Silicon Phototransistor
SD3443/5443
DESCRIPTION
FEATURES
TO-46 metal can package
•
Choice of flat window or lensed package
•
90¡ or 18¡ (nominal) acceptance angle option
•
Wide operating temperature range
(-55¡C to +125¡C)
•
External base connection for added control
•
High sensitivity
•
Mechanically and spectrally matched to
SE3450/5450, SE3455/5455 and SE3470/5470
infrared emitting diodes
•
The SD3443/5443 series consists of an NPN silicon
phototransistor mounted in a TO-46 metal can package.
The SD3443 has flat window cans providing a wide
acceptance angle, while the SD5443 has glass lensed
cans providing a narrow acceptance angle. The TO-46
packages are ideally suited for operation in hostile
environments.
The base is connected on all SD3443 and SD5433
standard products.
INFRA-57.TIF
OUTLINE DIMENSIONS
in inches (mm)
Tolerance
3. COLLECTOR
2. BASE
1. EMITTER(TAB)
LEADS:
.046(1.17)
.036(.91)
2
1
3
DIA.
(.460)
.018
MIN.
(12.70)
.500
(0.36)
.015
.140 (3.56)
.153 (3.89)
DIA.
.137 (3.48)
.160 (4.06)
.188 (4.77)
.178 (4.52) DIA.
DIA.
.208 (5.28)
.219 (5.56)
.100(2.54)DIA
NOM
(CASE)
45°
.048(1.22)
.028(.71)
DIM_015.ds4
SD3443
DIM_15b.ds4
SD5443
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
108
Silicon Phototransistor
SD3443/5443
ELECTRICAL CHARACTERISTICS
UNITS
TEST CONDITIONS
MIN
PARAMETER
SYMBOL
TYP
MAX
ABSOLUTE MAXIMUM RATINGS
(25¡C Free-Air Temperature unless otherwise noted)
Collector-Emitter Voltage
30 V
Emitter-Collector Voltage
5 V
Power Dissipation
150 mW [À]
Operating Temperature Range
-55¡C to 125¡C
Storage Temperature Range
-65¡C to 150¡C
Soldering Temperature (10 sec)
260¡C
Notes
1. Derate linearly from 25¡C free-air temperature at the rate of
1.43 mW/¡C.
SCHEMATIC
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
109
Silicon Phototransistor
SD3443/5443
SWITCHING TIME TEST CIRCUIT
cir_03b.cdr
SWITCHING WAVEFORM
cir_004.cdr
Responsivity vs
Angular Displacement (SD3443)
gra_052.ds4
Angular displacement - degrees
Relative response
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-60 -45 -30 -15 0 +15 +30 +45 +60
Fig. 1 Responsivity vs
Angular Displacement (SD5443)
gra_053.ds4
Angular displacement - degrees
Relative response
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40 -30 -20 -10 0 +10 +20 +30 +40
Fig. 2
Dark Current vs
Temperature
gra_303.cdr
Fig. 3 Non-Saturated Switching Time vs
Load Resistance
gra_041.ds4
Load resistance - Ohms
Response time - µs
1
10
100
10 100 1000 10000
Fig. 4
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
h
110
Silicon Phototransistor
SD3443/5443
Spectral Responsivity
gra_036.ds4
Wavelength - nm
Relative response
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
400 600 800 1000 1200
Fig. 5 Coupling Characteristics
SE3450 with SD3443
gra_021.ds4
Window-to-window distance - inches
Normalized light
current
0.0
0.2
0.4
0.6
0.8
1.0
0.0 0.2 0.4 0.6 0.8 1.0
Fig. 6
Coupling Characteristics
SE5450 with SD5443
gra_024.ds4
Lens-to-lens distance - inches
Normalized light
current
0.0
0.2
0.4
0.6
0.8
1.0
0 2 4 6 7 9 1 3 5 8
Fig. 7 Collector Current vs
Ambient Temperature
gra_302.cdr
Fig. 8
All Performance Curves Show Typical Values
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
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