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        Semiconductor parts containing 251 
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KEMET 
| Part | Description |  
| T492D105J035CC4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105J035CH4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105J035DC4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105J035DS4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035BB4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035BC4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035BS4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035CB4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035CC4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035CH4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035DB4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035DC4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035DH4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105K035DS4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035BC4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035BH4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035CB4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035CC4251 | SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035CH4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035CS4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035DB4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D105M035DH4251 |  SOLID TANTALUM CHIP CAPACITORS |  
| T492D156J005BC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156J005CC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J010AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J010CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156J015BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J015CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156J020AC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156J020BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J025AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J025BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J035AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J035BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156J035CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156J050BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K005AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K005BC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156K005CC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K010AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K015AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K015BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K015CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156K020AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K020CC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K025AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K025BC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156K025CC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156K035AC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156K035BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M005AC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M005BC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M010AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M010BC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M010CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M015BC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M015CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M020AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M025AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M025CC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M035AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M035BC4251 | Established reliability options Symmetrical, compliant terminations |  
| T492D156M050AC4251 |  Established reliability options Symmetrical, compliant terminations |  
| T492D156M050BC4251 |  Established reliability options Symmetrical, compliant terminations |  
  
KNBRT 
| Part | Description |  
| L251ED | LED Lamps, Special Shape |  
| L251EW | LED Lamps, Special Shape |  
| L251GD | LED Lamps, Special Shape |  
| L251GDT | LED Lamps, Special Shape |  
| L251GW | LED Lamps, Special Shape |  
| L251HD | LED Lamps, Special Shape |  
| L251HW | LED Lamps, Special Shape |  
| L251RDT | LED Lamps, Special Shape |  
| L251YD | LED Lamps, Special Shape |  
| L251YW | LED Lamps, Special Shape |  
  
KODEN 
| Part | Description |  
| KK74AC251D |  8-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |  
| KK74ACT251 | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |  
| KK74ACT251D |  8-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |  
| KK74HC251A |  8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |  
| KK74HC251AN | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |  
  
Lambda Advanced Analog Inc. 
 
LANSD 
| Part | Description |  
| ML12511 | MECL PLL Components Dual Modulus Prescaler |  
| ML12513 |  MECL PLL Components Dual Modulus Prescaler |  
| ML7251E | Intergated Circuit, Semiconductor or Electronic Component description not yet available. View Datasheet. |  
| ML7251F | Intergated Circuit, Semiconductor or Electronic Component description not yet available. View Datasheet. |  
| ML8251E | Digital Decoder/Demultiplexer |  
| ML8251F | Digital Decoder/Demultiplexer |  
| SL8251E | Digital Decoder/Demultiplexer |  
| SL8251EB | Digital Decoder/Demultiplexer |  
| SL8251F | Digital Decoder/Demultiplexer |  
| SL8251FB | Digital Decoder/Demultiplexer |  
  
LEDTC 
 
LEDTH 
 
LEDTR 
 
LETEX 
| Part | Description |  
| LY251 | Photocoupler. Input continuous LED current 50 mA, input peak LED current 1000 mA, input LED reverse voltage 6 V. Off-state output terminal voltage 600 V, output peak repetitive surge current 1 A, output peak load current 0.6 A. |  
  
