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Fea ures
Wide receiving angle
Variety of sensitivity ranges
Side-looking package for space limited
applications
Base-emitter resistor provides ambient
light protection
De scrip ion
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 side-
looking 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.
The phototransistor has an internal base-
emitter resistor which provides protection
from low level ambient lighting
conditions. This feature is also useful
when the media being detected is semi-
transparent to infrared light in interruptive
applications.
Ab so ute Maxi mum Rat ngs
(T
A
= 25
o
C un ess oth er wise noted)
Collector- Emitter Volt age. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Emit er Re verse Cur ent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Col ec or DC Cur ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Stor age and Op er at ng Tem pera ure Range . . . . . . . . . . . . . . . . . . -40
°
C to +100
°
C
Lead Sol der ng Tem pera ure [1/16 inch (1.6 mm) from case for 5 sec. with sol der ng
iron]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
°
C
(1)
Power Dis si pa ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mW
(2)
Notes:
(1) RMA flux is rec om mended. Du a ion can be ex ended to 10 sec. max. When flow sol der ng.
Max. 20 grams force may be ap plied to leads when sol der ng.
(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 I
C(ON)
to 50
m
A.
Typi cal Per orm ance Curves
Prod uct Bul e in OP755
June 1999
NPN Pho o ran sis or with Base- Emitter Resistor
Types OP755A, OP755B, OP755C, OP755D
Op ek Tech nol ogy, Inc. 1215 W. Crosby Road Car oll on, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396
Typical Spectral Response
Wavelength - nm
9
Sche matic