The NE5500179A is an N-channel silicon power MOS FET specially designed as the transmission driver amplifier for 4.8 V GSM 1 800 and GSM 1 900 handsets. Dies are manufactured using NEC's NEWMOS technology (NEC's 0.6 m WSi gate lateral-diffusion MOS FET) and housed in a surface mount package. The device can deliver 30.0 dBm output power with 55% power added efficiency at 1.9 GHz under the 4.8 V supply voltage, or can deliver 27 dBm output power with 50% pozwer added efficiency at 3.5 V, respectively.