Panasonic 2SD1257A, 2SD1257 Datasheet

Po wer Transistors

2SD1257, 2SD1257A

Silicon NPN epitaxial planar type

For power switching
Complementary to 2SB934

Features

■

●

Low collector to emitter saturation voltage V

●

Satisfactory linearity of foward current transfer ratio h

●

Large collector current I

●

N type package enabling direct soldering of the radiating fin to

C

the printed circuit board, etc. of small electronic equipment.

Absolute Maximum Ratings (T

■

Parameter

Collector to
base voltage
Collector to
emitter voltage

2SD1257
2SD1257A
2SD1257

2SD1257A
Emitter to base voltage
Peak collector current
Collector current
Collector power
dissipation

TC=25°C
Ta=25°C

Junction temperature
Storage temperature

Symbol

V

CBO

V

CEO

V

EBO

I

CP

I

C

P

C

T

j

T

stg

CE(sat)

=25˚C)

C

Ratings

130
150

80

100

7

15

7

40

1.3

150

–55 to +150

FE

Unit

W

˚C
˚C

Unit: mm

8.5±0.2

6.0±0.5

10.0±0.310.5min.

1.5max.

2.0 1.5±0.1

V

0.8±0.1

2.54±0.3

5.08±0.5
213

8.5±0.2

6.0±0.3

3.4±0.3

1.0±0.1

1.1max.

0.5max.

1:Base
2:Collector
3:Emitter
N Type Package

Unit: mm

3.4±0.3

1.0±0.1

V

V
A
A

10.0±0.3

4.4±0.5

2.0

5.08±0.5

123

0.8±0.1

2.54±0.3

–0.4

+0

1.5

R0.5
R0.5

1.1 max.

1:Base
2:Collector
3:Emitter
N Type Package (DS)

+0.4

0 to 0.4

–0.2

14.7±0.5

3.0

4.4±0.5

Electrical Characteristics (T

■

Parameter

Collector cutoff current
Emitter cutoff current
Collector to emitter
voltage

2SD1257
2SD1257A

Forward current transfer ratio

Collector to emitter saturation voltage
Base to emitter saturation voltage
Transition frequency
Turn-on time
Storage time
Fall time

*

h

Rank classification

FE2

Rank R Q P

h

FE2

60 to 120 90 to 180 130 to 260

C

Symbol

I

CBO

I

EBO

V

CEO

h

FE1

*

h

FE2

V

CE(sat)

V

BE(sat)

f

T

t

on

t

stg

t

f

=25˚C)

Conditions

VCB = 100V, IE = 0
VEB = 5V, IC = 0

IC = 10mA, IB = 0

VCE = 2V, IC = 0.1A
VCE = 2V, IC = 3A
IC = 5A, IB = 0.25A
IC = 5A, IB = 0.25A
VCE = 10V, IC = 0.5A, f = 10MHz

IC = 3A, IB1 = 0.3A, IB2 = – 0.3A,
VCC = 50V

min

80

100

45
60

typ

30

0.5

1.5

0.1

max

10
50

260

0.5

1.5

Unit

µA
µA

V

V
V

MHz

µs
µs
µs

1

Po wer Transistors 2SD1257, 2SD1257A

PC—Ta IC—V

50

)
W

(

(1)

40

C

30

20

10

(2)

Collector power dissipation P

(3)

0

0 16040 12080 14020 10060

Ambient temperature Ta (˚C

)

100

V

(

30

CE(sat)

10

3

1

0.3

0.1

0.03

0.01

Collector to emitter saturation voltage V

0.01 0.1 1 100.03 0.3 3

(1) TC=Ta
(2) With a 50 × 50 × 2mm

Al heat sink

(3) Without heat sink

(P

=1.3W)

C

V

CE(sat)—IC

TC=100˚C
25˚C

Collector current IC (A

)

IC/IB=20

–25˚C

)

CE

10

8

)
A

(

C

6

4

Collector current I

2

0

012108264

TC=25˚C

IB=55mA

50mA
45mA

40mA

35mA

30mA

15mA
10mA

5mA

20mA

Collector to emitter voltage VCE (V

V

BE(sat)—IC

)
V

(

10

BE(sat)

3

1

0.3

0.1

0.03

Base to emitter saturation voltage V

0.01

0.1 301010.3 3

Collector current IC (A

(1) IC/IB=10

=20

(2) I

C/IB

T

=25˚C

C

)

V

)
V

(

10

CE(sat)

3

1

0.3

0.1

0.03

0.01

Collector to emitter saturation voltage V

0.01 310.10.03 0.3

)

100

)
V

(

30

BE(sat)

10

(1)
(2)

3

1

0.3

0.1

0.03

Base to emitter saturation voltage V

0.01

0.01 0.1 1 100.03 0.3 3

CE(sat)—IC

(1) IC/IB=10
(2) I
T

=25˚C

C

Collector current IC (A

V

BE(sat)—IC

TC=–25˚C

100˚C

25˚C

Collector current IC (A

=20

C/IB

(2)

)

IC/IB=20

)

(1)

hFE—I

10000

3000

FE

1000

300

TC=100˚C

25˚C

100

Forward current transfer ratio h

–25˚C

30

10

3

1

0.01 0.1 1 100.03 0.3 3

Collector current IC (A

2

C

VCE=2V

10000

3000

)
MHz

1000

(

T

300

100

30

10

Transition frequency f

3

1

0.01 0.1 1 100.03 0.3 3

)

fT—I

C

VCE=10V
f=10MHz
T

C

Collector current IC (A

=25˚C

10000

)
pF

3000

(

ob

1000

300

100

30

10

3

Collector output capacitance C

1

)

Cob—V

0.1 1 10 1000.3 3 30

CB

IE=0
f=1MHz

=25˚C

T

C

Collector to base voltage VCB (V

)