Continental Device India Limited
An IS/ISO 9002 and IECQ Certified Manufacturer
IS/ISO 9002
Lic# QSC/L- 000019.2
NPN SILICON PLANAR EPITAXIAL RF TRANSISTORS
BF494
BF495
TO-92
Plastic Package
High Voltage Video Transistors
ABSOLUTE MAXIMUM RATINGS(Ta=25ºC unless specified otherwise)
DESCRIPTION
SYMBOL
Collector Emitter Voltage
Collector Base Voltage
Emitter Base Voltage
Collector Current (DC)
Collector Current(peak value)
Total Power dissipation up to
Tamb = 25ºC
Operating And Storage Junction
Temperature Range
THERMAL RESISTANCE
Junction to ambient
V
CEO
V
CBO
V
EBO
I
C
I
CM
P
tot
T
j
, T
stg
Value
20
30
5
30
30
300
-55 to +150
UNITS
V
V
V
mA
mA
mW
mW/ºC
ºC
R
th(j-a)
420
K/W
ELECTRICAL CHARACTERISTICS (Ta=25ºC Unless Otherwise Specified)
DESCRIPTION
SYMBOL TEST CONDITION
Min
I
CBO
V
CB
=20V,I
E
=0
Collector Cut- off Current
Collector Cut - off Current
EmitterCut off Current
Base Emitter Voltage
DC Current Gain
BF494
BF494A
BF494B
BF 495
BF 495C
BF 495D
I
CBO
I
EBO
V
BE(ON)
h
FE *
V
CB
=20V,I
E
=0
Ta =150 ºC
V
EB
=4V, I
C
=0
V
CE
=10V,I
C
=1mA
I
C
=1mA,V
CE
=10V
0.65
67
200
110
35
65
40
Max
500
4.0
500
0.74
221
500
215
125
135
85
UNITS
nA
µA
nA
V
Continental Device India Limited
Data Sheet
Page 1 of 4
NPN SILICON PLANAR EPITAXIAL RF TRANSISTORS
BF494
BF495
TO-92
Plastic Package
ELECTRICAL CHARACTERISTICS (Ta=25ºC Unless Specified Otherwise)
DESCRIPTION
SYMBOL TEST CONDITION
Min
DYNAMIC CHARACTERISTICS
Transition Frequency
Feedback Capacitance
Max
UNITS
f
T
C
re
I
C
=1mA, V
CE
=10V
120
1.0
MHz
pF
V
CE
=10V, I
C
=1mA
f=4.5MHz
*V
BE
decreases by about 1.7mV/K with increasing temperature.
Continental Device India Limited
Data Sheet
Page 2 of 4
BF494
BF495
TO-92
Plastic Package
TO-92 Plastic Package
TO-92 Transistors on Tape and Ammo Pack
Dimension With 'L'
B
Uncontrolled
Ammo Pack Style
MECHANICAL DATA
T
P
h
A
A1
(p)
Adhesive Tape on Top Side
D
FEE
Carrier
Strip
183
mm
h
LABEL
FLAT SIDE
A
H1
H0
L
W2
Wo
W1
W
L
Solderability Ensured
t1
t
F1
F
P2
Po
F2
Do
331m
m
42
mm
Beyond 'L'
K
1
2
3
D
G
A A
Flat Side of Transistor and
Adhesive Tape Visible
2000 pcs./Ammo Pack
All dimensions in mm unless specified otherwise
D
3
E
2
1
ITEM
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
SYMBOL
A1
A
T
P
Po
P2
F
h
W
Wo
W1
W2
Ho
H1
L
Do
t
F2
H2
(P)
SEC AA
DIM
MIN.
4.32
4.45
3.18
0.41
MAX.
5.33
5.20
4.19
0.55
F
F
3 2 1
A
B
C
D
E
F
G
H
K
L
PIN CONFIGURATION
1. BASE
2. EMITTER
3. COLLECTOR
0.35
0.50
5 DEG
1.14
1.40
1.14
1.53
12.70
1.982
—
2.082
REMARKS
MIN. NOM. MAX. TOL .
4.0
4.8
5.2
4.8
4.2
3.9
12.7
±1
12.7
±0.3 CUMULATIVE PITCH
ERROR 1.0 mm/20
PITCH
6.35
±0.4 TO BE MEASURED AT
BOTTOM OF CLINCH
+0.6
5.08
-0.2
0
1
AT TOP OF BODY
18
±0.5
6
±0.2
9
+0.7
-0.5
0.5
±0.2
16
±0.5
23.25
11.0
4
±0.2
1.2
t1 0.3 - 0.6
2.54
+0.4
-0.1
3
6N
SPECIFICATION
H
C
All diminsions in mm.
NOTES
1. MAXIMUM ALIGNMENT DEVIATION BETWEEN LEADS NOT TO BE GREATER THAN 0.2 mm.
2. MAXIMUM NON-CUMULATIVE VARIATION BETWEEN TAPE FEED HOLES SHALL NOT EXCEED 1 mm IN 20
PITCHES.
3. HOLDDOWN TAPE NOT TO EXCEED BEYOND THE EDGE(S) OF CARRIER TAPE AND THERE SHALL BE NO
EXPOSURE OF ADHESIVE.
4. NO MORE THAN 3 CONSECUTIVE MISSING COMPONENTS ARE PERMITTED.
5. A TAPE TRAILER, HAVING AT LEAST THREE FEED HOLES ARE REQUIRED AFTER THE LAST COMPONENT.
6. SPLICES SHALL NOT INTERFERE WITH THE SPROCKET FEED HOLES.
Packing Detail
PACKAGE
TO-92 Bulk
TO-92 T&A
STANDARD PACK
Details
Net Weight/Qty
1K/polybag
200 gm/1K pcs
2K/ammo box
645 gm/2K pcs
INNER CARTON BOX
Size
Qty
3" x 7.5" x 7.5"
5K
12.5" x 8" x 1.8"
2K
Data Sheet
OUTER CARTON BOX
Size
Qty
Gr Wt
17" x 15" x 13.5"
80K
23 kgs
17" x 15" x 13.5"
32K
12.5 kgs
Page 3 of 4
Continental Device India Limited
Notes
BF494
BF495
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
www.cdil.com
e-mail sales@cdil.com
Continental Device India Limited
Data Sheet
Page 4 of 4
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