LG 
 
LIFUS 
| Part | Description |  
| 153.2512 | BF-Inline Fuses for rated voltage up to 32 V |  
| 155.0892.6251 |  CF8-Fuse links for rated voltage up to 58 V |  
| 157.5700.6251 | Fuse strips for batterie-powered vehicles for rated voltage up to 80 V |  
| 157.5701.6251 | Fuse strips with housing for batterie- powered vehicles for rated voltage up to 80 V |  
| 225100 |  2AG Fast-Acting Fuse |  
| 225100P |  Axial Lead and Cartridge Fuses |  
| 225125 |  2AG Fast-Acting Fuse |  
| 3251.25 |  Axial Lead and Cartridge Fuses - Ceramic Body |  
| LH25100-3 |  Class H/K5 and R Fuse Blocks |  
| LH25100-PC | Fuse Blocks, Holders and Accessories |  
| LR25100-1 |  Class H/K5 and R Fuse Blocks |  
| LR25100-2 |  Class H/K5 and R Fuse Blocks |  
| R251003 | Axial Lead and Cartridge Fuses - Subminiature |  
| R251004 | Axial Lead and Cartridge Fuses - Subminiature |  
| R251005 | Axial Lead and Cartridge Fuses - Subminiature |  
| R251007 |  Axial Lead and Cartridge Fuses - Subminiature |  
| R251010 |  Axial Lead and Cartridge Fuses - Subminiature |  
| R251012 | Axial Lead and Cartridge Fuses - Subminiature |  
| R25101.5 |  Axial Lead and Cartridge Fuses - Subminiature |  
| R25103.5 |  Axial Lead and Cartridge Fuses - Subminiature |  
| R251.062 | Axial Lead and Cartridge Fuses - Subminiature |  
| R251.250 |  Axial Lead and Cartridge Fuses - Subminiature |  
| R251.375 |  Axial Lead and Cartridge Fuses - Subminiature |  
| R251.500 | Axial Lead and Cartridge Fuses - Subminiature |  
| R251.750 |  Axial Lead and Cartridge Fuses - Subminiature |  
| TMOV34S251M |  Varistor Products - High Energy Industrial Thermally Protected |  
| V251BA60 |  Varistor Products - High Energy Industrial |  
| V251CA60 |  Varistor Products - High Energy Industrial Disc |  
| V251DA40 | Varistor Products - High Energy Industrial |  
| V251DB40 |  Varistor Products - High Energy Industrial |  
| V251DHB34 |  Varistor Products - High Energy Industrial |  
  
LIGTK 
 
Linear Technology 
| Part | Description |  
| LT1251 | 40MHz Video Fader and  DC Gain Controlled Amplifier |  
| LT1251CN | 40MHz Video Fader and DC Gain Controlled Amplifier |  
| LT1251CS | 40MHz Video Fader and DC Gain Controlled Amplifier |  
| LTC2251 | 10-Bit, 125/105Msps Low Noise 3V ADCs |  
| LTC2251CUH | 10-Bit, 125/105Msps Low Noise 3V ADCs |  
| LTC2251IUH | 10-Bit, 125/105Msps Low Noise 3V ADCs |  
| LTC3251-1.2 | 500mA High Efficiency, Low Noise, Inductorless Step-Down DC/DC Converter |  
| LTC3251 |  500mA High Efficiency, Low Noise, Inductorless Step-Down DC/DC Converter |  
| LTC3251EMSE-1.2 | 500mA high efficiency, low noise, inductorless step-down DC/DC converter. |  
| LTC3251EMSE-1.5 | 500mA high efficiency, low noise, inductorless step-down DC/DC converter. |  
| LTC3251EMSE | 500mA high efficiency, low noise, inductorless step-down DC/DC converter. |  
| LTC4251-1CS6 |  Negative Voltage Hot Swap Controllers in SOT-23 |  
| LTC4251-1IS6 |  Negative Voltage Hot Swap Controllers in SOT-23 |  
| LTC4251-2CS6 | Negative Voltage Hot Swap Controllers in SOT-23 |  
| LTC4251-2IS6 |  Negative Voltage Hot Swap Controllers in SOT-23 |  
| LTC4251 | Negative 48V Hot Swap Controller |  
| LTC4251CS6 | Negative Voltage Hot Swap Controllers in SOT-23 |  
| LTC4251IS6 |  Negative Voltage Hot Swap Controllers in SOT-23 |  
  
