Product Summary

The H21A1 is a slotted optical switch. The H21A1 slotted optical switch is a gallium arsenide light emitting diode coupled to a silicon photo transistor in a plastic housing. The packaging system of the H21A1 is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. The gap of the H21A1 in the housing provides a means of interrupting the signal with an opaque material, switching the output from an ON to an OFF state.

Parametrics

H21A1 absolute maximum ratings: (1)Storage temperature: -55 to +100℃; (2)Operating temperature: -55 to +100℃; (3)Soldering lead temperature: 240℃ for 5sec; (4)Soldering lead temperature: 260℃ for 10sec; (5)Continuous forward current: 60mA; (6)Reverse voltage: 6.0V; (7)Power dissipation: 100m.

Features

H21A1 features: (1)Opaque housing; (2)Low cost; (3).035apertures; (4)High Uc on.

Diagrams

H21A1 circuit diagram

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