SMF3.3 Datasheet, PDF (2/4 Pages) Semtech Corporation – 3.3 Volt TVS Array For ESD and Latch-Up Protection

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Surface Mount – 200W > SMF3.3 Series
I-V Curve Characteristics
Uni-directional
Vc VBR VR
IR
IT
Ipp
VF ^V
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 Breakdown Voltage -- Maximum voltage that flows though the
BR
TVS at a specified test current (I_T)
V Clamping Voltage -- Peak voltage measured across the TVS at a
C
specified Ippm (peak impulse current)
I
R
Reverse Leakage Current -- Current measured at V_R
V_F Forward Voltage Drop for Uni-directional
note: V_F distribution range from 10V to 15V
Ratings and Characteristic Curves (T_A=25°C unless otherwise noted)
Figure 1 - TVS Transients Clamping Waveform
Figure 2 - Peak Pulse Power Rating Curve
Voltage Transients
10
TJ initial = Tamb
Voltage Across TVS
Current Through TVS
1
Time
Figure 3 - Peak Pulse Power Derating Curve
100
80
60
40
20
0
0
25 50 75 100 125 150 175
T_J - Initial Junction Temperature (ºC)
©2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/28/16
0.1
0.001
0.01
0.1
1
t_d-Pulse Width (ms)
Figure 4 - 10/1000µS Pulse Waveform
150
100
50
tr=10µsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Half Value
( ) IPPM IPPM
2
10/1000µsec. Waveform
as defined by R.E.A
td
0
0
1.0
2.0
3.0
4.0
t-Time (ms)