Nexperia
BC817-25QA; BC817-40QA
45 V, 500 mA NPN general-purpose transistors
3WRW
:
DDD
(1) FR4 PCB, 4-layer copper, 1 cm2
(2) FR4 PCB, single-sided copper, 1 cm2
(3) FR4 PCB, 4-layer copper, standard footprint
(4) FR4 PCB, single-sided copper, standard footprint
Fig 2. Power derating curves
7DPE&
6. Thermal characteristics
Table 7.
Symbol
Rth(j-a)
Thermal characteristics
Parameter
thermal resistance from
junction to ambient
Conditions
in free air
Min Typ Max Unit
[1] -
-
417 K/W
[2] -
-
250 K/W
[3] -
-
223 K/W
[4] -
-
139 K/W
[1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
[2] Device mounted on an FR4 PCB, 4-layer copper, tin-plated and standard footprint.
[3] Device mounted on an FR4 PCB, single-sided copper, tin-plated mounting pad for collector 1 cm2.
[4] Device mounted on an FR4 PCB, 4-layer copper, tin-plated mounting pad for collector 1 cm2.
BC817-25QA_40QA
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 September 2013
© Nexperia B.V. 2017. All rights reserved
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