H21B3
H21B3 Datasheet
H21B1
| Part | Datasheet |
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H21B3 |
H21B3 (pdf) |
| Related Parts | Information |
|---|---|
H21B1 |
H21B1 |
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H21B2 |
H21B2 |
| PDF Datasheet Preview |
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| PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH H21B1 PACKAGE DIMENSIONS Ø Ø Optical CL PIN 1 ANODE PIN 2 CATHODE PIN 3 COLLECTOR PIN 4 EMITTER NOTES Dimensions for all drawings are in inches mm . Tolerance of ± on all non-nominal dimensions unless otherwise H21B2 H21B3 SCHEMATIC The H21B1, H21B2 and H21B3 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington in a plastic housing. The packaging system is designed to optimize the mechanical resolution, coupling ambient light rejection, cost and reliability. The gap in the housing provides a means of interrupting the signal with an opaque material, switching the output from an “ON” to an “OFF” state. • Opaque housing • Low cost • apertures • High IC ON 2002 Fairchild Semiconductor Corporation Page 1 of 6 6/13/02 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH H21B1 H21B2 H21B3 ABSOLUTE MAXIMUM RATINGS TA = 25°C unless otherwise Parameter Rating Unit TOPR -55 to +100 TSTG -55 to +100 TSOL-I 240 for 5 sec TSOL-F 260 for 10 sec VCEO VECO NOTES Derate power dissipation linearly mW/°C above 25°C. RMA is recommended. Methanol or isopropyl alcohols are recommended as cleaning agents. Soldering iron 1/16" mm minimum from housing. 2002 Fairchild Semiconductor Corporation Page 2 of 6 6/13/02 PHOTODARLINGTON OPTICAL INTERRUPTER SWITCH H21B1 H21B2 |
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