H21A4 Fairchild Optoelectronics Group, H21A4 Datasheet

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H21A4

Manufacturer Part Number
H21A4
Description
SENSOR OPTO SLOT 3MM TRANS THRU
Manufacturer
Fairchild Optoelectronics Group
Type
Unamplifiedr
Datasheet

Specifications of H21A4

Sensing Distance
0.118" (3mm)
Sensing Method
Transmissive
Output Configuration
Phototransistor
Current - Dc Forward (if)
50mA
Current - Collector (ic) (max)
20mA
Voltage - Collector Emitter Breakdown (max)
55V
Response Time
8µs, 50µs
Mounting Type
Through Hole
Package / Case
PCB Mount
Operating Temperature
-55°C ~ 100°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
• Opaque housing
• Low cost
• .035” apertures
• High I
DS300291
DESCRIPTION
The H21A series are 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 efficiency, 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.
NOTES:
1. Dimensions for all drawings are in inches (mm).
2. Tolerance of ± .010 (.25) on all non-nominal dimensions
2001 Fairchild Semiconductor Corporation
unless otherwise specified.
0.249 (6.35)
0.243 (6.15)
0.125 (3.2)
0.119 (3.0)
0.103 (2.60) NOM
C(ON)
6/05/01
.295 (7.5)
.272 (6.9)
PACKAGE DIMENSIONS
0.972 (24.7)
0.957 (24.3)
2
1
0.755 (19.2)
0.745 (18.9)
0.472 (12.0)
0.457 (11.6)
+
E
C L
L C
D
+
3
4
0.129 (3.3)
0.119 (3.0)
0.020 (0.51) (SQ)
0.433 (11.0)
0.422 (10.7)
0.315 (8.0)
Ø 0.133 (3.4)
Ø 0.126 (3.2)
0.39 (1.00)
0.34 (0.85)
(2X)
PIN 1 ANODE
PIN 2 CATHODE
PIN 3 COLLECTOR
PIN 4 EMITTER
L C
0.110 (2.8)
0.091 (2.3)
OPTICAL INTERRUPTER SWITCH
Optical
1 OF 4
H21A4
C L
PHOTOTRANSISTOR
H21A5
2
1
SCHEMATIC
www.fairchildsemi.com
H21A6
4
3

Related parts for H21A4

H21A4 Summary of contents

Page 1

... FEATURES • Opaque housing • Low cost • .035” apertures • High I C(ON) 2001 Fairchild Semiconductor Corporation DS300291 6/05/01 OPTICAL INTERRUPTER SWITCH H21A4 Ø 0.133 (3.4) Ø 0.126 (3.2) (2X 0.39 (1.00) 0.34 (0.85) Optical C L 0.433 (11.0) 0.422 (10.7) ...

Page 2

... H21A4 2.0 — — H21A5 4.0 — — H21A6 1.9 — — H21A4 3.0 — — H21A5 5.5 — — H21A6 H21A5/6 — — 0.40 H21A4 — — 0.40 — 8 — All — 50 — All 6/05/01 Unit °C °C °C ° ...

Page 3

... PW = 100 s, PRR = 100 pps 1 0.8 0.6 -50 - AMBIENT TEMPERATURE ( C) A Figure 5. Switching Speed vs 300 s 3 PRR = 100 pps 7 AMPS NORMALIZED LOAD RESISTANCE ( ) L DS300291 6/05/01 OPTICAL INTERRUPTER SWITCH H21A4 NORMALIZED PULSED P = 100 sec W .4 PRR = 100 pps . 100 200 400 600 1000 1 3 ...

Page 4

... PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH H21A4 H21A5 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness ...

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