OPB 740
Series Reflective Object
Sensors
BEDFORD OPTO TECHNOLOGY LTD
LINDSAYLANDS, BIGGAR, ML12 6NR
Tel: +44 (0) 1899 221221 Fax: +44 (0) 1899 221009
Website: bot.co.uk E-mail: bill@bot.co.uk
Description
The OPB740 through OPB744 series of
reflective object sensors each consist of an
infrared emitting diode and an NPN silicon
phototransistor mounted side by side on
converging optical axes in an black plastic
housing. Various options include choice of
no windows, blue polysulfone windows for
dust protection or opaque windows with
offset openings for improved resolution.
Available with wires as OPB740W /
OPB744W series.
The OPB 745 reflective object sensor
consists of an infrared emitting diode and an
NPN silicon photodarlington mounted side
by side on converging optical axes in a black
plastic housing.
Replaces
OPB 740 = K8700 NO WINDOWS
OPB 741 = K8701 BLUE WINDOWS
OPB 742 = K8708 OFFSET WINDOWS
OPB 743 = K8710 NO WINDOWS
OPB 744 = K8711 BLUE WINDOWS
OPB 745 = K8709 OFFSET WINDOWS
OPB 740W = K8702 NO WINDOWS/WIRES
OPB 741W = K8703 BLUE WINDOWS/WIRES
OPB 742W = K8712 NO WINDOWS/WIRES
OPB 744W = K8713
Iss A 2.3.01
15.1+/-0.1
17.8
+/-0.1
3.9 3.1
9.5
5
2.54
3.18
1.52
5.0 +/-0.1
OPB740
OPB743 OPB741
OPB744 OPB742
REFLECTIVE SURFACE
A
K
E
C
WIRE CONNECTION
ORANGE ANODE
GREEN CATHODE
WHITE COLLECTOR
BLUE EMITTER
0.5 SQ NOM
3.81
NOM
R1.52
MECHANICAL DATA
NOTES
1RMA Flux is recommended. Duration can be extended to 10sec. max. when flow soldering.
2Derate Linearly 1.82mW/oC above 26oC
3d is distance from the assembly face to the reflective surface.
4Reflective surface is Eastam Kodak neutral white test card with 90% diffuse reflectance as a .... reflective surface.
5Lower curve is based on calculated worst case condition rather than the conventional -20 limit.
6Crosstalk is the photocurrent measured with current to the input diode & no reflecting surface.
7All parameters tested using pulse technique.
BEDFORD OPTO TECHNOLOGY LTD
LINDSAYLANDS, BIGGAR, ML12 6NR
Tel: +44 (0) 1899 221221 Fax: +44 (0) 1899 221009
ABSOLUTE MAXIMUM RATINGS (25
o
C unless otherwise noted)
PARAMETER SYMBOL MIN MAX UNITS TEST CONDIS-
TIONS
INPUT DIODE
Forward Voltage VF 1.70 V If = 40mA
Reverse Current IR 100 µA Vr = 2.0V
OUTPUT PHOTOTRANSISTOR
Collector-Emitter Breakdown V(BR)CEO 30.0 V Ic = 100µA
Emitter-Collector Breakdown V(BR)ECO 5.0 V Ie = 100µA
Collector-Emitter Dark Current ICEO 100 nA Vce= 10.0V, If = 0, Ee
COUPLED CHARACTERISTICS
On state Collector Current
OPB740/OPB741/W
OPB742/W
OPB743/OPB744/W
IC(ON) (3)
(4)
50
10
µA
µA
Vce=5.0V, If=40mA,
d=150”
Crosstalk
OPB740/OPB741/W
OPB742/W
OPB743/OPB744/W
ICX (6)
10
100
µA
nA
Vce=5V, If=40mA,
Output Photodarlington OPB745. OPB745W
Collector-Emitter Breakdown Volt- V(BR)CEO 15.0 V Ic = 100µA
Emitter-Collector Breakdown Volt- V(BR)ECO 5.0 V Ie = 100µA
Collector Dark Current ICEO 250 nA Vce = 10.0V, If = 0,
On-state Collector Current IC(ON) (3) 1.00 mA Vce=5.0V, If=40mA,
Crosstalk ICX (2) 250 nA Vcc=5V, If=40mA
COUPLED
INPUT DIODE
FORWARD DC CURRENT
REVERSE DC VOLTAGE
40mA
2.0V
OUTPUT SENSOR
COLLECTOR-EMITTER VOLTAGE
EMITTER-COLLECTOR VOLTAGE
30V
5.0V
OUTPUT PHOTODARLINGTON
COLLECTOR-EMITTER VOLTAGE
EMITTER-COLLECTOR VOLTAGE
15.0V
5.0V
OPERATING TEMP -40 C TO +80oC
STORAGE TEMP -40 C TO +80oC
LEAD SOLDERING TEMP 240oC (1)
OPB 740
SERIES
OPTO ELECTRONIC DATA(Ta=25oC)
Iss A 2.3.01
