BC557B
SMALL SIGNAL PNP TRANSISTOR
■ SILICON EPI TAX IA L PLANAR PN P
TRANSISTOR
■ TO-92 PACKAGE SUITABLE FOR
THROU GH-HOLE PCB ASSEMBLY
■ THE NPN COMPLEMENTARY TYPE IS
BC547B
■
APPLICATIONS
■ WELL SUITABLE FOR TV AND HOME
APPLIANCE EQUIPMENT
■ SMALL LOAD SWITCH TRANSISTOR WITH
HIGH GAIN AND LOW SATURATION
VOLTAGE
®
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 -100 mA
I
CM
Collector Peak Current (tp < 5 ms) -200 mA
P
tot
Total Dissipation at TC = 25 oC 500 mW
T
stg
Storage Temperature -65 to 150
o
C
T
j
Max. Operating Junction Temperature 150
o
C
TO-92
Bulk
TO-92
Ammopack
Ordering Code Marking Package / Shipment
BC557B BC557B TO-92 / Bulk
BC557B-AP BC557B TO-92 / Ammopack
1/5
THERMAL DATA
R
thj-amb
•
R
thj-Case
•
Thermal Resistance Junction-Ambient Max
Thermal Resistance Junction-Case Max
250
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
= -30 V
V
CB
= -30 V TC = 150 oC
-1 -15
-4
nA
µA
I
EBO
Emitter Cut-off Current
(I
C
= 0)
V
EB
= -5 V -100 nA
V
(BR)CEO
∗ Collector-Emitter
Breakdown Voltage
(I
B
= 0)
I
C
= -10 mA -45 V
V
CE(sat)
∗ Collector-Emitter
Saturation Voltage
IC = -10 mA IB = -0.5 mA
I
C
= -100 mA IB = -5 mA
-0.06
0.18
-0.3
-0.65
V
V
V
BE(sat)
∗ Base-Emitter
Saturation Voltage
IC = -10 mA IB = -0.5 mA
I
C
= -100 mA IB = -5 mA
-0.75
-0.93
V
V
V
BE(on)
∗ Base-Emitter On
Voltage
IC = -2 mA VCE = -5 V
I
C
= -10 mA VCE = -5 V
-0.6 -0.65 -0.75
-0.82
V
V
h
FE
DC Current Gain IC = -2 mA VCE = -5 V 220 475
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 3 pF
C
EBO
Emitter-Base
Capacitance
IC = 0 VEB = -0.5 V f = 1 MHz 10 pF
NF Noise Figure
V
CE
= -5 V IC = -200 µA f = 1KHz
∆f = 200 Hz R
G
= 2 KΩ
210dB
∗ Pulsed: Pulse duration = 300 µs, duty cycle ≤ 2 %
BC557B
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
BC557B
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
BC557B
4/5
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
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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© 2003 STMicroelectro nics – Printed in Italy – All Rights Reserved
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BC557B
5/5
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