NXP Semiconductors
BCP51; BCX51; BC51PA
45 V, 1 A PNP medium power transistors
10
3
Z
th(j-a)
(K/W)
10
2
006aac677
duty cycle = 1
0.75
0.5
0.33
0.2
0.1
10
0.05
0.01
0.02
1
0
10
–1
10
–5
10
–4
10
–3
10
–2
10
–1
1
10
10
2
t
p
(s)
10
3
FR4 PCB, standard footprint
Fig 4.
Transient thermal impedance from junction to ambient as a function of pulse duration for SOT223;
typical values
006aac678
10
3
Z
th(j-a)
(K/W)
10
2
duty cycle = 1
0.75
0.5
0.33
0.2
10
0.1
0.05
1
0
0.02
0.01
10
–1
10
–5
10
–4
10
–3
10
–2
10
–1
1
10
10
2
t
p
(s)
10
3
FR4 PCB, mounting pad for collector 1 cm
2
Fig 5.
Transient thermal impedance from junction to ambient as a function of pulse duration for SOT223;
typical values
BCP51_BCX51_BC51PA
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© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 9 — 13 October 2011
7 of 22
PHILIPS [ NXP SEMICONDUCTORS ]