LITON 
| Part | Description |  
| 1N5251B | 22V, 500mWt General purpose voltage reference/regulator diode |  
| DL5251B | 22V, 500mWt General purpose voltage reference/regulator diode |  
| GBJ2510 | 1000V, 25A glass passivated bridge rectifier |  
| GBPC2510 | 1000V, 25A glass passivated bridge rectifier |  
| GBPC2510W | 1000V, 25A glass passivated bridge rectifier |  
| HSDL-4251 |  High-Performance T-1 ?? (5mm) AlGaAs Infrared (870nm) Lamp |  
| KBPC2510G | 1000V, 25A glass passivated bridge rectifier |  
| KBPC2510GW | 1000V, 25A glass passivated bridge rectifier |  
| LTL2251A | LED Lamps, Special Shape |  
| LTL2251AL | LED Lamps, Special Shape |  
| LTL23251AL | LED Lamps, Special Shape |  
| LTL251 | General purpose yellow dome-style LED |  
| LTL3251A | LED Lamps, Special Shape |  
| LTL33251A | LED Lamps, Special Shape |  
| LTL33251AA | LED Lamps, Special Shape |  
| LTL4251 | General purpose yellow dome-style LED |  
| LTL4251N | General purpose yellow dome-style LED |  
| LTL4251R1 | General purpose yellow dome-style LED |  
| LTL4251R2 | General purpose yellow dome-style LED |  
| LTP251FFA | 2.5 16x16 MULTICOLOR DOT MATRIX DISPLAY |  
| MBRB2515L | 15V, 25A schottky barrier rectifier |  
| MP251W | Standard Recovery Bridge Rectifier |  
| RA2510 | 25A Iout, 1kV Vrrm General Purpose Silicon Rectifier |  
| RA251 | 25A Iout, 100V Vrrm General Purpose Silicon Rectifier |  
| RL251 | 2.5A Iout, 50V Vrrm General Purpose Silicon Rectifier |  
  
LORAL 
| Part | Description |  
| GC2510-00 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-15 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-20 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-25 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-30 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-35 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-36 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-42 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2510-55 | 15V Vrrm, 300fF Capacitance Varactor Diode |  
| GC2511-00 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-15 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-20 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-25 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-30 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-35 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-36 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-42 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2511-55 | 15V Vrrm, 500fF Capacitance Varactor Diode |  
| GC2512-00 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-15 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-20 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-25 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-30 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-35 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-36 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-42 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2512-55 | 15V Vrrm, 700fF Capacitance Varactor Diode |  
| GC2513-00 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-15 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-20 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-25 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-30 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-35 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-36 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-42 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2513-55 | 15V Vrrm, 900fF Capacitance Varactor Diode |  
| GC2514-00 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-15 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-20 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-25 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-30 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-35 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-36 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-42 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2514-55 | 15V Vrrm, 1.2pF Capacitance Varactor Diode |  
| GC2515-00 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-15 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-20 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-25 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-30 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-35 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-36 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-42 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2515-55 | 15V Vrrm, 1.7pF Capacitance Varactor Diode |  
| GC2516-00 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-15 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-20 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-25 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-30 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-35 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-36 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-42 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
| GC2516-55 | 15V Vrrm, 2.5pF Capacitance Varactor Diode |  
  
LORAS 
| Part | Description |  
| MCR22510FP | 800V V[drm] Max., 25A I[T] Max. Silicon Controlled Rectifier |  
| T2512BH | Triac |  
  
LRC 
| Part | Description |  
| 1N5251A | 22 V,  5.6 mA, zener diode |  
| 1N5251B | 22 V, 5.6 mA, zener diode |  
| 1N5251C | 22 V, 5.6 mA, zener diode |  
| 1N5251D | 22 V, 5.6 mA, zener diode |  
| FR251 | 50 V, 2.5 A, fast recovery diode |  
| MMBZ5251BLT1 | 22 V, 5.6 mA, 225 mW, semiconductor |  
| RL251 | 50 V, 2.5 A general diode |  
  
