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    | Partname: | HMHAA280R2 |  
    | Description: | 4-Pin Half Pitch MFP AC Input Phototransistor Output Optocoupler |     
    | Manufacturer: | Fairchild Semiconductor |  
    | Package: | Half Pitch MFP |  
    | Pins: | 4 |  
    | Datasheet: | PDF (509K). Click here to download *) |  
    The HMHAA280 series consists of two gallium arsenide infrared emitting diodes, connected in inverse parallel, driving a single silicon phototransistor in a compact 4-pin mini-flat package. The lead pitch is 1.27mm.  |  
    
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    Click here to download HMHAA280R2 Datasheet*) | 
  
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