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Continental Device India Limited
An ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company
PNP SILICON PLANAR EPITAXIAL HIGH VOLTAGE BF421
VIDEO TRANSISTORS BF423
TO-92
Plastic Package
High Voltage Video Amplifier
ABSOLUTE MAXIMUM RATINGS(Ta=25ºC unless specified otherwise)
DESCRIPTION SYMBOL 423 421 UNITS
Collector Emitter Voltage
Collector Base Voltage
Emitter Base Voltage
Collector Current Continuous
Power Dissipation@ Ta=25ºC
V
CEO
V
CBO
V
EBO
I
C
P
D
250 300 V
250 300 V
5V
500 mA
800 mW
Derate Above 25ºC 6.4 mW/ºC
Power Dissipation@ Tc=25ºC
P
D
2.75 W
Derate Above 25ºC 22 mW/ºC
T
Operating And Storage Junction
, T
j
stg
-55 to +150 ºC
Temperature Range
THERMAL RESISTANCE
Junction to ambient
Junction to case
R
R
th(j-a)
th(j-c)
156 ºC/W
45 ºC/W
ELECTRICAL CHARACTERISTICS (Ta=25ºC Unless Otherwise Specified)
DESCRIPTION SYMBOL TEST CONDITION 423 421 UNITS
Collector Emitter Voltage*
Collector Base Voltage
EmitterBase Voltage
Collector-Cut off Current
Emitter-Cut off Current
DC Current Gain
Collector Emitter Saturation Voltage
Base Emitter Saturation Voltage
V
CEO
V
CBO
V
EBO
I
CBO
I
EBO
h
V
CE(sat)IC
V
BE(sat) IC
IC=1.0mA,IB=0
IC=100µA.IE=0
IE=100µA, IC=0
VCB=200V,IE=0
VEB=5.0V, IC=0
IC=25mA,VCE=20V
FE
=20mA,IB=2mA
=20mA,IB=2mA
>250 >300 V
>250 >300 V
>5 >5 V
<10 <10 nA
<100 <100 nA
>50 >50
<0.5 <0.5 V
<2 <2 V
Continental Device India Limited
Data Sheet Page 1 of 4
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PNP SILICON PLANAR EPITAXIAL HIGH VOLTAGE BF421
VIDEO TRANSISTORS BF423
TO-92
Plastic Package
ELECTRICAL CHARACTERISTICS (Ta=25ºC Unless Specified Otherwise)
DESCRIPTION SYMBOL TEST CONDITION 423 421 UNITS
DYNAMIC CHARACTERISTICS
Current Gain-Bandwidth Product
Feedback Capacitance
*Pulse Condition: = Width <
300us, Duty Cycle < 2.0%.
f
C
IC=10mA, VCE=10V
T
f=50MHz
VCB=30V, IE=0
re
f=1MHz
>60 >60 MHz
<2.8 <2.8 pF
Continental Device India Limited
Data Sheet Page 2 of 4
Page 3
TO-92 Plastic Package
6
Packing D
il
TO-92 Transistors on Tape and Ammo Pack
BF421
BF423
TO-92
Plastic Package
B
UncontrolledBeyond 'L'
L
1
2
3
Solderability Ensured Dimension With 'L'
D
AA
G
3 2 1
F
H
F
PIN CONFIGURA TION
1. BASE
2. COLLECTOR
3. EMITTER
C
A
K
D
SEC AA
DIM MIN. MAX.
A 4.32 5.33
B 4.45 5.20
C 3.18 4.19
D 0.41 0.55
E 0.35 0.50
F5 DEG
G 1.14 1.40
H 1.14 1.53
K
L
All diminsions in mm.
