Fairchild FLV100 LED  
Written by AnubisTTP on 2007-12-18  



The FLV-100 is an early light emitting diode which was designed to be used as a point light source for fiber-optic applications. Like many other early diodes, the FLV-100 uses a modified transistor package as the base of its construction. The leadframe and base are identical to a standard T-106 ceramic transistor; the only difference in the package is the use of a clear red epoxy on the upper surface. The FLV-100 die has a very unusual top contact structure, with an oval GaAsP emitter and complex contact shape. The amount of light emitted by the die is only a tiny improvement over the earlier Monsanto MV1, but it is more than adequate to be detected by Fairchild's companion FPT-100 phototransistor. However, with no diffusion and a narrow beam light output of only 500ucd, the FLV100 was nearly worthless as an indicator.


FLV100 at 30x magnification. Note the unusual shape of the top contact on the die.

Fairchild FLV 100 LED, normal operation.

Fairchild FLV LED family, from left to right; FLV102 LED, FLV101 LED, FLV100 LED indicator, FPT100 phototransistor.

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