®
SMALL SIGNAL PNP TRANSISTOR
Type Marking
BF621 621
■ SILICON EPI TAX IA L PLANAR PN P HIGH
VOLTAGE TRANSISTOR
■ MINIATURE SOT-89 PLASTIC PACKAGE
FOR SURFACE MOUNTING CIRCUITS
■ TAPE AND REEL PACKING
■ THE NPN COM PLE M ENT A RY TY P E IS
BF620
BF621
PRELIMINARY DATA
APPLICATIONS
■ VIDEO AMPLIFIER CIRC UITS (RGB
SOT-89
CATHODE CURRENT CONTROL)
■ TELEPHONE WIRELINE INTERFACE (HOOK
SWITCHES, DIALER CIRCUITS)
INTER NAL SCH E M ATI C DIAG RA M
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
P
T
Collector-Base Voltage (IE = 0) -300 V
CBO
Collector-Emitter Voltage (IB = 0) -300 V
CEO
Emitter-Base Voltage (IC = 0) -5 V
EBO
Collector Current -100 mA
I
C
Collector Peak Current -200 mA
CM
Total Dissipation at TC = 25 oC 1.2 W
tot
Storage Temperature -65 to 150
stg
Max. Operating Junction Temperature 150
T
j
o
C
o
C
June 2002
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BF621
THERMAL DATA
R
• Device mounted on a PCB area of 1 cm
• Thermal Resistance Junction-Ambient Max 104.1
thj-amb
o
2
C/W
ELECTRICAL CHARACTERISTICS (T
= 25 oC unless otherwise specified)
case
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
CBO
I
EBO
V
(BR)CEO
Collector Cut-off
Current (I
= 0)
E
Emitter Cut-off Current
(I
= 0)
C
∗ Collector-Emitter
= -200 V
V
CB
V
= -200 V TC = 150 oC
CB
V
= -300 V
CB
= -5 V -50 nA
V
EB
= -10 mA -300 V
I
C
-10
-10
-100
Breakdown Voltage
(I
= 0)
B
V
(BR)EBO
Emitter-Base
= -100 µA
I
E
-5 V
Breakdown Voltage
(I
= 0)
C
V
∗ Collector-Emitter
CE(sat)
IC = -30 mA IB = - 5 mA -0.6 V
Saturation Voltage
V
∗ Base-Emitter
BE(sat)
IC = -30 mA IB = - 5 mA -1.2 V
Saturation Voltage
h
∗ DC Current Gain IC = -25 mA VCE = -20 V 50
FE
f
C
Transition Frequency IC = -15 mA VCE = -10 V f =100 MHz 60 MHz
T
Reverse Capacitance IE = 0 VCB = -30 V f = 1MHz 1.6 pF
RE
∗ Pulsed: Pulse duration = 300 µs, duty cycle ≤ 2 %
nA
µA
µA
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SOT-89 MECHANICAL DATA
BF621
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 1.4 1.6 55.1 63.0
B 0.44 0.56 17.3 22.0
B1 0.36 0.48 14.2 18.9
C 0.35 0.44 13.8 17.3
C1 0.35 0.44 13.8 17.3
D 4.4 4.6 173.2 181.1
D1 1.62 1.83 63.8 72.0
E 2.29 2.6 90.2 102.4
e 1.42 1.57 55.9 61.8
e1 2.92 3.07 115.0 120.9
H 3.94 4.25 155.1 167.3
L 0.89 1.2 35.0 47.2
mm mils
P025H
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BF621
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.
The ST logo is a trademark of STMicroelectronics
© 2002 STMicroelectro nics – Printed in Italy – All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
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