OP755A

Prod uct Bul le tin OP755
June 1999
NPN Phototransistor with Base-Emitter Resistor
Types OP755A, OP755B, OP755C, OP755D
Features
Ab so lute Maxi mum Rat ings (TA = 25o C un less oth er wise noted)
• Wide receiving angle
• Variety of sensitivity ranges
• Side-looking package for space limited
Collector- Emitter Volt age. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Emit ter Re verse Cur rent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Col lec tor DC Cur rent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Stor age and Op er at ing Tem pera ture Range . . . . . . . . . . . . . . . . . . -40° C to +100° C
Lead Sol der ing Tem pera ture [1/16 inch (1.6 mm) from case for 5 sec. with sol der ing
iron]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260° C(1)
Power Dis si pa tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mW(2)
applications
• Base-emitter resistor provides ambient
light protection
Description
The OP755 device consists of a NPN
silicon phototransistor molded in blue
tinted epoxy packages. The wide
receiving angle provides relatively even
reception over a large area. The sidelooking package is designed for easy PC
board mounting of slotted optical
switches or optical interrupt detectors.
The series is mechanically and spectrally
matched to the OP140 and OP240 series
of infrared emitting diodes.
Notes:
(1) RMA flux is rec om mended. Du ra tion can be ex tended to 10 sec. max. When flow sol der ing.
Max. 20 grams force may be ap plied to leads when sol der ing.
(2) Derate linearly 2.0 mW/° C above 25° C.
(3) Light source is an unfiltered GaAs LED with a peak emission wavelength of 935 nm and a
radiometric intensity level which varies less than 10% over the entire lens surface of the
phototransistor being tested.
(4) The knee point irradiance is defined as the irradiance required to increase IC(ON) to 50 µA.
Typi cal Per form ance Curves
Typical Spectral Response
Schematic
The phototransistor has an internal baseemitter resistor which provides protection
from low level ambient lighting
conditions. This feature is also useful
when the media being detected is semitransparent to infrared light in interruptive
applications.
Wavelength - nm
Op tek Tech nol ogy, Inc.
1215 W. Crosby Road
Car roll ton, Texas 75006
3-44
(972) 323- 2200
Fax (972) 323- 2396
Types OP755A, OP755B, OP755C, OP755D
o
Elec tri cal Char ac ter is tics (TA = 25 C un less oth er wise noted)
SYM BOL
PARAMETER
MIN
TYP MAX UNITS
VCE = 5 V, Ee = 1.0 mW/cm2(3)
On-State Collector Current
IC(ON)
TEST CON DI TIONS
OP755A
OP755B
OP755C
OP755D
1.80
1.20
0.70
0.70
5.50
3.40
2.25
5.50
mA
mW/cm2 VCE = 5 V(4)
EKP
Knee Point Irradiance
.2
I CEO
Collector-Emitter Dark Current
100
nA
VCE = 10 V, Ee = 0
I ECO
Emitter-Reverse Current
100
µA
VCE = 0.4 V
V
IC = 100 µA
V
IC = 100 µA, Ee = 1 mW/cm2(3)
V(BR)CEO
Collector-Emitter Breakdown
30
VCE(SAT)
Collector-Emitter Saturation Voltage
0.4
Typi cal Per form ance Curves
Normalized Collector Current
vs. Angular Displacement
On-State Collector Current
vs. Irradiance
Normalzied Light and Dark
Current vs. Ambient Temperature
100
V CE = 5 V
10
1
OP555
.1
Light Current
.01
Dark Current
.001
OP755
.0001
θ - Angular Displacement - Deg.
.00001
.001
TA - Ambient Temperature - ° C
Normalized Output
vs. Frequency
Typical Rise and Fall Time
vs. Load Resistance
1.0
.01
.1
1
Ee - Irradiance - mW/cm2
Switching Time
Test Circuit
120
VRL = 1 V
VCE = 5 V
50% Duty Cycle
LED: λ = 935 nm
V CC = 5 V
V RL = 1 V
f = 100 Hz
PW = 1mS
105
90
75
60
0.5
45
30
RL =
RL = 10KΩ
0.0
0
1
10
LED = GaAIAs, λ = 890 nm
V RL is voltage across RL
15
100
Frequency - KHz
1000
0
2
4
6
8
RL = Load Resistance - KΩ
10
Test Conditions:
Light source is pulsed LED with t r
and t f ≤ 500 ns.
IF is adjusted for V OUT = 1 Volt.
Op tek re serves the right to make changes at any time in or der to im prove de sign and to sup ply the best prod uct pos si ble.
Op tek Tech nol ogy, Inc.
1215 W. Crosby Road
Car roll ton, Texas 75006
(972)323- 2200
Fax (972)323- 2396
3-45
10