LUMIX 
| Part | Description |  
| CLS-RC11A125191R |  ILLUMINATED ROCKER SWITCH |  
| CLS-RC11A125191Y | ILLUMINATED ROCKER SWITCH |  
| CLS-RO11A12251B |  ILLUMINATED OVAL ROCKER SWITCH |  
| CLS-RO11A12251R |  ILLUMINATED OVAL ROCKER SWITCH |  
| CLS-RO11A12251Y |  ILLUMINATED OVAL ROCKER SWITCH |  
| CLS-RR11A12251B | BLUE LED, ILLUMINATED, RECTANGULAR ROCKER SWITCH |  
| CLS-RR11A12251G |  GREEN LED, ILLUMINATED, RECTANGULAR ROCKER SWITCH |  
| CLS-RR11A12251R | RED LED, ILLUMINATED, RECTANGULAR ROCKER SWITCH |  
| CLS-RR11A12251Y | YELLOW LED, ILLUMINATED, RECTANGULAR ROCKER SWITCH |  
| CLS-TC11A12251B | BLUE LED ILLUMINATED TOGGLE SWITCH |  
| CLS-TC11A12251R | RED LED ILLUMINATED TOGGLE SWITCH |  
| CLS-TC11A12251Y | YELLOW LED ILLUMINATED TOGGLE SWITCH |  
| LPF-R061251S |  6 UNIT LIGHTPIPE |  
| LPF-R251321S |  3mm x 2mm RECTANGULAR, 25 UNIT, SMT LIGHT PIPE WITH ANTIBLEED HOLDER |  
  
LUMNT 
| Part | Description |  
| XPD-MR-D1251CDA |  10 Gbps 120km DWDM Multirate XFP Transceiver Preliminary |  
  
M/A-COM 
| Part | Description |  
| 1825190-1 | SHUNT, DIP, PROGRAMMABLE |  
| 1825190-2 |  SHUNT, DIP, PROGRAMMABLE |  
| 1825190-5 |  SHUNT, DIP, PROGRAMMABLE |  
| 1825190-6 | SHUNT, DIP, PROGRAMMABLE |  
| 1825190-7 |  SHUNT, DIP, PROGRAMMABLE |  
| 1825190-8 | SHUNT, DIP, PROGRAMMABLE |  
| 251X |  WILMAR??? Protective Relays - 250 Series, Over/Undervoltage |  
| 3SBC5251A1 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251A2 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251A5 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251A6 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251B1 | 150 Grid-space Micro-miniature Relays |  
| 3SBC5251B2 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251B6 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251D1 | 150 Grid-space Micro-miniature Relays |  
| 3SBC5251D5 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251D6 |  150 Grid-space Micro-miniature Relays |  
| 3SBC5251E1 | 150 Grid-space Micro-miniature Relays |  
| 3SBC5251E6 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251A2 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251A5 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251A6 | 150 Grid-space Micro-miniature Relays |  
| 3SBC6251B1 | 150 Grid-space Micro-miniature Relays |  
| 3SBC6251B5 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251D2 | 150 Grid-space Micro-miniature Relays |  
| 3SBC6251D5 | 150 Grid-space Micro-miniature Relays |  
| 3SBC6251D6 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251E1 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251E2 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251E5 |  150 Grid-space Micro-miniature Relays |  
| 3SBC6251E6 | 150 Grid-space Micro-miniature Relays |  
| 3SCC5251A1 |  150 Grid-space Micro-miniature Relays |  
| 3SCC5251A5 | 150 Grid-space Micro-miniature Relays |  
| 3SCC5251A6 |  150 Grid-space Micro-miniature Relays |  
| 3SCC5251B2 |  150 Grid-space Micro-miniature Relays |  
| 3SCC5251B6 |  150 Grid-space Micro-miniature Relays |  
| 3SCC5251D2 | 150 Grid-space Micro-miniature Relays |  
| 3SCC5251D5 | 150 Grid-space Micro-miniature Relays |  
