Product Bulletin OPB821TX
September 1996
Hi-Rel Slotted Optical Switches
Types OPB821TX, OPB821TXV
24.0 (609.60)
#24 AWG
Features
•
Non-contact switching
•
Hermetically sealed components
•
Components processed to Optek’
s
screening program patterned after
MIL-PRF-19500 for TX and TXV
devices
Absolute Maximum Ratings
(T
A
= 25
o
C unless otherwise noted)
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65
o
C to +125
o
C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65
o
C to +150
o
C
Input Diode
Forward DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW
(1)
Output Phototransistor
Collector-Emitter Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
Emitter-Collector Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW
(1)
Notes:
(1) Derate Linearly 1.00 mW/
o
C above 25
o
C.
(2) Methanol or isopropanol are recommended cleaning agents.
Description
The OPB821TX or OPB821TXV consists
of a gallium aluminum arsenide LED and
a silicon phototransistor soldered into a
printed circuit board, then mounted in a
high temperature plastic housing on
opposite sides of an 0.080 inch (2.03
mm) wide slot. Lead wires are #24 AWG
polytetraflouroethylene (PTFE) insulated
conforming to MIL-W-16878.
Phototransistor switching takes place
whenever an opaque object passes
through the slot. For maximum output
signal, neither the LED or the
phototransistor in the OPB821TX or the
OPB821TXV is apertured.
The OPB821TX and OPB821TXV use
optoelectronic components that have
been processed and tested as either TX
or TXV components per MIL-PRF-19500.
Typical screening and lot acceptance
tests are provided on page 13-4.
Optek Technology, Inc.
1215 W. Crosby Road
Carrollton, Texas 75006
13-38
(972) 323-2200
Fax (972) 323-2396
OPTEK [ OPTEK TECHNOLOGIES ]
