Electronics Forum: barrel topside fill (Page 2 of 16)

Improving PTH fill using select solder

Electronics Forum | Tue Dec 18 10:14:14 EST 2012 | moshesh

In those cases where we have a 3.2mm thick, 16-layer board with several GND layers, do we still need ground connection to each and every layer (with thermal relief) or, skip part of the ground patterns? Will it help soldeing rising. I can't reach mor

Barrel fill with Pb Free Wave Solder

Electronics Forum | Wed Dec 10 16:15:24 EST 2008 | terryl

on the front end in design, minimize the pth connections to ground planes. this takes alot of work by the pcb designer and the approval of the design engineer. connect maximum of 4 ground planes to pth, minimum 1 plane. use spoked connections. ev

Barrel fill with Pb Free Wave Solder

Electronics Forum | Thu Dec 11 07:29:58 EST 2008 | jdumont

I have done a few studies on this issue here. As a result we have increased hole diameter on heavily ground planed pins to a min of .015" over the lead diameter as well as preheating the PCB when hand soldering. I have also had to order the upper pre

Barrel fill with Pb Free Wave Solder

Electronics Forum | Wed Dec 10 09:29:59 EST 2008 | rgduval

Oops...just noticed you were referring to wave soldering. We'd still suggest a water-soluble flux, instead of the no-clean; especially at wave soldering. Also, checking pre-heat temps, and dwell time on the pot. Is the wave a chipper wave? If not

Barrel fill with Pb Free Wave Solder

Electronics Forum | Tue Dec 16 16:49:22 EST 2008 | scottd3

We ran into this problem before, on all of our models. We never quite found out the reason, we do know that if the PCB is passed through a reflow oven that is extremely dirty with evaporated solder paste flux, it will make it extremely difficult (or

Barrel fill with Pb Free Wave Solder

Electronics Forum | Fri Dec 12 11:02:20 EST 2008 | patrickbruneel

Greg, I totally agree with you that machine settings are very important in wave soldering and soldering in general. I disagree that lead free alloys can produce wetting like in the attached picture (leaded alloy). Lead free alloys have a much higher

Improving PTH fill using select solder

Electronics Forum | Mon May 14 12:44:08 EDT 2012 | tomgervascio

I am a user of an Ersa Versaflow 3/45. I was wondering if anyone could share some process pointers. I have a 0.125" multilayer PCB that I am having problems consistently achieving 75 percent hole fill on a mini-coax connector. The coax connector ha

Barrel fill with Pb Free Wave Solder

Electronics Forum | Wed Dec 10 08:30:20 EST 2008 | rgduval

Are you using no-clean solder, or just no clean flux? If you're using a solder with WS flux in the core, and a no-clean flux; we'd suggest switching to a WS flux to help during the soldering. If you are using a no-clean solder/flux combination, you

Wave Soldering Thick PCBs - Foam vs Spray Fluxing

Electronics Forum | Tue Dec 28 21:51:04 EST 2004 | KEN

When using a foam fluxer: 1. Bubble size is important. What stones are you using? Ever clean them? Too large a bubble will NOT help your situation. (I forget bubble size range....check with your fluxer mfgr.) 2. Thinner will help in capilary m

Lead free selective solder

Electronics Forum | Thu Jun 29 12:07:09 EDT 2017 | georgetruitt

HOW THICK IS THE BOARD? IS THERE A LOT OF COPPER IN THE BOARD? DOES YOUR CUSTOMERS PROVIDE HEAT RELIEF IN THE BOARDS BARREL DESIGN THERE NEEDS TO BE PLENTY OF ROOM FOR LEADFREE SOLDER TO FLOW, DID YOU CHECK YOUR PIN(LEAD)TO HOLE (BARREL) RATIO? N


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