E
12.70
1.982
3
2
—
2.082
MECHANICAL DATA
T
hh
A
H1
H0
L
t1
t
A1
F1 F2
F
P2
Po
P
(p)
W2
Wo
Do
Adhesive Tape on Top Side
FLAT SIDE
LABEL
W1
W
Ammo Pack Style
4
2
m
m
1
3
3
m
m
Flat Side of Transistor and
Adhesive Tape Visible
2000 pcs./Ammo Pack
All dimensions in mm unless specified otherwise
ITEM
1
BODY WIDTH
BODY HEIGHT
BODY THICKNESS
PITCH OF COMPONENT
FEED HOLE PITCH
FEED HOLE CENTRE TO
COMPONENT CENTRE
DISTANCE BETWEEN OUTER
LEADS
COMPONENT ALIGNMENT
TAPE WIDTH
HOLD-DOWN TAPE WIDTH
HOLE POSITION
HOLD-DOWN TAPE POSITION
LEAD WIRE CLINCH HEIGHT
COMPONENT HEIGHT
LENGTH OF SNIPPED LEADS
FEED HOLE DIAMETER
TOTAL TAPE THICKNESS
LEAD - TO - LEAD DISTANCEF1,
CLINCH HEIGHT
PULL - OUT FORCE
NOTES
1. MAXIMUM ALIGNMENT DEVIATION BETWEEN LEADS NOT TO BE GREATER THAN 0.2 mm.
2. MAXIMUM NON-CUMULATIVE VARIATION BETWEEN TAPE FEED HOLE S SHALL NOT EXCEED 1 mm IN 2 0
PITCHES .
3. HOLDDO WN TAPE NOT TO E XCEED BEYOND THE EDGE(S) OF CARRIER TAP E AND THERE SHALL BE NO
EXPOSURE OF ADHESIVE.
4. NO MORE THAN 3 CONSECUTIVE MISSING COMPONENTS ARE PERMITTED.
5. A TAPE TRAILE R, HAVING AT LEAST THREE FEED HOLES ARE REQUIR ED AFTER THE LAST COMPO NENT.
. SPLICES SHALL NOT INTERFERE WITH THE SPROCKET FEED HOLES.
SYMBOL
A1
A
T
P
Po
P2
F
h
W
Wo
W1
W2
Ho
H1
L
Do
t
F2
H2
(P)
SPECIFICATION
MIN.
NOM.
4.0
4.8
3.9
12.7
12.7
6.35
5.08
0
18
6
9
0.5
16
4
2.54
6N
MAX.
4.8
5.2
4.2
1
23.25
11.0
1.2
3
TOL .
±1
CUMULATIVE PITCH
±0.3
ERROR 1.0 mm/20
PITCH
±0.4
TO BE MEASURED AT
BOTTOM OF CLINCH
+0.6
-0.2
AT TOP OF BODY
±0.5
±0.2
+0.7
-0.5
±0.2
±0.5
±0.2
t1 0.3 - 0.6
+0.4
-0.1
D
E
E
F
REMARKS
Carrier
Strip
183
mm
PACKAGE
TO-92 Bulk
TO-92 T&A
eta
STANDARD PACK INNER CARTON BOX
Details
1K/polybag
2K/ammo box
Continental Device India Limited
Net Weight/Qty
200 gm/1K pcs
645 gm/2K pcs
OUTER CARTON BOX
Qty
3" x 7.5" x 7.5"
12.5" x 8" x 1.8"
Data Sheet Page 3 of 4
5K
2K
17" x 15" x 13.5"
17" x 15" x 13.5"
80K
32K
Qty Gr WtSize Size
23 kgs
12.5 kgs
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Notes BF421
@
BF423
TO-92
Plastic Package
Disclaimer
The product information and the selection guides facilitate selection of the CDIL's Discrete Semiconductor Device(s) best suited
for application in your product(s) as per your requirement. It is recommended that you completely review our Data Sheet(s) so as
to confirm that the Device(s) meet functionality parameters for your application. The information furnished in the Data Sheet and
on the CDIL Web Site/CD is believed to be accurate and reliable. CDIL however, does not assume responsibility for inaccuracies
or incomplete information. Furthermore, CDIL does not assume liability whatsoever, arising out of the application or use of any
CDIL product; neither does it convey any license under its patent rights nor rights of others. These products are not designed for
use in life saving/support appliances or systems. CDIL customers selling these products (either as individual Discrete
Semiconductor Devices or incorporated in their end products), in any life saving/support appliances or systems or applications do
so at their own risk and CDIL will not be responsible for any damages resulting from such sale(s).
CDIL strives for continuous improvement and reserves the right to change the specifications of its products without prior notice.
CDIL is a registered Trademark of
Continental Device India Limited
C-120 Naraina Industrial Area, New Delhi 110 028, India.
Telephone + 91-11-579 6150 Fax + 91-11-579 9569, 579 5290
e-mail sales
Continental Device India Limited
cdil.com www.cdil.com
Data Sheet Page 4 of 4
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