| 3SCC5251D6 |  150 Grid-space Micro-miniature Relays |  
| 3SCC5251E5 | 150 Grid-space Micro-miniature Relays |  
| 3SCC5251E6 |  150 Grid-space Micro-miniature Relays |  
| 3SCC6251A1 |  150 Grid-space Micro-miniature Relays |  
| 3SCC6251A2 | 150 Grid-space Micro-miniature Relays |  
| 3SCC6251A6 | 150 Grid-space Micro-miniature Relays |  
| 3SCC6251B1 | 150 Grid-space Micro-miniature Relays |  
| 3SCC6251B5 |  150 Grid-space Micro-miniature Relays |  
| 3SCC6251D2 | 150 Grid-space Micro-miniature Relays |  
| 3SCC6251D5 |  150 Grid-space Micro-miniature Relays |  
| 3SCC6251D6 | 150 Grid-space Micro-miniature Relays |  
| 3SCC6251E1 |  150 Grid-space Micro-miniature Relays |  
| 3SCC6251E5 |  150 Grid-space Micro-miniature Relays |  
| 3SCC6251E6 |  150 Grid-space Micro-miniature Relays |  
| C2516 |  Centillium ADSL IC, Central Office applications Meets requrements of IEC60950 for supplementary insulation, 250V working voltage |  
| GTCA28-251L-P05 | Gas Discharge Tube Standard Two Electrode Series |  
| GTCA28-251M-P15 |  Gas Discharge Tube High Surge Two Electrode Series |  
| GTCA28-251M-P15-FS |  Gas Discharge Tube High Surge Two Electrode Series |  
| GTCA28-251M-P15-FS-B |  Gas Discharge Tube High Surge Two Electrode Series |  
| GTCN28-251L-P05 |  Gas Discharge Tube Standard Two Electrode Series |  
| GTCN28-251L-P05-B | Gas Discharge Tube Standard Two Electrode Series |  
| GTCN28-251M-P15-FS |  Gas Discharge Tube High Surge Two Electrode Series |  
| GTCR37-251M-P10 |  Gas Discharge Tube Three Electrode 7.5mm Diameter |  
| GTCR37-251M-P10-FS | Gas Discharge Tube Three Electrode 7.5mm Diameter |  
| GTCT37-251M-P10 | Gas Discharge Tube Three Electrode 7.5mm Diameter |  
| GTCX28-251M-R05 |  Gas Discharge Tubes |  
| MA40251 | 10 GHz, Schottky detector diode |  
| MA45251-108 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA45251-131 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA45251-132 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA45251-30 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA45251-31 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA45251-94 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA45251-96 | 45V Vrrm, 1.8pF Capacitance Varactor Diode |  
| MA4E2513-1289 |  SURMOUNT Low Barrier Tee ???0301??? Footprint Silicon Schottky Diodes |  
| MA4E2513 | SURMOUNT Low Barrier Tee ???0301??? Footprint Silicon Schottky Diodes |  
| MA4E2513L-1289 | SURMOUNT Low Barrier Series Tee Si Schottky Diode |  
| MA4E2513L-1289T |  SURMOUNT Low Barrier Tee ???0301??? Footprint Silicon Schottky Diodes |  
| MA4E2514 |  SURMOUNT Low and Medium Barrier Silicon Schottky Diodes: Tee Pair |  
| MA4E2514L-1116 | SURMOUNT Low Barrier Series Tee Si Schottky Diode |  
| MA4E2514L-1116W | SURMOUNT Low and Medium Barrier Silicon Schottky Diodes: Tee Pair |  
| MA4E2514L |  SURMOUNT Low and Medium Barrier Silicon Schottky Diodes: Tee Pair |  
| MA4E2514M-1116 | SURMOUNT Medium Barrier Series Tee Si Schottky Diode |  
| MA4E2514M-1116W |  SURMOUNT Low and Medium Barrier Silicon Schottky Diodes: Tee Pair |  
| MA4E2514M | SURMOUNT Low and Medium Barrier Silicon Schottky Diodes: Tee Pair |  
  
