Product Summary

The H21A1 is a phototransistor. It consists of a gallium arsenide infrared emitting diode coupled with a silicon phototransistor in a plastic housing. The packaging system is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability.

Parametrics

Absolute maximum ratings: (1)Operating Temperature, TOPR: -55 to +100℃; (2)Storage Temperature, TSTG: -55 to +100℃; (3)Soldering Temperature (Iron), TSOL-I: 240 for 5 sec℃; (4)Soldering Temperature (Flow), TSOL-F: 260 for 10 sec℃.

Features

Features: (1)Opaque housing; (2)Low cost; (3)High IC(ON).

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
H21A1
H21A1

Fairchild Semiconductor

Optical Switches, Transmissive, with Phototransistor Output INTERUP MOD TRANS

Data Sheet

Negotiable 
H21A1_Q
H21A1_Q

Fairchild Semiconductor

Optical Switches, Transmissive, with Phototransistor Output INTERUP MOD TRANS

Data Sheet

Negotiable