Derating curve, Transient thermal impedance, Pulse power dissipation – Diodes FZT489 User Manual

Page 3: Fzt489

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FZT489

Document Number DS33134 Rev. 4 - 2

3 of 7

www.diodes.com

October 2012

© Diodes Incorporated

A Product Line of

Diodes Incorporated

FZT489






Thermal Characteristics and Derating Characteristics



100µ

1m

10m 100m

1

10

100

1k

0

10

20

30

40

50

60

70

0

20

40

60

80

100 120 140 160

0.0

0.5

1.0

1.5

2.0

2.5

3.0

50mm x 50mm

2oz FR4

25mm x 25mm

2oz FR4

Derating Curve

Temperature (°C)

M

a

x

P

o

wer

Di

s

s

ipat

ion (W)

100µ

1m

10m 100m

1

10

100

1k

0

10

20

30

40

50

T

amb

=25°C

25mm x 25mm

2oz FR4

Transient Thermal Impedance

D=0.5

D=0.2

D=0.1

Single Pulse

D=0.05

T

herm

a

l Res

is

tance (°

C/

W)

Pulse Width (s)

100µ

1m

10m 100m

1

10

100

1k

1

10

100

25mm x 25mm

2oz FR4

50mm x 50mm

2oz FR4

Single Pulse

T

amb

=25°C

Pulse Power Dissipation

Pulse Width (s)

M

a

x

P

o

wer

Di

s

s

ipat

ion (W)

D=0.1

D=0.05

Single Pulse

D=0.2

D=0.5

T

amb

=25°C

50mm x 50mm

2oz FR4

Transient Thermal Impedance

Pulse Width (s)

T

her

m

al

R

esis

tanc

e (°

C/

W)

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