Part Number	OP231
Description	GaAlAs Hermetic Infrared Emitting Diode
Info	.
Manufacture	OPTEK Technologies
for PC	Download OP231 Datasheet

Part Number	OP231W
Description	Hermetic Infrared Emitting Diode
Info	Hermetic Infrared Emitting Diode OP230 Series Obso.
Manufacture	TT electronics
for PC	Download OP231W Datasheet