Lightning Protection
DINn inputs are designed to survive lightning induced transients as defined by RTCA DO160D, Section 22, Cat A3 and B3,
Waveforms 3, 4, and 5A, Level 3. See waveforms below.
V
V/I
Peak
25% to 75%
of Largest Peak
T1 = 6.4us
T2 = 70us
50%
0
t
50%
F = 1MHZ and 10MHZ
0
t
T1
T2
Figure 6 Voltage / Current Waveform 3
Figure 7 Current / Voltage Waveform 4
V/I
Peak
T1=40us
T2=120us
Waveform Source Impedance characteristics:
·
·
·
Waveform 3 Voc/Isc = 600V / 24A => 25 Ohms
Waveform 4 Voc/Isc = 300 V / 60 A => 5 Ohms
Waveform 5A Voc / Isc = 300V / 300A => 1 Ohm
50%
0
t
T1
T2
Figure 8 Current / Voltage Waveform 5A
©2018 Device Engineering, Inc.
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DS-MW-01066-01 Rev J
04/18/2018
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