BC637-16 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
BC637-16 Datasheet PDF : 15 Pages
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NXP Semiconductors
BC637; BCP55; BCX55
60 V, 1 A NPN medium power transistors
103
Zth(j-a)
(K/W)
102
10
1
duty cycle =
1.0
0.75
0.5
0.33
0.2
0.1
0.05
0.02
0.01
0
006aaa814
10−1
10−5
10−4
10−3
10−2
10−1
1
10
102
103
tp (s)
FR4 PCB, standard footprint
Fig 5. Transient thermal impedance from junction to ambient as a function of pulse duration for SOT223;
typical values
103
006aaa089
Zth(j-a)
(K/W)
102
duty cycle =
1
0.75
0.5
0.33
0.2
10 0.1
0.05
0.02
0.01
10
10−5
10−4
10−3
10−2
10−1
1
10
102
103
tp (s)
FR4 PCB, mounting pad for collector 1 cm2
Fig 6. Transient thermal impedance from junction to ambient as a function of pulse duration for SOT223;
typical values
BC637_BCP55_BCX55_7
Product data sheet
Rev. 07 — 25 June 2007
© NXP B.V. 2007. All rights reserved.
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