H21A3 - PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH

Fairchild Semiconductor

Datasheet Details

Part number	H21A3
Manufacturer	Fairchild ↗ Semiconductor
File Size	104.21 KB
Description	PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
Datasheet	H21A3_FairchildSemiconductor.pdf

The H21A1, H21A2 and H21A3 consist of a gallium arsenide infrared emitting diode coupled with a silicon phototransistor in a plastic housing.

0.110 (2.8) 0.091 (2.3).
Opaque housing.
Low cost.
.035” apertures.
High IC(ON) 1. Derate power dissipation linearly 1.33 mW/°C above 25°C. 2. RMA flux is recommended. 3. Methanol or isopropyl alcohols are recommended as cleaning agents. 4. Soldering iron tip 1/16” (1.6mm) minimum from housing. 2 3 2 1 3 4 PIN 1 ANODE PIN 2.

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Published: Mar 22, 2005 |