BC857BW
SMALL SIGNAL PNP TRANSISTOR
PRELIMINARY DATA
■SILICO N EP ITA X IAL PLANA R PNP
TRANSISTOR
■MINIATURE SOT-323 PLASTIC PACKAGE
FOR SURFACE MOUNTING CIRCUITS
■TAPE AND REEL PACKING
■THE NP N COM PLE M ENT A RY TYP E IS
BC847BW
APPLICATIONS
■WELL SU ITAB LE FOR PO RTAB L E
EQUIPMENT
■SMALL LOAD SWITCH TRANSISTOR WITH
HIGH GAIN AND LOW SATURATION
VOLTAGE
®
INT E R NAL SCH E M ATI C DIAG RA M
June 2002
SOT-323
Type Marking
BC857BW 3FW
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCBO Collector-Base Voltage (IE = 0) -50 V
VCEO Collector-Emitter Voltage (IB = 0) -45 V
VEBO Emitter-Base Voltage (IC = 0) -5 V
ICCollector Current -100 m A
ICM Collector Peak Current -200 m A
Ptot Total Dissipation at TC = 25 oC 200 mW
Tstg Storage Temperature -65 to 150 oC
TjMax. Operating Junction Temperature 150 oC
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THERMAL DATA
Rthj-amb • Thermal Resistance Junction-Amb ient Max 625 oC/W
• Device mounted on a PCB area of 1 cm2.
ELE CT RICAL CHAR ACT ERISTI CS (Tcase = 25 oC unless otherwise specif ied)
Symbol Pa ra meter Test Conditions Min. Typ. Max. Unit
ICBO Collector Cut-off
Current (IE = 0) VCB = -30 V
VCB = -30 V TC = 150 oC-1 -15
-5 nA
µA
IEBO Emitter Cut-off Cu rrent
(IC = 0) VEB = -5 V -100 nA
V(BR)CBO Collector-Base
Breakdown Voltage
(IE = 0)
IC = -10 µA-50 V
V(BR)CEO∗Collector-Emitter
Breakdown Voltage
(IB = 0)
IC = -2 mA -45 V
V(BR)EBO Emitter-Base
Breakdown Voltage
(IC = 0)
IE = -10 µA-5 V
VCE(sat)∗Collector-Emitter
Saturation Voltage IC = -10 mA IB = -0.5 mA
IC = -100 mA IB = -5 mA -0.07
-0.25 -0.3
-0.65 V
V
VBE(sat)∗Base-Emitter
Saturation Voltage IC = -10 mA IB = -0.5 mA
IC = -100 mA IB = -5 mA -0.7
-0.85 V
V
VBE(on)∗Base-Emitter On
Voltage IC = -2 mA VCE = -5 V
IC = -10 mA VCE = -5 V -0.6 -0.65 -0.75
-0.82 V
V
hFE∗DC Current Gain IC = -2 mA VCE = -5 V 220 475
fTTransition Frequency IC = -10 mA VCE = -5 V f = 100MHz 100 MHz
CCBO Collector-Base
Capacitance IE = 0 VCB = -10 V f = 1 MHz 4.5 pF
NF Noise Figure VCE = -5 V IC = -0.2 mA f = 1KHz
∆f = 200 Hz RG = 2 KΩ210dB
∗ P ulsed: P ulse duration = 300 µs, d uty cy cle ≤ 2 %
BC857BW
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DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 0.8 1.1 0.031 0.043
A1 0 0.1 0 0.003
b 0.25 0.4 0.009 0.015
c 0.1 0.26 0.004 0.010
D 1.8 2.0 2.2 0.070 0.078 0.086
E 1.15 1.25 1.35 0.045 0.049 0.053
e 0.65 0.025
H 1.8 2.1 2.4 0.070 0.082 0.094
L 0.1 0.2 0.3 0.004 0.007 0.011
Q0 10
o
010
o
SOT-323 MECHANICAL DATA
FOOT PRINT SOT-323
BC857BW
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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 part ies which may resu lt from i ts u se. N o l i cen se i s
granted by implication 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 pr oducts
ar e not aut horized for use as critical compo nents in life support devices or systems without express written approval of STMicroelectronics.
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BC857BW
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