STS-8831
Dual Channel Optical Switch Assembly
Over / Under Optical Axis
Features
•
Non contact switching
•
Four wires for electrical connection
•
Fast switching speed
Description
The STS-8831 consists of a pair of infrared emitting
diodes and a pair of NPN phototransistors mounted on
opposite sides of a 5.1 mm. wide slot. Phototransistor
switching takes place whenever an opaque object
passes through the slot. The Phototransistors have a
0.5x1.5 mm internal aperture for increased resolution.
The polysulfone housing (Note 1) reduces interference
from ambient light and provides dirt and dust
protection. 340 mm length wires may be terminated
with an IDC connector upon special order.
Absolute Maximum Ratings
Operating & Storage Temp.
Input Diode Pair
Reverse Voltage
Average Forward Current
Peak Forward Current (1µs pulse)
Power Dissipation (Note 2)
Phototransistor (each)
Collector-Emitter Voltage
Emitter-Collector Voltage
Power Dissipation (Note 3)
-40°C to +100°C
6V
50 mA
3A
200 mW
30 V
5V
100 mW
Gray
13.2
34.8
16.0
ø 6.6
ø 3.0
C Optical Centerline
L
5.1
C
L
C
L
3.8 (2 PL)
8.0
Ch. 1
Ch. 2
16.5
3.0
C
L
6.35
11.4
Dimensions in mm (-/+ 0.12)
Green
Sensor output
(Ch. 1)
White
Sensor output
(Ch. 2)
Blk (Gnd)
Schematic
Electrical Characteristics
(T
A
=25°C unless otherwise noted)
Symbol
Parameter
Min Typ Max Units
Test Conditions
Input Diode
V
F
Forward Voltage
2.4 3.4
V
I
F
= 40 mA
I
R
Reverse Current
100
µA
V
R
= 4 V
Output Phototransistor
I
CEO
Collector Dark Current
100
nA V
CE
= 10V, Ee = 0, I
F
= 0
BV
CEO
Collector-Emitter Breakdown Voltage 30
V
I
C
= 100
µA,
Ee = 0
BV
ECO
Emitter-Collector Breakdown Voltage
5
V
I
C
= 100
µA,
Ee = 0
Coupled
V
CE(SAT)
Collector Emitter Saturation Voltage
0.4
V
I
C
= 250
µA,
I
F
= 25 mA
I
C(ON)
On-State Collector Current
400
µA
V
CE
= 10V, I
F
= 25 mA
I
CX
Cross talk
200
µA
I
F
= 25 mA, V
CE
= 2.0 V
Specifications subject to change without notice
103327 REV 1
Notes: (1) Plastic housing is soluble in chlorinated hydrocarbons and ketones. Recommended cleaning agents
are methanol or isopropanol.
(2) Derate linearly 2.6 mW/°C above 25°C.
(3) Derate linearly 1.3 mW/°C above 25°C.
5200 St. Patrick St., Montreal
Que., H4E 4N9, Canada
Tel: 514-768-8000
Fax: 514-768-8889
QF-84
The Old Railway, Princes Street
Ulverston, Cumbria, LA12 7NQ, UK
Tel: 01 229 581 551
Fax: 01 229 581 554
SILONEX [ SILONEX INC. ]
