Jiangsu-Changjing-Electronics-Technology-Co—Ltd–BF423
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IANGSU CHANGJING ELECTRONICS TECHNOLOGY CO., LTD
TO-92 Plastic-Encapsulate Transistors
BF421
BF423
TRANSISTOR (PNP)
TO-92
1. EMITTER
2.COLLECTOR
3. BASE
FEATURES
z
Low
F
eedback
C
apacitance.
z
PNP
T
ransistors in a TO-92
P
lastic
P
ackage.
NPN
C
omplements: BF420 and BF422
Class-B
V
ideo
O
utput
S
tages in
C
olour
Te
levision and
P
rofessional
M
onitor
E
quipment.
z
ꢀꢁꢂꢃꢄꢅꢆ
Equivalent Circuit
B
F
42
1
B
F
42
3
ꢀ
ꢀ
X X X
X X X
1
1
BF421,BF423
,!ꢂ-ꢃꢄꢂꢅꢄꢁ.ꢂꢅ
ꢀ
Solid dot=Green molding compound device,
if none,the normal device
///,ꢀꢁ.ꢂ
ORDERING INFORMATION
Part Number
Package
TO-92
TO-92
TO-92
TO-92
Packing Method
Pack Quantity
1000pcs/Bag
2000pcs/Box
1000pcs/Bag
2000pcs/Box
BF421
Bulk
T
a
pe
Bulk
T
a
pe
-TA
BF421
BF423
BF423
-TA
MAXIMUM RATINGS (T
a
=25
℃
unless otherwise noted)
Symb
o
l
V
CBO
V
CEO
V
EBO
I
C
Parameter
Collector-Base Voltage
BF421
-300
BF423
-250
Unit
V
Collector-Emitter Voltage
-300
-250
V
Emitter-Base V
o
l
tage
-5
V
Collector Cur
r
e
nt -Continuous
-100
0.
83
151
mA
W
P
C
Collector Power Dissipation
T
hermal resistance from junction to ambient
Operation Junction
and Storage Temperature Range
R
thja
℃
/W
T
J
,
T
stg
–
5
5
~
+150
℃
1
Rev
.
–
2.0
ꢀꢁꢀꢂꢃꢄꢅꢂꢆꢁꢇꢂꢈꢆꢄꢆꢂꢃꢀꢄꢅꢉꢃꢅꢂꢉ
T =25
unless otherwise specified
G
a
Parameter
Symbol
Test
conditions
M
in
M
ax Unit
Collector-base breakdown voltage
BF421
BF423
BF421
BF423
-300
-250
-300
-250
-5
V
(BR)CBO
I
C
=–100
μ
A, I
E
=0
V
Collector-emitter breakdown voltage
V
(BR)CEO
I
C
= -1mA , I
B
=0
V
V
Emitter-base breakdown voltage
Collector cut-off current
Emitter cut-off current
V
(BR)EBO
I
CBO
I
E
=-100
μ
A, I
C
=0
V
CB
=-200 V ,
I
E
=0
-0.01
-0.1
μ
A
BF421
BF423
I
EBO
V
EB
=-5V ,
I
C
=0
μ
A
-0.05
DC current gain
h
FE
V
CE
=-20
V
,
I
C
=-25mA
50
60
Collector-emitter saturation voltage
BF421
BF423
I
C
=-20mA, I
B
=-2mA
I
C
=-30mA, I
B
=-5mA
V
CE
=-10
V
,
I
C
=-10mA
f =
100MHz
V
CE(sat)
-0.6
1.6
V
Transition frequency
Feedback capacitance
MHz
pF
f
T
C
re
V
CE
=-30
V
,
I
C
=0,f=1MHz
2
Rev
.
–
2.0
TO-92
Package Outline Dimensions
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
3.700
1.400
0.550
0.510
4.700
Min
Max
0.146
0.055
0.022
0.020
0.185
A
A1
b
3.300
1.100
0.380
0.360
4.
300
3.430
4.300
0.130
0.043
0.015
0.014
0.169
0.135
0.169
c
D
D1
E
4.700
0.185
e
1.270 T
Y
P
0.050 T
Y
P
e1
L
Φ
h
2.440
14.100
2.640
14.500
1.600
0.380
0.096
0.555
0.104
0.571
0.063
0.015
0.000
0.000
TO-92
Suggested Pad Layout
NOTICE
JSCJ reserve
s
the right to make modifications,enhancements,improvements,corrections or other
changes without
f
urther notice to any product herein. JSCJ does not assume any liability arising
out of the application or use of any product described herein.
3
Rev
.
–
2.0
