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Transient protection in Automotive

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tjalps

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Hello!

Does anyone have any info how can I simply calculate transient protection needs for circuit in automotive.

Best regards!
 

Hello tjalps
In automotive enviroment you have to protect your circuits aganist:
Double battery start
Reverse polarity
Some 60-80V several miliseconds pulses
Some 400V several microseconds pulses
I remember an old app note from National Semiconductor, showing test procedures for automotive electronics. I'll try to find it.

Edited:
App Note not found!

Intel Microcontroller Handbook (1985!) Has a note with some basic info.
"Using microcontroller systems for electrically noisy enviroments"

SAE Standard: Look for SAE J1211.

Best regards
 

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