MARCN 
 
MARL 
| Part | Description |  
| PCH1251BA | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BA2L | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BA5V | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BG | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BG2L | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BG5V | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BR | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BR2L | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251BR5V | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251MA | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251MG | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
| PCH1251MR | LED Lamps, Panel Mnt/PC Mnt/Stackable |  
  
MASOY 
| Part | Description |  
| MAS9251ACAF-T | Regulated charge pump DC/DC converter. Fixed 5V output. |  
| MAS9251ASMF-T | Regulated charge pump DC/DC converter. Fixed 5V output. |  
| MAS9251ASMS-T | Regulated charge pump DC/DC converter. Adjustable output. |  
  
MASTR 
| Part | Description |  
| AP2510 | 25A Iout, 1.0kV Vrrm General Purpose Silicon Rectifier |  
| AP251 | 25A Iout, 100V Vrrm General Purpose Silicon Rectifier |  
| FR251 | 2.5A Iout, 50V Vrrm Fast Recovery Rectifier |  
| HER251 | 2.5A Iout, 50V Vrrm General Purpose Silicon Rectifier |  
| KBPC251W | Standard Recovery Bridge Rectifier |  
| RA2510 | 25A Iout, 1kV Vrrm General Purpose Silicon Rectifier |  
| RA251 | 25A Iout, 100V Vrrm General Purpose Silicon Rectifier |  
| RL251 | 2.5A Iout, 50V Vrrm General Purpose Silicon Rectifier |  
  
Maxim Integrated Products 
| Part | Description |  
| DS1251W-120+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251W-120 | 4096K NV SRAM with Phantom Clock |  
| DS1251W-120IND+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251W-120IND | 4096K NV SRAM with Phantom Clock |  
| DS1251WP-120+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251WP-120 | 4096K NV SRAM with Phantom Clock |  
| DS1251WP-120IND+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251WP-120IND | 4096K NV SRAM with Phantom Clock |  
| DS1251Y-70+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251Y-70 | 4096K NV SRAM with Phantom Clock |  
| DS1251YP-70+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251YP-70 | 4096K NV SRAM with Phantom Clock |  
| DS1251YP-70IND+ | 4096K NV SRAM with Phantom Clock. Lead-free |  
| DS1251YP-70IND | 4096K NV SRAM with Phantom Clock |  
| DS3251 | Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs |  
| DS3251+ | Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs. Lead-free |  
| DS32512 |  6-/8-/12-Port DS3/E3/STS-1 LIU |  
| DS32512N | 6-/8-/12-Port DS3/E3/STS-1 LIU |  
| DS3251N | Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs |  
| MAX2251_1 |  Evaluation Kit |  
| MAX2251 |  +2.8V, Single-Supply, Cellular-Band Linear Power Amplifier |  
| MAX2251EBE | +2.8V, Single-Supply, Cellular-Band Linear Power Amplifier |  
| MAX2251EBE-T | +2.8V, Single-Supply, Cellular-Band Linear Power Amplifier |  
| MAX2251EVKIT |  Evaluation Kit |  
| MAX2510 | Low-Voltage IF Transceiver with Limiter/RSSI and Quadrature Modulator |  
| MAX2510EEI+ | Low-Voltage IF Transceiver with Limiter RSSI and Quadrature Modulator. Lead-free |  
| MAX2510EEI | Low-voltage IF transceiver with limiter/RSSI and quadrature modulator. |  
| MAX2510EEI+T | Low-Voltage IF Transceiver with Limiter RSSI and Quadrature Modulator. Lead-free |  
| MAX2510EEI-T | Low-Voltage IF Transceiver with Limiter RSSI and Quadrature Modulator |  
| MAX2510EVKIT-SO | Evaluation Kit |  
| MAX2511_1 |  Evaluation Kit |  
| MAX2511 | Complete, +5V-Powered, Isolated, Dual RS-232 Transceiver Module |  
| MAX2511EEI+ | Low-Voltage IF Transceiver with Limiter and RSSI. Lead-free |  
| MAX2511EEI | Low-voltage IF transceiver with limiter and RSSI. |  
| MAX2511EEI+T | Low-Voltage IF Transceiver with Limiter and RSSI. Lead-free |  
| MAX2511EEI-T | Low-Voltage IF Transceiver with Limiter and RSSI |  
| MAX2511EVKIT-SO | Evaluation Kit |  
| MAX251 | +5V Powered Isolated RS-232 Drivers/Receivers |  
| MAX251C/D | +5V powered isolated RS-232 driver/receiver. |  
| MAX251CPD+ | 5V, Isolated, RS-232 Driver Receiver. Lead-free |  
| MAX251CPD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251CSD+ | 5V, Isolated, RS-232 Driver Receiver. Lead-free |  
| MAX251CSD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251CSD+T | 5V, Isolated, RS-232 Driver Receiver. Lead-free |  
| MAX251CSD-T | 5V, Isolated, RS-232 Driver Receiver |  
| MAX251EJD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251EPD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251ESD+ | 5V, Isolated, RS-232 Driver Receiver. Lead-free |  
| MAX251ESD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251ESD+T | 5V, Isolated, RS-232 Driver Receiver. Lead-free |  
| MAX251ESD-T | 5V, Isolated, RS-232 Driver Receiver |  
| MAX251MJD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251MLD | +5V powered isolated RS-232 driver/receiver. |  
| MAX251MLP | +5V Powered Isolated RS-232 Drivers/Receivers |  
| MAX4251 | SOT23, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |  
| MAX4251ESA+ | UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps. Lead-free |  
| MAX4251ESA | Single, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 3MHz, min stable gain 1V/V, with shutdown. |  
| MAX4251ESA+T | UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps. Lead-free |  
| MAX4251ESA-T | UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |  
| MAX4251EUA+ | UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps. Lead-free |  
| MAX4251EUA | Single, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 3MHz, min stable gain 1V/V, with shutdown. |  
| MAX4251EUA+T | UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps. Lead-free |  
| MAX4251EUA-T | UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |  
| MAX5251 | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |  
| MAX5251ACAP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251ACAP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1/2. |  
| MAX5251ACAP+T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251ACAP-T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |  
| MAX5251ACPP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251ACPP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1/2. |  
| MAX5251AEAP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251AEAP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1/2. |  
| MAX5251AEAP+T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251AEAP-T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |  
| MAX5251AEPP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251AEPP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1/2. |  
| MAX5251BCAP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251BCAP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1. |  
| MAX5251BCAP+T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251BCAP-T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |  
| MAX5251BCPP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251BCPP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1. |  
| MAX5251BEAP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251BEAP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1. |  
| MAX5251BEAP+T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251BEAP-T | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface |  
| MAX5251BEPP+ | +3V, Quad, 10-Bit Voltage-Output DAC with Serial Interface. Lead-free |  
| MAX5251BEPP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-1. |  
| MAX5251BMJP | +3V, quad, 10-bit, voltage-output DAC with serial interface. INL(LSB) +-2. |  
  
