Nexperia

BAS21LL

High-voltage switching diode

aaa-027994

10-5

10

10-2

10-4

102

10-1

tp (s)

10-3

103

1

102

10

103

Zth(j-a)

(K/W)

1

duty cycle = 1

0.75

0.50

0.33

0.25

0.05

0.10

0.20

0.02

0.01

0

FR4 PCB, standard footprint

Fig. 1. Transient thermal impedance from junction to ambient as a function of pulse duration; typical values

aaa-027995

10-5

10

10-2

10-4

102

10-1

tp (s)

10-3

103

1

102

10

103

Zth(j-a)

(K/W)

1

duty cycle = 1

0.05

0.10

0.20

0.25

0.33

0.50

0.75

0.01

0

0.02

FR4 PCB, mounting pad for cathode 1 cm2

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

BAS21LL

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Product data sheet

27 February 2018

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