Document Number: 28737

For technical questions, contact: filmresistors.leaded@vishay.com

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Revision: 21-Feb-08

131

NFR25/25H

Fusible, Non-Flammable Resistors

Vishay BCcomponents

Pulse Loading Capabilities

Application Information

10

1

2

5

10

20

50

100

200

500

p

i

/ = 1000

t

t

t

(W)

1

NFR25H Pulse on a regular basis; maximum permissible peak pulse power (

of pulse duration (

1200

0

400

1

800

V

max.

(V)

t

NFR25H Pulse on a regular basis; maximum permissible peak pulse voltage (

of pulse duration (

100

0

0.2

0.6

0

0.4

20

40

60

80

P (W)

∆T

(K)

NFR25 Hot-spot temperature rise (

ΔT)

as a function of dissipated power