Electronics Forum: sac305 joint (Page 1 of 8)

Solder joint issue

Electronics Forum | Wed May 17 12:08:04 EDT 2006 | Mark

Hello, I have recived from customer PCB where he found that big SMD electrolytic capacitor just fell off. I checked this boards (FR4 , Au/Ni coating). I noticed that all solder remained on the termination of capacitors and looks ok but on the boar

lead free joint finish

Electronics Forum | Fri Jan 30 06:28:42 EST 2009 | gregoryyork

Hi Armando Hotflow 7 is a big machine and one of the best Reflow ovens around (in my opinion), well suited for Lead Free. A typical 1.6mm board has the following settings for Lead Free SAC305 paste All Temperature settings are Top and Bottom Prehea

Aluminum Capacitor disassociated from sodler joint

Electronics Forum | Fri Feb 15 15:37:35 EST 2019 | emeto

Hello, I have a capacitor that doesn't form intermetallic joint with SAC 305 solder paste.The board is ENIG. Solder melts and forms good intermetallic joint with the PCB finish. However, capacitor can be removed with physical force - it looks like a

How low temperature solder joint can survive

Electronics Forum | Wed Jan 07 17:39:26 EST 2015 | duchoang

Additional info: I use SAC305 solder paste on Enig PCB.

Aluminum Capacitor disassociated from sodler joint

Electronics Forum | Tue Feb 19 10:47:47 EST 2019 | rgduval

I'm with Steve. Check the datasheet, and make sure that the terminations are meant for solder application, and not conductive epoxy. I had that happen a year or so ago with an MLCC. Drove us nuts for two days (not to mention the significant rework

Differences between solder paste alloy SAC305 and SAC405.

Electronics Forum | Thu Sep 23 08:47:25 EDT 2021 | majdi4

1)Though in many cases the difference between SAC305 and SAC405 was small,and not always statistically significant, it was observed that SAC405 generally outperformed SAC305 joints. Under 0°C to 100°C thermal cycling,no statistically significant

SAC105 vs. SAC305

Electronics Forum | Thu Sep 25 16:30:44 EDT 2008 | aj

Hi, I would be interested to hear the outcome of your trials! Although, if mechanical stress is of concern, I would look at what is causing the stress and tackle that. I would suspect that any stress great enough to fracture sAC305 joint would do t

What to use SAC305 or SAC405??

Electronics Forum | Mon Apr 16 11:58:07 EDT 2007 | cingsman

I believe SAC305 will result in a lesser amount of Ag3Sn inter-metallic compounds being formed along the joint boundary and in the sphere. Studies have been shown to point out a significant difference between the number and size of Ag3Sn plates in SA

SAC 305 Reflow & SN100C Wave and Selective

Electronics Forum | Thu Feb 15 10:48:34 EST 2007 | ck_the_flip

Is there anybody out there doing this scenario: SAC 305 Reflow & SN100C Wave and Selective Can the 2 alloys be mixed on 1 board, say, SAC 305 for SMT, and SN100C for thru-hole? Are 2 different rework chemistries needed, or can one use SN100c wire

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Fri Apr 20 07:54:25 EDT 2007 | Bob R.

I'm in the high reliability (exempt) sector and have thermal cycled hundreds of boards in the past few years. As far as which is more reliable, SnPb or SAC305, my data is similar to what the technical literature is saying, "It Depends". In low stra

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