MCC 
| Part | Description |  
| 1N5251 | Pd=500mW, Vz=22V zener diode |  
| 1N5251-AP | 500 mW Zener Diode 2.4 to 75 Volts |  
| 1N5251-TP |  500 mW Zener Diode 2.4 to 75 Volts |  
| DL5251 | Pd=500mW, Vz=22V zener diode |  
| DR251 |  25 Amp Automotive Rectifier 100 to 600 Volts |  
| GBJ2510 | 25A, 1000V ultra fast recovery rectifier |  
| GBJ2510-BP |  25 Amp Glass Passivated Bridge Rectifier 50 to 1000 Volts |  
| KBPC2510GS | 25A, 1000V ultra fast recovery rectifier |  
| KBPC2510S | 25A, 1000V ultra fast recovery rectifier |  
| MB2510 | 25A, 1000V ultra fast recovery rectifier |  
| MB251 | 25A, 100V ultra fast recovery rectifier |  
| MB251D | 25A, 110V ultra fast recovery rectifier |  
| MB251DL | 25A, 110V ultra fast recovery rectifier |  
| MB251W-BP | 25 Amp Single Phase Bridge Rectifier 50 to 1000 Volts |  
| MBR25100 | 25A, 100V ultra fast recovery rectifier |  
| MBRB25100 | 25A, 100V ultra fast recovery rectifier |  
| MBRB25100CT | 25A, 100V ultra fast recovery rectifier |  
| MBRF25100CT | 25A, 100V ultra fast recovery rectifier |  
| MBRX025100 | 0.25A, 100V ultra fast recovery rectifier |  
| MLESD08A-2510 | Multilayer Polymer ESD Suppressor |  
| MLESD08A-2510-TP | Multilayer Polymer ESD Suppressor |  
| MMBZ5251B | Pd=410mW, Vz=22V zener diode |  
| MMSZ5251B | Pd=500mW, Vz=22V zener diode |  
| MMSZ5251-TP |  500 mW Zener Diodes 2.4 to 39 Volts |  
| MMXZ5251B | Pd=200mW, Vz=22V zener diode |  
| MP2510 | 25A, 1000V ultra fast recovery rectifier |  
| MP251 | 25A, 100V ultra fast recovery rectifier |  
| PF251 | 25A, 50V ultra fast recovery rectifier |  
| RA251 | 25.0A, 50V ultra fast recovery rectifier |  
| RL251 | 2.5A, 50V ultra fast recovery rectifier |  
| RL251GP | 2.5A, 50V ultra fast recovery rectifier |  
| SRA251 | 25A, 50V ultra fast recovery rectifier |  
  
