Nexperia
BC54PA-Q series
45 V, 1 A NPN medium power transistors
006aac684
3
10
Z
th(j-a)
(K/W)
duty cycle = 1
2
10
0.75
0.5
0.33
0.25
0.2
0.1
10
0.05
0.02
0
0.01
1
- 1
10
- 5
- 4
- 3
10
- 2
- 1
2
3
10
10
10
10
1
10
10
10
t
(s)
p
FR4 PCB; single-sided copper; tin-plated; mounting pad for collector 1 cm2
Fig. 3. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
006aac685
3
10
Z
th(j-a)
(K/W)
duty cycle = 1
0.75
2
10
0.5
0.33
0.25
0.2
0.1
10
0.05
0.02
1
0
0.01
- 1
10
- 5
- 4
- 3
10
- 2
- 1
2
3
10
10
10
10
1
10
10
10
t
(s)
p
FR4 PCB; single-sided copper; tin-plated; mounting pad for collector 6 cm2
Fig. 4. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
006aac686
3
10
Z
th(j-a)
(K/W)
duty cycle = 1
0.75
2
10
0.5
0.33
0.25
0.2
0.1
10
0.05
0.02
0.01
0
1
- 1
10
- 5
- 4
- 3
10
- 2
- 1
2
3
10
10
10
10
1
10
10
10
t
(s)
p
FR4 PCB; 4-layer copper, standard footprint
Fig. 5. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
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BC54PA-Q_SER
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Nexperia B.V. 2023. All rights reserved
Product data sheet
Rev. 1 — 2 May 2022
5 / 13