SMF54A 查看數據表（PDF） - Littelfuse, Inc

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SMF54A

Transient Voltage Suppression Diodes

Littelfuse, Inc 

Transient Voltage Suppression Diodes

Surface Mount – 200W > SMF Series

I-V Curve Characteristics

Uni-directional

Vc VBR VR

IR VF

V

IT

Ipp

PPPM Peak Pulse Power Dissipation -- Max power dissipation

VR Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation

VBR Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (IT)

VC Clamping Voltage -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current)

I Reverse Leakage Current -- Current measured at V

R

R

VF Forward Voltage Drop for Uni-directional

Ratings and Characteristic Curves (TA=25°C unless otherwise noted)

Figure 1 - TVS Transients Clamping Waveform

Figure 2 - Peak Pulse Power Rating Curve

Voltage Transients

10

Voltage Across TVS

Current Through TVS

1

Time

0.1

0.000001

0.00001

0.0001

td-Pulse Width (sec.)

0.001

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© 2017 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 12/06/17

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