H21A1 Datasheet and Specifications PDF

The H21A1, H21A2 and H21A3 consist of a gallium arsenide infrared emitting diode coupled with a silicon phototransistor in a plastic housing. The packaging system is designed to optimize the mechanica.

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..

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The H21Ax and H22Ax series of opaque photointerrupters are single channel switches consisting of a Gallium Arsenide infrared emitting diode and a NPN silicon photo transistor mounted in a polycarbonat.

* High Gain
* 3mm Gap between LED and Detector
* Polycarbonate Case Protection against Ambient Light
* Pb Free and RoHS Compliant
* Safety Approvals Pending APPLICATIONS
* Copiers, Printers, Facsimiles
* Record Players, Casette Decks
* Optoelectronic Switches Top .