I've got a 12V automotive electric battery master switch circuit and need a spike suppressor like this one (link to suppressor). I'd consider buying it except the postage and import duties are adding up, so I'd like to make one. It looks like a ceramic wire-wound resistor and possibly a diode under that heat shrink.
As I understand it, a TVS is often used to limit voltage spikes and I've read a resistor can protect the TVS from excessive voltage spikes. I've got a 1.5KE22CA TVS (spec attached) and wondering whether a 3.3 Ohm 10W resistor (eg this one) will do the job.
If this is correct, should I wire the TVS and resistor in parallel or series?
As I understand it, a TVS is often used to limit voltage spikes and I've read a resistor can protect the TVS from excessive voltage spikes. I've got a 1.5KE22CA TVS (spec attached) and wondering whether a 3.3 Ohm 10W resistor (eg this one) will do the job.
If this is correct, should I wire the TVS and resistor in parallel or series?
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