UNISONIC TECHNOLOGIES CO., LTD
BF422 NPN EPITAXIAL SILICON TRANSIST OR
www.unisonic.com.tw 1 of 4
Copyright © 2012 Unisonic Technologies Co., LTD QW-R201-063.B
HIGH VOLTAGE TRANSISTOR
FEATURES
* Collector-Emitter Voltage: VCEO=250V.
* Complementary to UTC BF423.
TO-92
1
ORDERING INFORMATION
Ordering Number Package Pin Assignment Packing
Lead Free Halogen Free 1 2 3
BF422L-T92-B BF422G-T92-B TO-92 E C B Tape Box
BF422L-T92-K BF422G-T92-K TO-92 E C B Bulk
Note: xx: Output Voltage, refer to Marking Information.
BF422 NPN EPITAXIAL SILICON TRANSIST OR
UNISONIC TECHNOLOGIES CO., LTD 2 of 4
www.unisonic.com.tw QW-R201-063.B
ABSOLUTE MAXIMUM RATING (Ta=25℃)
PARAMETER SYMBOL RATINGS UNIT
Collector-Base Voltage VCBO 250 V
Collector-Emitter Voltage VCEO 250 V
Emitter-base voltage VEBO 5 V
Collector current (DC) IC 50 mA
collector current (Peak) ICP 100 mA
base current IB 50 mA
Collector Power dissipation PC 625 mW
Junction Temperature TJ 150 ℃
Storage Temperature TSTG -40 ~ +150 ℃
Note: 1 Absolute maximum ratings are those values beyond which the device could be permane ntly damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2 The device is guaranteed to meet performance specification within 0℃~70 ℃operating temperature range
and assured by design from –20℃~85℃.
ELECTRICAL CHARACTERISTICS (Ta=25℃, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Collector Cut-Off Current ICBO V
CB= 200V, IE=0 10 nA
Emitter Cut-Off Current IEBO V
EB= 5V, IC=0 50 nA
DC current gain hFE V
CE=20V, IC=25mA 50
Collector-Emitter Saturation Voltage VCE(sat) IC= 30mA, IB= 5mA 0.6 V
Base-Emitter Voltage VBE V
CE=-20V, IC=25mA 0.75 V
Transition frequency fT V
CE= 10V , IC= 10mA 60 MHz
Reverse Transfer Capacitanc e Cre V
CB= 30V, IE=0, f=1MHz 1.6 pF
BF422 NPN EPITAXIAL SILICON TRANSIST OR
UNISONIC TECHNOLOGIES CO., LTD 3 of 4
www.unisonic.com.tw QW-R201-063.B
TYPICAL CHARACTERISTICS
BF422 NPN EPITAXIAL SILICON TRANSIST OR
UNISONIC TECHNOLOGIES CO., LTD 4 of 4
www.unisonic.com.tw QW-R201-063.B
TYPICAL CHARACTERISTICS(Cont.)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all UTC products described or contained herein.
UTC products are not designed for use in life support appliances, devices or systems where malfunction
of these products can be reasonably expected to result in personal injury. Reproduction in whole or in
part is prohibited without the prior written consent of the copyright owner. The information presented in
this document does not form part of any quotation or contract, is believed to be accurate and reliable
and may be changed without notice.
