Transient voltage suppression diodes, Surface mount – 400w > p4sma series – Littelfuse P4SMA Series User Manual
Page 3
Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/14
Surface Mount – 400W > P4SMA series
0.1
1
10
0.000001
0.00001
0.0001
0.001
t
d
-Pulse Width (sec.)
P
PPM
-Peak Pulse Power (kW)
0.2x0.2" (5.0x5.0mm)
Copper Pad Area
I-V Curve Characteristics
Ratings and Characteristic Curves
(T
A
=25°C unless otherwise noted)
Voltage Transients
Time
Voltage Across TVS
Current Through TVS
Voltage or Current
Figure 1 - TVS Transients Clamping Waveform
Figure 2 - Peak Pulse Power Rating Curve
Vc V
BR
V
R
I
R
I
T
I
pp
V
Uni-directional
V
F
Vc V
BR
V
R
I
R
I
T
I
pp
V
Vc
V
BR
V
R
I
pp
I
R
I
T
Bi-directional
P
PPM
Peak Pulse Power Dissipation -- Max power dissipation
V
R
Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
V
BR
Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (I
T
)
V
C
Clamping Voltage -- Peak voltage measured across the suppressor at a specified Ippm (peak impulse current)
I
R
Reverse Leakage Current -- Current measured at V
R
V
F
Forward Voltage Drop for Uni-directional
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