PEMH9_PIMH9_PUMH9

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Product data sheet

Rev. 5 — 12 November 2013

6 of 17

NXP Semiconductors

PEMH9; PIMH9; PUMH9

NPN/NPN resistor-equipped transistors; R1 = 10 k

, R2 = 47 k

FR4 PCB, standard footprint

Fig 4.

Per transistor: Transient thermal impedance from junction to ambient as a function of pulse duration for

PUMH9 (SOT363); typical values

006aac750

10-5

10

10-2

10-4

102

10-1

tp (s)

10-3

103

1

102

10

103

Zth(j-a)

(K/W)

1

duty cycle = 1

0.75

0.5

0.33

0.2

0.1

0.05

0.02

0.01

0