Fea tures
Variety of sensitivity ranges
TO-18 equivalent package style
Base-emitter resistor provides ambient
light protection
De scrip tion
The OP793/OP798 series consists of
NPN silicon phototransistors molded in
dark blue epoxy packages. These
devices are 100% production tested
using infrared light for close correlation
with Optek's GaAs and GaAlAs emitters.
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 lute Maxi mum Rat ings (T
A
= 25
o
C un less oth er wise noted)
Collector- Emitter Volt age. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Emit ter Re verse Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Con tinu ous Col lec tor Cur rent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Stor age and Op er at ing Tem pera ture Range . . . . . . . . . . . . . . . . . . -40
o
C to +100
o
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
o
C
(1)
Power Dis si pa tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mW
(2)
Notes:
(1) RMA flux is recommended. Duration can be extended to 10 sec. max. when flow soldering.
Max. 20 grams force may be applied to leads when soldering.
(2) Derate linearly 3.33 mW/
o
C above 25
o
C.
(3) V
CE
= 5 V. Light source is an unfiltered GaAlAs emitting diode operating at peak emission
wavelength of 890 nm and E
e(APT)
of 1.7 mW/cm
2
average within a .250" dia. aperture.
(4) The knee point irradiance is defined as the irradiance required to increase I
C(ON)
to 50
A.
Typi cal Per form ance Curves
Prod uct Bul le tin OP793, OP798
Sep tem ber 1999
NPN Pho to tran sis tor with Base- Emitter Resistor
Types OP793, OP798 Series
Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396
Typi cal Spec tral Re sponse
Wave length - nm
Sche matic
OP793
OP798
NOTE: Dimensions not shown on OP798
are common with OP793.
Dimensions are in inches (millimeters).
Types OP793, OP798 Series
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
Elec tri cal Char ac ter is tics (T
A
= 25
o
C un less oth er wise noted)
SYM BOL
PA RAME TER
MIN TYP MAX UNITS
TEST CON DI TIONS
I
C(ON)
On-State Collector Current
OP793A
OP793B
OP793C
OP793D
2.45
1.65
0.90
0.90
7.50
4.55
3.05
7.50
mA
V
CE
= 5 V, E
e
= 1.7 mW/cm
2(3)
I
C(ON)
On-State Collector Current
OP798A
OP798B
OP798C
OP798D
4.90
3.30
1.90
1.90
15.0
9.20
6.10
15.0
mA
V
CE
= 5 V, E
e
= 1.7 mW/cm
2(3)
E
KP
Knee Point Irradiance
OP793
OP798
.10
.04
mW/cm
2
V
CE
= 5 V
(4)
I
CEO
Collector-Emitter Dark Current
100
nA
V
CE
= 10 V, E
e
= 0
I
ECO
Emitter-Reverse Current
100
A
V
CE
= 0.4 V
V
(BR)ECO
Collector-Emitter Breakdown Voltage
30
V
I
C
= 100
A
V
CE(SAT)
Collector-Emitter Saturation Voltage
0.4
V
I
C
=
0
.4
mA, E
e
= 1.7 mW/cm
2(3)
Types OP793, OP798 Series
Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396
OP593
On- State Col lec tor Cur rent
vs. Irradiance
OP793
V
CE
= 5 V
LED:
= 890 nm
OP598
OP798
On- State Col lec tor Cur rent
vs. Irradiance
V
CE
= 5 V
LED:
= 890 nm
R
L
= 1K
Nor mal ized Out put vs. Frequency
R
L
= 10K
R
L
- Load Resistance - K
V
CC
= 5 V
V
RL
= 1 V
f = 100 Hz
PW = 1 mS
LED = GaAIAs,
= 890 nm
V
RL
is voltage across R
L
Typ i cal Rise and Fall Time vs.
Load Resistance
100
10
1
.1
.01
.001
.0001
.01
E
e
- Irradiance - mW/cm
2
.1
1
10
.00001
.001
1.0
0.5
0.0
10
100
1000
Frequency -- KHz
1
10
8
6
4
2
0
15
45
30
0
60
75
90
120
105
100
10
1
.1
.01
.001
.00001
.001
.0001
1
10
.01
.1
E
e
- Irradiance - mW/cm
2
V
RL
= 1 V
V
CE
= 5 V
50% Duty Cycle
LED:
= 935 nm
Nor mal ized Light and Dark Current
vs. Am bi ent Tem pera ture
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