Symbol

Parameter

Value

Unit

Junction to lead

SMA

30

°C/W

SMB

25

THERMAL RESISTANCES

Symbol

Tests Conditions

Tests Conditions

Min.

Typ.

Max.

Unit

Reverse leakage current

Tj = 25

12

µA

Tj = 100°C

0.25

2

mA

Forward voltage drop

Tj = 25

0.55

V

Tj = 125

0.43

0.5

Tj = 25

0.65

Tj = 125

0.53

0.6

STATIC ELECTRICAL CHARACTERISTICS

Pulse test :

* tp = 5 ms,

δ < 2 %

** tp = 380

µs, δ < 2%

To evaluate the maximum conduction losses use the following equation :

2

(RMS)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

IF(av) (A)

PF(av)(W)

= 0.2

δ

= 0.5

δ

= 1

δ

δ = 0.05

= 0.1

δ

T

tp

Fig. 1: Average forward power dissipation versus

average forward current.

0

25

50

75

100

125

150

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Tamb(°C)

IF(av)(A)

Rth(j-a)=Rth(j-l)

SMA

Rth(j-a)=100°C/W

S(Cu)=1.5cm²

SMB

Rth(j-a)=80°C/W

S(Cu)=1.5cm²

T

tp

Fig. 2: Average forward current versus ambient

temperature (

δ=0.5).

STPS140A/U

2/6