
BC337-25
BC337-40
SMALL SIGNAL NPN TRANSIS TORS
PRELIMINARY DATA
■ SILICON EPI TAX IA L PLANAR N PN
TRANSISTORS
■ TO-92 PACKAGE SUITABLE FOR
THROU GH-HOLE PCB ASSEMBLY
■ THE PNP COMPLEMENTARY TYPES ARE
BC327-25 AND BC327-40 RESPECT I VEL Y
APPLICATIONS
■ WELL SUITABLE FOR TV AND HOME
APPLIANCE EQUIPMENT
■ SMALL LOAD SWITCH TRANSISTORS
WITH HIGH GAIN AND LO W SA TUR ATION
VOLTAG E
®
INTER NAL SCH E M ATI C DIAG RA M
March 2003
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CBO
Collector-Base Voltage (IE = 0) 50 V
V
CEO
Collector-Emitter Voltage (IB = 0) 45 V
V
EBO
Emitter-Base Voltage (IC = 0) 5 V
I
C
Collector Current 0.5 A
I
CM
Collector Peak Current (tp < 5 ms) 1 A
P
tot
Total Dissipation at TC = 25 oC 625 mW
T
stg
Storage Temperature -65 to 150
o
C
T
j
Max. Operating Junction Temperature 150
o
C
Ordering Code Marking Package / Shipment
BC337-25 BC337-25 TO-92 / Bulk
BC337-25-AP BC337-25 TO-92 / Ammopack
BC337-40 BC337-40 TO-92 / Bulk
BC337-40-AP BC337-40 TO-92 / Ammopack
TO-92
Bulk
TO-92
Ammopack
1/5

THERMAL DATA
R
thj-amb
•
R
thj-case
•
Thermal Resistance Junction-Ambient Max
Thermal Resistance Junction-Case Max
200
83.3
o
C/W
o
C/W
ELECTRICAL CHARACTERISTICS (T
case
= 25 oC unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
CBO
Collector Cut-off
Current (I
E
= 0)
V
CB
= 20 V
V
CB
= 20 V TC = 150 oC
100
5
nA
µA
I
EBO
Emitter Cut-off Current
(I
C
= 0)
V
EB
= 5 V 100 nA
V
(BR)CBO
Collector-Base
Breakdown Voltage
(I
E
= 0)
I
C
= 10 µA
50 V
V
(BR)CEO
∗ Collector-Emitter
Breakdown Voltage
(I
B
= 0)
I
C
= 10 mA 45 V
V
(BR)EBO
Emitter-Base
Breakdown Voltage
(I
C
= 0)
I
E
= 10 µA
5V
V
CE(sat)
∗ Collector-Emitter
Saturation Voltage
IC = 500 mA IB = 50 mA 0.7 V
V
BE(on)
∗ Base-Emitter On
Voltage
IC = 500 mA VCE = 1 V 1.2 V
h
FE
∗ DC Current Gain IC = 100 mA VCE = 1 V
for BC337-25
for BC337-40
160
250
400
600
f
T
Transition Frequency IC = 10 mA VCE = 5 V f = 100MHz 100 MHz
C
CBO
Collector-Base
Capacitance
IE = 0 VCB = 10 V f = 1 MHz 5 pF
∗ Pulsed: Pulse duration = 300 µs, duty cycle ≤ 2 %
BC337-25 / BC337-40
2/5

DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.32 4.95 0.170 0.195
b 0.36 0.51 0.014 0.020
D 4.45 4.95 0.175 0.194
E 3.30 3.94 0.130 0.155
e 2.41 2.67 0.095 0.105
e1 1.14 1.40 0.045 0.055
L 12.70 15.49 0.500 0.609
R 2.16 2.41 0.085 0.094
S1 1.14 1.52 0.045 0.059
W 0.41 0.56 0.016 0.022
V 4 degree 6 degree 4 degree 6 degree
TO-92 MECHANICA L DAT A
BC337-25 / BC337-40
3/5

DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A1 4.80 0.189
T 3.80 0.150
T1 1.60 0.063
T2 2.30 0.091
d 0.48 0.019
P0 12.50 12.70 12.90 0.492 0.500 0.508
P2 5.65 6.35 7.05 0.222 0.250 0.278
F1,F2 2.44 2.54 2.94 0.096 0.100 0.116
delta H -2.00 2.00 -0.079 0.079
W 17.50 18.00 19.00 0.689 0.709 0.748
W0 5.70 6.00 6.30 0.224 0.236 0.248
W1 8.50 9.00 9.25 0.335 0.354 0.364
W2 0.50 0.020
H 18.50 20.50 0.728 0.807
H0 15.50 16.00 16.50 0.610 0.630 0.650
H1 25.00 0.984
D0 3.80 4.00 4.20 0.150 0.157 0.165
t 0.90 0.035
L 11.00 0.433
I1 3.00 0.118
delta P -1.00 1.00 -0.039 0.039
TO-92 AMMOPACK SHIPMENT (Suffix"-AP") MECHANICAL DATA
BC337-25 / BC337-40
4/5

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of use of such inform ation nor for any infringe ment o f patents or other rig hts o f third par ties which ma y resul t from i ts use. N o li cen se is
granted by implicatio n or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are
subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products
are not authorized for use as critical compo nents in life support devices or systems without express written approval of STMicroelectronics.
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BC337-25 / BC337-40
5/5