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BC857AMB

45 V, 100 mA PNP general-purpose transistors

NXP Semiconductors. 

Nexperia

BC857xMB series

45 V, 100 mA PNP general-purpose transistors

6. Thermal characteristics

Table 7.

Symbol

Rth(j-a)

Thermal characteristics

Parameter

thermal resistance from

junction to ambient

Conditions

in free air

Min

[1][2] -

Typ Max

-

500

[1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.

[2] Reflow soldering is the only recommended soldering method.

Unit

K/W

103

Zth(j-a)

(K/W)

102

10

duty cycle =

1

0.75

0.5

0.33

0.2

0.1

0.05

0.02

0.01

0

006aab603

1

10−5

10−4

10−3

10−2

10−1

1

10

102

103

tp (s)

FR4 PCB, standard footprint

Fig 2. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values

BC857XMB_SER

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 21 February 2012

© Nexperia B.V. 2017. All rights reserved

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