Electronics Forum: past (Page 141 of 989)

uBGA (.5mm pitch) printing woes

Electronics Forum | Thu Sep 07 10:18:24 EDT 2017 | capse

Chrys Shea has published extensively on stencil materials, coatings and paste release mechanisms. Many of the papers are available to download on her website. Just search for Shea Engineering Services. I've worked with Chrys in the past, she is defin

0402 LED TILT

Electronics Forum | Fri Nov 24 05:38:46 EST 2017 | jineshjpr

Can anybody suggest how to reduce 0402 LED tilting as I am using Convectional Reflow oven with 10 Heating zones and controlling the solder paste with 4.2 mills paste height

Paste height measurement equipment

Electronics Forum | Sat Nov 25 22:24:42 EST 2017 | hemant_pang

Hi , Can anybody knows about PTS system Singapore who manufacturer of solder paste height inspection machine ZC 1000, we need control card of the machine, not able to get contact information of manufacturer Please share if you have some info

Pin Hole Issue after Reflow Soldering - Passive Components

Electronics Forum | Wed Feb 14 02:08:40 EST 2018 | ameenullakhan

Hi Sweetoldbob, Thanks. We are using SMQ92J solder paste ( Sn63/Pb37 ). We are on higher side of reflow time for leaded paste. Regards, Ameen

Has anyone heard of a no clean paste that can be cleaned in straight DI water ?

Electronics Forum | Fri Jan 26 12:19:24 EST 2018 | clockwatcher

I'm looking for a No Clean SAC 305 Solder Paste that can be run through our inline wash. No chemicals just DI water.

Has anyone heard of a no clean paste that can be cleaned in straight DI water ?

Electronics Forum | Wed Jan 31 07:37:48 EST 2018 | stephendo

Michael What you say is not a reason for washing. It is a reason to not use Can't Clean solder paste. Although I guess if they use the real name they wouldn't sell as much as they do by calling it No Clean.

Has anyone heard of a no clean paste that can be cleaned in straight DI water ?

Electronics Forum | Thu Feb 01 08:46:54 EST 2018 | charliedci

Your right, he is "selling it". Or I should say he is not selling no-clean solder paste.

Cpk for solder paste height

Electronics Forum | Thu Apr 12 13:21:59 EDT 2018 | emeto

Hello fellow experts! Does anyone have a SPI machine that can calculate Cpk for the solder paste height across the PCB or for selected locations? Any feedback will be appreciated.

Optimum solder paste coverage for BGAs

Electronics Forum | Fri May 25 12:52:12 EDT 2018 | oscardeharo

What would be the least and optimum solder paste coverage for good BGA solderability? Are there any studies for that? Thanks.

Stencil and paste used for .4mm pitch csp component ball size .3mm?

Electronics Forum | Thu Aug 30 13:06:10 EDT 2018 | emeto

I don't know your board, but for this specific part: 10mil round aperture on a 3.5mil stencil with type 4 paste wold be ideal


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