BC640_BCP53_BCX53_8

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 08 — 22 February 2008

8 of 15

NXP Semiconductors

BC640; BCP53; BCX53

80 V, 1 A PNP medium power transistors

FR4 PCB, standard footprint

Fig 7.

Transient thermal impedance from junction to ambient as a function of pulse duration for SOT89;

typical values

Fig 8.

Transient thermal impedance from junction to ambient as a function of pulse duration for SOT89;

typical values

006aaa224

10

1

(K/W)

10

1

0

duty cycle =

1

0.75

0.5

0.33

0.2

0.1

0.05

0.02

0.01

006aaa225

10

1

(K/W)

10

1

0

duty cycle =

1

0.75

0.5

0.33

0.2

0.1

0.05

0.02

0.01