Littelfuse SMF Series Manuel d'utilisateur télécharger pdf (Page 4)

Transient Voltage Suppression Diodes

Speciﬁcations are subject to change without notice.

Revised: 01/20/14

Surface Mount – 200W > SMF Series

Ratings and Characteristic Curves (T

=25°C unless otherwise noted) (Continued)

0.4

0.5

0.6

0.7

0.8

0.9

-551075140

Temperature (ºC)

- Typical forward dropped voltage

Figure 6 - Forward Voltage

100

0255075 100 125 150 175

-Ambient temperature (ºC)

Peak Pulse Power (P

) or Current (I

)

Derating in Percentage %

Figure 3 - Pulse Derating Curve

PPM

- Peak Pulse Current, % I

RSM

100

150

1.0 2.0 3.0 4.0

=10µsec

Peak Value

PPM

=25°C

Pulse Width(td) is deﬁned

as the point where the peak

current decays to 50% of I

PPM

10/1000µsec. Waveform

as deﬁned by R.E.A

t-Time (ms)

Half Value

PPM

( )

Figure 4 - Pulse Waveform - 10/1000µS

0.25

0.50

0.75

1.00

1.25

1.50

0255075 100 125 150 175

M(AV)

, Steady State Power Dissipation (W)

- Tab temperature (ºC)

Figure 5 - Steady State Power Dissipation

Derating Curve

100

1000

10000

110 100

- Reverse breakdown voltage

(pf)

Measured@50%Vr

Measured@Vr=0v

Figure 7 - C

vs. Working Peak Reverse Voltage

1 2 3 4 5 6

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Littelfuse SMF Series Manuel d'utilisateur Page 4

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