Electronics Forum: bridges (Page 2 of 100)

Re: Wavesolder bridges

Electronics Forum | Fri Oct 23 16:01:18 EDT 1998 | Earl Moon

I need some info on how to stop the bridges I'm having on radial and axial parts that are in the same place on every board. I'm also having problems with sot-25 bridging. I'm using a Electrovert E-pak. I tried leveling the machine,solder pot, an

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: wave solder bridges

Electronics Forum | Fri Jul 28 08:27:50 EDT 2000 | Tekguy2000

Yea you gotta love those airknives. It may not work in this application if the shorts are present at the trailing edge. I have several boards that are using conns with pins at .050" centers and they short. The protrusion is .030" to .040". The shorte

Solder bridges on TQFP 100 part

Electronics Forum | Wed Aug 07 22:40:03 EDT 2019 | slthomas

Most placement machines will do a check for that prior to placement and reject the parts. I just wondered if that was something that you'd experienced while also seeing the bridges.

Solder bridges on TQFP 100 part

Electronics Forum | Thu Aug 08 22:22:05 EDT 2019 | sssamw

Did you solved this issue? I would recommend you track online station by station, until you detected the solder bridge, so you can narrow down the analysis scope and focus on potential causes.

Solder bridges on TQFP 100 part

Electronics Forum | Wed Aug 07 17:20:17 EDT 2019 | orbitcoms

The aperture over the pads is set to 95% coverage of the pad. The stencil is 0.12 mm thick.

Solder bridges on TQFP 100 part

Electronics Forum | Wed Aug 07 18:32:22 EDT 2019 | orbitcoms

How would I measure/observe coplanarity issues ?

Solder bridges on TQFP 100 part

Electronics Forum | Wed Aug 07 01:41:27 EDT 2019 | orbitcoms

Hi I am having trouble getting solder bridges on TQFP-100 (0.5mm pitch) components. The boards are pasted on semi-auto printer using laser-cut 0.12mm stencil and SN63 NC257-2 T4 paste. The components are placed using Samsung CP40LV and tghen reflow

Solder bridges on TQFP 100 part

Electronics Forum | Wed Aug 07 17:55:33 EDT 2019 | slthomas

You should be well within area and aspect ration guidelines with that. Are you printing and placing close to center on the pads? Sometimes operators will "bump" the parts to center them on the pads if they're not placed correctly, and if they've bee

Solder bridges on TQFP 100 part

Electronics Forum | Thu Aug 08 22:41:30 EDT 2019 | orbitcoms

The pick n place height for component was set to 1.4mm but I had not allowed for pin thickness. I added this (total height now 1.6mm) and I get very few solder bridges now. I might try 1.7 and see if it makes any further differnce


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