0.040 (1.02)
0.100 (2.54)
0.050 (1.27)
45°
0.040 (1.02)
0.030 (0.76)
NOM
0.184 (4.67)
0.209 (5.31)
0.50 (12.7)
MIN
0.255 (6.48)
Collector
(Case)
Base
Emitter
Ø0.100 (2.54)
0.020 (0.51) 3X
1. Derate power dissipation linearly 3.00 mW/°C above 25°C ambient.
2. Derate power dissipation linearly 6.00 mW/°C above 25°C case.
3. RMA flux is recommended.
4. Methanol or isopropyl alcohols are recommended as cleaning
agents.
5. Soldering iron tip 1/16” (1.6mm) minimum from housing.
6. As long as leads are not under any stress or spring tension.
7. Light source is a GaAs LED emitting light at a peak wavelength of
940 nm.
PACKAGE DIMENSIONS
FEATURES
Hermetically sealed package
Narrow reception angle
European “Pro Electron” registered
Parameter Symbol Rating Unit
Operating Temperature T
OPR
-65 to +125 °C
Storage Temperature T
STG
-65 to +150 °C
Soldering Temperature (Iron)
(3,4,5 and 6)
T
SOL-I
240 for 5 sec °C
Soldering Temperature (Flow)
(3,4 and 6)
T
SOL-F
260 for 10 sec °C
Collector-Emitter Voltage V
CEO
25 V
Collector-Base Voltage V
CBO
25 V
Emitter-Base Voltage V
EBO
12 V
Power Dissipation (T
A
= 25°C)
(1)
P
D
300 mW
Power Dissipation (T
C
= 25°C)
(2)
P
D
600 mW
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°C unless otherwise specified)
NOTES:
1. Dimensions for all drawings are in inches (mm).
2. Tolerance of ± .010 (.25) on all non-nominal dimensions
unless otherwise specified.
BPW38
HERMETIC SILICON PHOTODARLINGTON
DESCRIPTION
The BPW38 is a silicon photodarlington
mounted in narrow angle TO-18 package.
C
E
B
SCHEMATIC
 2001 Fairchild Semiconductor Corporation
DS300280 3/15/01 1 OF 4 www.fairchildsemi.com