Philips Semiconductors
PNP high voltage transistors
Product specification
BF421; BF423
FEATURES
• Low feedback capacitance.
APPLICATIONS
• Class-B video output stages in colour television and
professional monitor equipment.
DESCRIPTION
PNP transistors in a TO-92 plastic package.
NPN complements: BF420 and BF422.
PINNING
PIN
1
2
3
base
collector
emitter
DESCRIPTION
handbook, halfpage1
2
3
2
1
3
MAM285
Fig.1 Simplified outline (TO-92) and symbol.
ORDERING INFORMATION
TYPE NUMBER
BF421
BF423
NAME
SC-43A
PACKAGE
DESCRIPTION
plastic single-ended leaded (through hole) package; 3 leads
VERSION
SOT54
QUICK REFERENCE DATA
SYMBOL
PARAMETER
VCBO
collector-base voltage
BF421
BF423
VCEO
collector-emitter voltage
BF421
BF423
ICM
peak collector current
Ptot
total power dissipation
hFE
DC current gain
Cre
feedback capacitance
fT
transition frequency
CONDITIONS
open emitter
open base
Tamb ≤ 25 °C
VCE = −20 V; IC = −25 mA
VCE = −30 V; IC = ic = 0 A; f = 1 MHz
VCE = −10 V; IC = −10 mA; f = 100 MHz
MIN.
−
−
−
−
−
−
50
−
60
MAX. UNIT
−300
V
−250
V
−300
−250
−100
830
−
1.6
−
V
V
mA
mW
pF
MHz
2004 Nov 10
2