Electronic – What happens if I supply a higher voltage than the rated voltage of the jack

adapterdcpower supplyvoltage

I want to replace the original jack from my notebook with a new one since it is broken (and I would like to avoid to replace it with the same as the original). The original AC adapter supplies 19V and a bit less than 3Amp. However I can't find on Internet a DC jack (for pannel-mounting use) whose rated voltage is 19 V. All I find are 12V DC / 3Amp MAX jacks.

So what would happen if I use my AC Adapter with that new power DC jack (so 12V 3Amp) ? Will it overheat or is it safe?

Thanks (and sorry if that's a duplicate).

Best Answer

The jacks on DigiKey are rated for 24 V: http://www.digikey.com/product-detail/en/PJ-005A/CP-5-ND/165838

I would not hesitate to use any DC barrel plug at 19V, because that's just not much voltage. Unless it's a really marginal design, it will be OK.

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