2004 Nov 05

4

NXP Semiconductors

Product data sheet

NPN medium power transistor;

20 V, 1 A

BC368

THERMAL CHARACTERISTICS

Notes

1.

Refer to SOT54 (SC-43A) standard mounting conditions.

2.

Device mounted on an FR4 printed-circuit board, single-sided copper, tin-plated footprint.

SYMBOL

PARAMETER

CONDITIONS

VALUE

UNIT

thermal resistance from junction to ambient

150

K/W

handbook, full pagewidth

10

1

1

Zth

(K/W)

tp (s)

10

MLE330

tp

tp

T

P

t

T

(10)

(9)

(8)

(7)

(6)

(5)

(4)

(3)

(2)

(1)

Fig.2 Transient thermal impedance as a function of pulse time; typical values.

(1)

δ = 1.

(2)

δ = 0.75.

(3)

δ = 0.5.

(4)

δ = 0.33.

(5)

δ = 0.2.

(6)

δ = 0.1.

(7)

δ = 0.05.

(8)

δ = 0.02.

(9)

δ = 1.

(10)

δ = 0.