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August 28, 2026
Question

What are the barrel jack sizes for the STM32G081B-EVAL board?

  • August 28, 2026
  • 1 reply
  • 13 views

Evaluating the STM32G081B-EVAL board, and I’m struggling to find the sizes of the two DC barrel jacks on the board and UCPD daughter board (5V CN16 and 19V CN3). As I understand it, it would be sufficient to power CN3 and let that power the mainboard, but I can’t find either of these sizes.

Checking the BOM shows CN3 as Qiaod DC-094, but I can’t find any information about this either.

Does anyone know what size of power supply barrel jack we will need for either (preferably CN3)?

1 reply

Karl Yamashita
Principal
August 28, 2026

If you Google “DC-094 jacks”, it comes back with the barrel being 3.2mm x 1mm.

There could be some variations where the OD could be 5.5mm.

So, not to assume what the size could be, I would just use a caliper to make measurements.

 

 

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