器件名称: H21A1
功能描述: PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
文件大小: 104.21KB 共5页
简 介:H21A1 / H21A2 / H21A3
PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH
PACKAGE DIMENSIONS
0.972 (24.7) 0.957 (24.3) 0.472 (12.0) 0.457 (11.6) C L 0.249 (6.35) 0.243 (6.15)
+ E D +
DESCRIPTION
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 mechanical resolution, coupling efficiency, ambient light
0.133 (3.4) 0.126 (3.2) (2X)
C L 0.39 (1.00) 0.34 (0.85)
0.755 (19.2) 0.745 (18.9)
.073 (1.85) .133 (3.38)
0.129 (3.3) 0.119 (3.0) Optical C L
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.
0.433 (11.0) 0.422 (10.7)
SCHEMATIC
1 4
0.125 (3.2) 0.119 (3.0) C L .295 (7.5) .272 (6.9)
0.315 (8.0)
FEATURES
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 CATHODE PIN 3 COLLECTOR PIN 4 EMITTER
0.020 (0.51) (SQ)
NOTES: 1. Dimensions for all drawings are in inches (mm). 2. Tolerance of ± .010 (.25) on all non-nominal dimensions unless otherwise specified.
ABSOLUTE MAXIMUM RATINGS
Parameter Operating Temperature Storage Temperature Soldering……
