Does Raspberry Pi Zero have a polyfuse?

Question

The question says it all. If you have a definite answer, it would be great if you could post a photo of the pi zero, where the fuse is pointed out.

OK, should I create a new answer from it, and remove the answer? I am not sure. — Stowoda
– Stowoda, Commented Feb 1, 2017 at 15:54
It is entierly valid to answer your own question. It would be even better to edit the current answer, since you got the info there, but you might be a tad low on reputation. — Christian
– Christian, Commented Feb 1, 2017 at 15:57
OK; I just moved it into the answer part. Thanks for the hint. — Stowoda
– Stowoda, Commented Feb 1, 2017 at 16:04

joan · Accepted Answer · 2017-01-31 15:49:00Z

The Pi Zero does not have a fuse (polyfuse or otherwise).

See this Raspberry Pi org forum post.

Also see these limited schematics.

Stowoda · Accepted Answer · 2017-02-01 16:02:53Z

NO polyfuse for raspberry pi zero

Thanks to Joan I got the information to complete this request. Here are the schematics for the power supply of both raspberry pi Zero and PRI 3, .

Raspberry Pi Zero without fuse:

And Here for comparision RPI3 with polyfuse:

So: on the bright side the RPi Zero is not going to suffer from volt-drop to the same extent when power is drawn from the +5V pins on the GPIO connections...! — SlySven
– SlySven, Commented Jul 11, 2017 at 15:34

user2497 · Accepted Answer · 2017-07-11 23:24:24Z

3

It does not have a polyfuse, but good fuses are cheap. If you want a fuse, use a nice glass fuse:

Or a tiny fuse:

To check if you've popped it, just use an ohm measurement. You also do not have to waste a day or more praying that your polyfuse has saved you.

Or add your own polyfuse:

answered Jul 11, 2017 at 23:14

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