Electronics Forum: fillets (Page 1 of 66)

Tin/Silver solder paste fillets

Electronics Forum | Thu Feb 17 17:43:19 EST 2000 | Ryan Jennens

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Tin/Silver solder paste fillets

Electronics Forum | Thu Feb 17 17:43:19 EST 2000 | Ryan Jennens

>

Re: Tin/Silver solder paste fillets

Electronics Forum | Thu Feb 17 21:42:12 EST 2000 | Dave F

Hey Bud: Moved from that Bi-crap to something serious, eh? Several things: 1 Get in touch with Doug Romm (drom@msg.ti.com) at Texas Instruments. He talks palladium. 2 Review the archives on Palladium. 3 I think you're running light on temps. Eut

Re: Tin/Silver solder paste fillets

Electronics Forum | Thu Feb 17 21:42:12 EST 2000 | Dave F

Hey Bud: Moved from that Bi-crap to something serious, eh? Several things: 1 Get in touch with Doug Romm (drom@msg.ti.com) at Texas Instruments. He talks palladium. 2 Review the archives on Palladium. 3 I think you're running light on temps. Eut

fillets on fine pitch parts/poor wetting

Electronics Forum | Thu Nov 07 12:35:38 EST 2002 | slthomas

Sounds like you're talking about the "heel" of the lead not being soldered, in other words, no heel fillet, which IS necessary. That problem, for us, was attributed primarily to poor layout (insufficient length of pad extension to provide room for

fillets on fine pitch parts/poor wetting

Electronics Forum | Wed Nov 06 16:31:59 EST 2002 | slthomas

I would also consider paste control (don't take it personally...I always have to get after people about this one), time on the stencil, time between print and reflow, solderability of the component leads, paste volume (that one really got us once....

fillets on fine pitch parts/poor wetting

Electronics Forum | Wed Nov 06 19:03:33 EST 2002 | broncos

If you are certain that reflow process is good, I would suggest starting checking the following: 1. Check to see if leads / pads are contaminated or oxidized. However, this usually results poor solder quality throughout the board. 2. Check the amou

fillets on fine pitch parts/poor wetting

Electronics Forum | Thu Nov 07 09:56:26 EST 2002 | bpan

Thanks for the ideas guys. My QC inspector can take a pick and move the back part of the lead....even though the front of the lead is soldered enough to hold. There is SOME NOT ALL areas where there is no solder on the curved portion of the lead.The

fillets on fine pitch parts/poor wetting

Electronics Forum | Wed Nov 06 15:47:49 EST 2002 | bpan

Hello All, Having a problem during reflow and would like your opinions. We are using Kester r562 water soluble paste and I am using a Kic 2000 profiler in a 4 zone oven (top only). We are seeing poor wetting or fillets that are not "passable" per IPC

Solder Fillet

Electronics Forum | Tue Jul 01 22:20:26 EDT 2008 | davef

Fillet Height [F]. Wetting is evident on the vertical surface of the termination as the minimum fillet height.

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