Skip to main content
Mikk Leini
Mikk Leini
Senior
November 23, 2011
Question

VFQFPN pad connection

Posted on November 23, 2011 at 22:04

Hello,

Unfortunately i cannot find information about STM32 QFN middle exposed pad connection anywhere. I'm interested especially in STM32F103T8. Tester didn't show any conductance from pad to Vss or Vdd pins. To have a simpler PCB, can i connect the pad to Vdd safely?

BR,

M
    This topic has been closed for replies.

    2 replies

    hbliek2
    hbliek2
    Visitor II
    November 24, 2011
    Posted on November 24, 2011 at 12:11

    Don't know a bout this specific part, but I would choose to remove the PCB pad altogether and use the space for tracks, rather than keep the pad and connecting to VDD. After all, it has no significant thermal purpose for this mcu.

    Tesla DeLorean
    Tesla DeLorean
    Guru
    November 24, 2011
    Posted on November 24, 2011 at 15:57

    Well it will certainly be a complete bastard to remove the part if you have to desolder.

    The problem with two-layer boards is that they so often have totally inadequate power routing, and are awfully noisy.

    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    Terms & ConditionsAccessibility statement