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SMT Book – Surface Mount Technology Book PDF
Electronics Forum | Fri Jul 28 06:16:20 EDT 2006 | pavel_murtishev
Good afternoon, We run mixed LF/SnPb process for most of out products. Most of chip passives have lead free termination and some of them tend towards blistering issue. SnPb solder wets component in very strange way. Wetting phenomena seems to be abn
Electronics Forum | Fri Jul 28 09:40:11 EDT 2006 | pavel_murtishev
Good afternoon, 1. Yes, most of all I suspect the components. Could you explain what does mean "reflothermal recipe"? Ramp-to-spike? Ramp-soak-spike? Something special? Thanks. 2. Void is really huge. This voiding differs from "standard" voiding ef
Electronics Forum | Fri Jan 27 15:12:48 EST 2006 | GS
From technical point of view: it should not be a problem to mix Pb with Pb Free components soldered with a LF solder process. You have to take care about the max temperature allowed on your Pb components and make sure they can withstand the higher
Electronics Forum | Mon Nov 14 10:10:52 EST 2005 | davef
When soldering your full tin (no lead) and Pb95/Sn5 solder components, you need to modify your PbSn reflow recipe to compensate for the higher melting point of the changed solder alloy [with your Sn62/Pb36/Ag2 solder paste] on those component leads.
Electronics Forum | Thu Nov 10 08:23:35 EST 2005 | arclightzero
Hello, I am currently trying to isolate internal fallout problems with very low yield substrates mixed with great yields and have recently found that we are using a Sn62/Pb36/Ag2 solder paste with full tin (no lead) components as well as Pb95/Sn5 sol
Electronics Forum | Fri Jan 27 10:58:11 EST 2006 | mafc65
We are running our prduction (TV's)with Lead Free Solder, since 1 year ago, but we still have a lot of Electrolityc Capacitor (Thruhole and SMT)in stock that are for PB Solder. We have to use them before February-06. Do anybody know if there is a pro
Electronics Forum | Thu Jan 19 14:43:08 EST 2006 | jeffharley
So as far as pb free compliance in EU there would be no residuals from pb on the pcb's to speak of. We also have deionization cabinet with chealate filter for heavy metals that recirculates the wash water.
Electronics Forum | Fri Jan 27 18:32:15 EST 2006 | mafc65
Well, most of the capacitor are thru hole, then pcb's goes to adhesive process upsidedown to continue SMT process in which , maximun tempetarure is 120�, so temperature is not problem. About SMT capacitorS, I will check temperature specs before mount