Microchip Technology, Inc. 
| Part | Description |  
| MCP2510_07 |  Stand-Alone CAN Controller with SPI??? Interface |  
| MCP2510 | Stand-Alone CAN Controller with SPI Interface |  
| MCP2510-EP | Stand-Alone CAN Controller with SPI Interface |  
| MCP2510-ESO | Stand-Alone CAN Controller with SPI Interface |  
| MCP2510-EST | Stand-Alone CAN Controller with SPI Interface |  
| MCP2510-I/P | Bits number of 8 Microprocessor/controller features V2.0 spec, 1Mb/s bit rate, Serial Interface, Low Power Frequency clock 5 MHz Stand Alone Full CAN Controller P |  
| MCP2510-IP | Stand-Alone CAN Controller with SPI Interface |  
| MCP2510-I/SO | Bits number of 8 Microprocessor/controller features V2.0 spec, 1Mb/s bit rate, Serial Interface, Low Power Frequency clock 5 MHz Stand Alone F |  
| MCP2510-ISO | Stand-Alone CAN Controller with SPI Interface |  
| MCP2510-I/ST | Bits number of 8 Microprocessor/controller features V2.0 spec, 1Mb/s bit rate, Serial Interface, Low Power Frequency clock 5 MHz Stand Alone Full CAN Controller |  
| MCP2510-IST | Stand-Alone CAN Controller with SPI Interface |  
| MCP4251T |  7/8-Bit Single/Dual SPI Digital POT with Volatile Memory |  
| PIC18F2510 |  28/40/44-PIN FLASH MICROCONTROLLERS WITH 10-BIT A/D AND NANO WATT TECHNOLOGY |  
| PIC18F2515 |  28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology |  
| PIC18LF2510 | 28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology |  
| PIC18LF2510T |  28/40/44-PIN FLASH MICROCONTROLLERS WITH 10-BIT A/D AND NANO WATT TECHNOLOGY |  
| PIC18LF2515 | 28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology |  
  
MCNIX 
| Part | Description |  
| MX86251 | 3D graphic chipset |  
  
MELEX 
| Part | Description |  
| MLX90251 |  Programmable Linear Hall Effect Sensor |  
| MLX90251LVA-2 |  Programmable Linear Hall Effect Sensor |  
  
ME 
| Part | Description |  
| MG251A | 0.5' dual digit numeric display |  
| MG251C | 0.5' dual digit numeric display |  
| MO251A | 0.5' dual digit numeric display |  
| MO251C | 0.5' dual digit numeric display |  
| MS251A | 0.5' dual digit numeric display |  
| MS251C | 0.5' dual digit numeric display |  
| MY251A | 0.5 DUAL DIGIT NUMERIC DISPLAYS |  
| MY251C | 0.5 DUAL DIGIT NUMERIC DISPLAYS |  
  
Micrel 
| Part | Description |  
| 6251B |  IttyBitty??? GainBlock??? Amplifiers Preliminary Information |  
| MIC2514 | IttyBitty?? Integrated High-Side Switch Preliminary Information |  
| MIC2514BM5 | IttyBitty Integrated High-Side Switch |  
| MIC2514YM5 | IttyBitty Integrated High-Side Switch |  
| MIC6251 | IttyBitty?? GainBlock?? Amplifiers Preliminary Information |  
| MIC6251BM5 | IttyBitty GainBlock Amplifiers |  
  
Mitsubishi Electric Corp. 
| Part | Description |  
| M37273MF-251SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER???????? |  
| M38251E1DFP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1DFS | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1DGP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1DHP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1-FP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1-FS | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1-GP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1-HP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1MFP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1MFS | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1MGP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E1MHP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E2DFP | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
| M38251E2DFS | RAM size: 256 bytes; single-chip 8-bit CMOS microcomputer |  
 
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