H21A1 - PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH

Product Overview

Fairchild Semiconductor

Part number	H21A1
Manufacturer	Fairchild Semiconductor
File Size	104.21 KB
Description	PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
Datasheet	H21A1 Datasheet
Additional preview pages of the H21A1 datasheet.

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 |