4
\$\begingroup\$

There is a demand for a delivery of 3 A through several layers using vias.

Presented below in the picture is my PCB manufacturer's abilities regarding vias.

A single via can withstand 1.4 A. Are there any strategies regarding how to deliver this current, maybe through several vias in parallel?

enter image description here

\$\endgroup\$
0

1 Answer 1

5
\$\begingroup\$

The displayed via current is not a maximum, but rather a recommendation to keep the temperature under control. A rise of 20° to 30° in temperature is usally fine, but it depends on your application.

If you have the space to integrate multiple vias in parallel, go for it.

I would suggest going with conservative values of 500mA per via for a 10° rise or using even bigger vias if your manufacture allows it.

Here is a tool for calculating temperature depending on via parameters.

\$\endgroup\$
1
  • \$\begingroup\$ Hello, i have a pulse of 50u seconds and 35% duty cycle ,is there a way you could recommend me to know by how much the temperature will rise after 17.5 seconds? \$\endgroup\$
    – rocko445
    Commented Nov 7, 2023 at 19:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.