STMicroelectronics-STN951

STN951  

Low voltage fast-switching PNP power transistor  

Features  

■

Very low collector-emitter saturation voltage  

■

High current gain characteristic  

■

Fast switching speed  

4

■

Surface mounting device in medium power  

3

2

SOT-223 package  

1

Applications  

SOT-223  

■

Emergency lighting  

■

Voltage regulators  

■

Relay drivers  

■

High efficiency low voltage switching  

Figure 1.  

Internal schematic diagram  

applications  

Description  

The device is manufactured

 

in PNP planar  

technology by using a “Base Island” layout. The  

resulting transistor shows exceptional high gain  

performances coupled

 

with very low saturation  

voltage.  

T

a

ble 1.  

Order codes  

STN951  

Device summary  

Marking  

Package  

SO

T

–

223  

Packaging  

N951  

T

a

pe and reel  

October 2008  

Rev 3  

1/8  

8

STN951  

Contents  

2/8  

STN951  

Electrical ratings  

1

Electrical ratings  

Table 2.  

Symbol  

Absolute maximum rating  

Parameter  

Value  

Unit  

V

Collector-base voltage (I

 

= 0)  

-60  

V

V

CBO  

E

V

Collector-emitter voltage (I

 

= 0)  

-60  

CEO  

B

V

Emitter-base voltage (I

 

= 0)  

-6  

V

EBO  

C

I

Collector current  

-5  

-10  

A

C

I

Collector peak current (t

 

< 5 ms)  

A

CM  

P

I

Base current  

-1  

A

B

I

Base peak current (t

 

< 5 ms)  

-2  

A

BM  

P

P

T

o

tal dissipation at T  

= 25 °C  

1.6  

W

°C  

°C  

tot  

amb  

T

Storage temperature  

-65 to 150  

150  

stg  

T

Max. operating junction temperature  

j

Table 3.  

Symbol  

Thermal data  

Parameter  

Value  

Unit  

(1)  

Thermal resistance junction-amb  

__

max  

78  

°C/W  

R

thj-amb  

2

1.

Device mounted on PCB area of 1cm  

3/8  

Electrical characteristics  

STN951  

2

Electrical characteristics  

(T  

= 25 °C unless otherwise specified)  

case  

Table 4.  

Symbol  

Electrical characteristics  

Parameter  

Test conditions  

Min.  

Typ. Max. Unit  

Collector cut-off current  

V

I

= -60 V  

CB  

-0.1  

-0.1  

µA  

µA  

CBO  

(I =0)  

E

Emitter cut-off current  

I

V

= -5 V  

EB  

EBO  

(I =0)  

C

Collector-base  

Breakdown voltage  

(1)  

V

(BR)CBO  

I =

 

-100 µA  

-60  

V

C

(I =0)  

E

Collector-emitter  

Breakdown voltage  

(1)  

(1)  

V

V

(BR)CEO  

I =

 

-10 mA  

-60  

-6  

V

V

C

(I =0)  

B

Emitter-base Breakdown  

(BR)EBO  

I =

 

-100 µA  

E

voltage (I

 

=0)  

C

I =

 

-100 mA

 

I =

 

-5 mA  

-50  

mV  

mV  

mV  

mV  

-10  

-70  

C

B

(1)  

-120  

-250  

-500  

I =

 

-1 A  

I =

 

-50 mA  

V

C

B

Collector-emitter  

saturation voltage  

CE(sat)  

BE(sat)  

I =

 

-2 A  

I =

 

-50 mA  

-140  

-350  

C

B

I =

 

-5 A  

I =

 

-200 mA  

C

B

Base-emitter saturation  

voltage  

(1)  

I =

 

-4 A  

I =

 

-200 mA  

-1  

-1.15  

-1  

V

V

V

C

B

(1)  

I =

 

-4 A  

V

= -1 V  

Base-emitter on voltage  

-0.89  

V

C

CE  

BE(on)  

I =

 

-10 mA  

V

V

V

V

= -1 V  

= -1 V  

= -1 V  

= -1 V  

150  

150  

65  

300  

270  

90  

C

CE  

CE  

CE  

CE  

I =

 

-2 A  

350  

C

(1)  

DC current gain  

h

FE  

I =

 

-5 A  

C

I =

 

-10 A  

10  

25  

C

f

V

V

= -10 V

 

I =

 

-100 mA  

C

T

r

ansition frequency  

Collector-base  

130  

60  

MHz  

pF  

T

CE  

CB  

C

= -10 V  

f = 1 MHz  

CBO  

capacitance (I

 

=0)  

E

Resistive load  

T

u

rn-on time  

Storage time  

Fall time  

80  

600  

70  

ns  

ns  

ns  

t

I =

 

-1 A  

V

= -30 V  

CC  

on  

C

t

I

– I

 

= -0.1 A  

s

B1 =

 

B2  

t

f

1. Pulse

 

duration = 300 µs, duty cycle

≤

2 %  

4/8  

STN951  

Package mechanical data  

3

Package mechanical data  

In order to meet environmental requirements, ST offers these devices in ECO

P

A

CK®  

packages. These packages have a Lead-free second level interconnect. The category of  

second level interconnect is marked on the package and on the inner box label, in  

compliance with JEDEC Standard JESD97. The maximum ratings related to soldering  

conditions are also marked on the inner box label. ECO

P

ACK is an ST trademark.  

ECO

P

ACK specifications are available at:

5/8  

Package mechanical data  

STN951  

S

OT-22

3

mechanical data  

mm.  

typ  

DIM.  

min.  

max.  

1.

8

0  

0.1  

A

A1  

B

0.02  

0.60  

2.

9

0  

0.24  

6.

3

0  

0.70  

3

.00  

0.26  

6.50  

2.

3

0  

4.60  

3

.50  

7.00  

0.

8

5  

3

.15  

0.

3

5  

6.70  

B1  

c

D

e

e1  

E

3

.

3

0  

3

.70  

7.

3

0  

H

6.70  

o

V

10  

0046067_L  

6/8  

STN951  

Revision history  

4

Revision history  

.

Table 5.  

Date  

Document revision history  

Revision  

Changes  

03-Oct-2006  

30-Nov-2006  

13-Oct-2008  

1

2

3

Initial release.  

The emitter base voltage value has been modified  

Document status promoted from preliminary data to datasheet  

7/8  

STN951  

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