Electronics Forum | Tue Dec 28 03:59:06 EST 2010 | riscy00
I'm investigating heat transfer by 1st order approximation between PCB and ambient air via encapsulate material (epoxy or gel or silicone), they have thermal conductivity of 0.2W/C but it hard to find specific heat capacity and density. Has anyone
Electronics Forum | Mon May 29 23:39:11 EDT 2006 | Faizal
Can anyone advice me on the effect of SN100C wave solder on SAC305 hasl board? I suppose the silver content on the hasl pcb would leech(contaminate) into solder pot.? Would it affect the surface bonding between copper pad and the solder.?
Electronics Forum | Wed Aug 05 11:04:33 EDT 2020 | ehess
What is the proper way to discard scrapped pcb's, pcba's and potted pcba's?
Electronics Forum | Thu Mar 02 14:33:26 EST 2000 | Doug Philbrick
I have a customer wanting to hide the identity of a particular component on a PCB assembly. The product cannot be potted and since the PCB is the product he doesn't want to pour over that one chip for aesthetics reasons. Any ideas on ways to permanen
Electronics Forum | Thu Mar 02 14:33:26 EST 2000 | Doug Philbrick
I have a customer wanting to hide the identity of a particular component on a PCB assembly. The product cannot be potted and since the PCB is the product he doesn't want to pour over that one chip for aesthetics reasons. Any ideas on ways to permanen
Electronics Forum | Fri Jan 14 09:36:49 EST 2000 | Richard
If the gold fingers are pad types which plug into expansion slot connectors, I have used a titanium guard attached to the wave conveyor over the solder pot, which allows the PCB to connect to the fingers but masks the solder from the gold pads along
Electronics Forum | Mon Nov 28 09:46:24 EST 2005 | pjc
I have waved gold (ENIG) boards. That's a pretty hot pot at 260C, wow. I have used 245C with good results. All other parameters look OK a glance. Well, PCB temp looks a little hot too at 130C before pot. 90-100C is typical for most No-Clean flux. At
Electronics Forum | Sat Nov 26 05:55:04 EST 2005 | milroyperera
Hi, Does any body have the experience with wave soldering a "Gold" plated PCB with SMD assembled on it? I`m experiencing massive bridging,icicles,Shadowing & Skipping. The present soldering angle is 6 deg:,pre heating rate is 2 deg/sec , Dwell time
Electronics Forum | Mon Jan 15 08:01:14 EST 2007 | pyro747
The wave process, Flux (NR 330) 3 zones preheat top and bottom side convection, with solder pot at 260 C. PCB is ran in a selective wave pallet.
Electronics Forum | Sat May 05 18:18:22 EDT 2007 | colormaker
I am using a Novastar 12S solder wave with Kester water soluable fux 22-2425. I have used this for years without problems on an old Hollis machine. Just started using the Novastar and after fine tuning I get itermitten bridging on the front of the P
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