CDIL BF 259 Datasheet
Continental Device India Limited
An ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company
NPN SILICON HIGH VOLTAGE TRANSISTORS BF257, BF 258, BF259
TO-39
Metal Can Package
INTENDED FOR VIDEO OUTPUT STAGES IN BLACK AND WHITE AND IN COLOUR
TELEVISION REVEIVERS.
ABSOLUTE MAXIMUM RATINGS (Ta=25ºC unless specified otherwise)
DESCRIPTION SYMBOL BF257 BF258 BF259 UNITS
Collector Emitter Voltage
Collector Base Voltage
Emitter Base Voltage
Collector Current Continuous
Peak
Total Power Dissipation @ Ta=25ºC
V
CEO
V
CBO
V
EBO
I
C
I
CM
P
D
Derate Above 25ºC <---------------6.67-------------> mW/ºC
Total Power Dissipation@ Tc=25ºC
P
D
Derate Above 25ºC <---------------46.67-----------> mW/ºC
T
Operating And Storage Junction
, T
j
stg
Temperature Range
THERMAL RESISTANCE
Junction to Ambient
Junction to Case
R
R
th(j-a)
th(j-c)
160 250 300 V
160 250 300 V
<----------------5----------------> V
<-------------100---------------> mA
<------------300----------------> mA
<------------1.0---------------> W
<----------------7----------------> W
<---------- -65 to +175------> ºC
<----------------150--------------> ºC/W
<----------------21.43-----------> ºC/W
ELECTRICAL CHARACTERISTICS (Ta=25º C unless specified otherwise)
DESCRIPTION SYMBOL TEST CONDITION BF257 BF258 BF259 UNITS
Collector Emitter Breakdown Voltage
Collector Base Breakdown Voltage
Emitter Base Breakdown Voltage
Collector Cut off Current
DC Current Gain
Collector Emitter Saturation Voltage
BV
CEOIC
BV
CBO
BV
EBO
I
CBO
h
FE
V
CE(Sat) IC
=10mA,IB=0
IC =100µA, IE =0
IE=100µA, Ic=0
VCB=100V, IE=0
V
=200V, IE=0
CB
V
=250V, IE=0
CB
IC=30mA,VCE=10V
=30mA,IB=6mA
>160
>160
>5
<0.05
ALL
>250 >300 V
>250 >300 V
>5 5 V
<0.05
<0.05
>25
<1 V
µA
µA
µA
DYNAMIC CHARACTERISTICS
Transition Frequency
f
IC=15mA, VCE=10V
T
TYP f=100MHz 75 MHz
Collector Base Capacitance
C
IE=0, VCB=30V,f=1MHz
cb
TYP 2.5 pF
*Pulse Test: Pulse Width <
Continental Device India Limited
300µs, Duty Cycle <2%
Data Sheet Page 1 of 3
TO-39 Metal Can Package
BF257, BF 258, BF259
TO-39
Metal Can Package
A
B
DIM MIN MAX
A 8.50 9.39
B 7.74 8.50
C 6.09 6.60
C
E
D 0.40 0.53
E—0.88
F 2.41 2.66
G 4.82 5.33
K
H 0.71 0.86
J 0.73 1.02
K12.70 —
L 42 DEG 48 DEG
Al l d imens ions a r e i n mm
D
G
2
1
3
L
H
J
F
2
3
PIN CONFIGURATION
1. EMITTER
2. BASE
3. COLLECTOR
1
Packing Detail
PACKAGE
TO-39 500 pcs/polybag 540 gm/500 pcs 3" x 7.5" x 7.5" 20K 17" x 15" x 13.5 " 32K 40 kgs
Continental Device India Limited
STANDARD PACK INNER CARTON BOX
Net Weight/QtyDetails
Data Sheet Page 2 of 3
Qty
OUTER CARTON BOX
Qty Gr WtSize Size
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