Electronics Forum: solder bridge between ground pins (Page 1 of 5)

Placement of 32 pin QFN w/t ground pad

Electronics Forum | Thu Oct 15 11:04:28 EDT 2009 | spitkis2

Thanks Jim. Pressing the QFN into paste was what I thought of, just wasn't sure if it would cause solder paste to be pressed outside the pad area and possibly bridge with an adjacent pad. Do you recall the ratio of paste coverage to the pad area?

Placement of 32 pin QFN w/t ground pad

Electronics Forum | Wed Oct 21 08:06:06 EDT 2009 | scottp

I agree with Dave. If the device has a lot of power we'll put thermal vias between the solder deposits with annular rings of soldermask to keep solder out of the holes. We've never had to mess with placement pressure. We've been using QFNs for yea

Re: wave solder bridges

Electronics Forum | Thu Jul 27 13:59:04 EDT 2000 | Chrys Shea

Sounds like the problem is design realted - here's a cheesy trick if your product/process permits: (you know how I love my cheesey tricks!) Put an adhesive dot between the pins that are bridging. If you're gluing bottomside SMT components to the bo

Re: wave solder bridges

Electronics Forum | Thu Jul 27 12:54:53 EDT 2000 | John Thorup

Hi Jason I think Wolfgang has this one nailed. If it's the same four pins every time and nothing changes this, even rotating the board 90 degrees, then you're probably going to find something like a ground plane connected to them. I don't think sol

Re: wave solder bridges

Electronics Forum | Sat Jul 29 00:44:30 EDT 2000 | Jason

Thanks for all the ideas. I tried solder "thieves" by placing some desoldering wick behind the briging pins and it worked! I have yet to try Chrys' idea but I will first thing Monday. This is a new board that has had this problem from day one. I

Re: wave solder bridges

Electronics Forum | Thu Jul 27 12:09:41 EDT 2000 | JohnW

Jason, where on the board is your connector?, front / back / middle? and where it on the PCB that you don't have issues with? Thief pad's are basically dummy pad's taht you have after the last set of pin's on the component are are used to draw the

Re: Design guidelines for solder thief pads

Electronics Forum | Fri May 07 15:37:22 EDT 1999 | JohnW

| This is not strictly a surface mount query but any input welcome | I am thinking of using surface mount solder thief pads for a through hole connector. The connector is two rows of 0.1" pitch pins and on waving there is often a bridge on the last t

Solder Bridging On SMD Pad for Nexlev Connector

Electronics Forum | Wed Oct 29 23:07:42 EDT 2014 | rajz

Help Needed. I face a solder bridging issue on solder mask define pad at edge only for nexlev connector . The pad design such as smd at four corner only. The bridging happen on signal to ground pin only. Current stencil we use 22 round with 6 mils s

Solder briding on QFP

Electronics Forum | Fri Jan 08 02:25:42 EST 2010 | graceytiu07

Happy New Year to All: Has anyone of you encountered a solder short on QFP pin yet there's no evidence of bridging in between gaps? I am using an SnPb solder paste.

Softbeam profile

Electronics Forum | Tue Oct 15 10:46:47 EDT 2002 | Dan Davis

I have a supplier that utilizes a soft beam solder process for through hole components. We are experiencing bridging and cold joints on components with narrow pitch between pins. They are dragging the solder over these pins as well. I have asked f

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