Electronics Forum | Fri Jun 14 14:30:36 EDT 2002 | davef
Assuming you are talking about solderable surfaces: People specify various materials to protect the solderability of the pads on the board. Gold, actually, Electroless Nickel - Immersion Gold [ENIG], is popular. * Board fabricators like it because
Electronics Forum | Tue Dec 10 05:03:58 EST 2002 | praveen
We are having solder fillet finish issue. The solder looks like rough solder on the connector leads .The plating of the leads is Nickel (99.9% purity) and the PCB plating is imersion gold. I have tried fine tuning my reflow profiles an have used N2 i
Electronics Forum | Tue Dec 10 16:30:44 EST 2002 | Randy Villeneuve
Tin is pretty standard. I would doubt your leads are only Nickel plated as Nickel will oxidize very quickly.
Electronics Forum | Tue Dec 10 20:42:43 EST 2002 | davef
Vijay, Sounds like you're not spending enough time at liquidous plus 20*C. And you need to stay there for 5 to 10 seconds. I know, I know. We have used bucketsful of WS609 over the years. See, as you say, the melting point of your solder alloy
Electronics Forum | Mon Nov 27 22:01:25 EST 2017 | bibi11952
Hello SMTNet, We had received boards from our CM, some came with a Tin plated finish on the SMT hermaphroditic edge connector, while others came with Gold plated on the same connector. Tyco supplies both version and they apparently mixed up parts.
Electronics Forum | Wed Nov 20 16:47:10 EST 2013 | aaronpavone
I have a right angle male shrouded connector and the whole set of termination leads is tin lead plated, at least 100 microinches thick. Should the entirety of the lead be conformal coated? Or can we have just the joint coated? I know I have coated le
Electronics Forum | Fri May 28 17:30:35 EDT 1999 | Dave Clements
I discovered that we have some gold plated (30 mico in.) through hole connectors which were Paste In Hole soldered (60 sec at reflow) on a HASL PCB. Do we have an embrittlement reliability issue? The calculated volume % of gold in the joints is about
Electronics Forum | Fri May 31 08:51:09 EDT 2002 | zanolli
Hello Dave, As related to connector mating interface, fretting corrosion is the oxidation of the contact points, causing high resistance across the interface. Fretting corrosion is caused my micromotions in the interface exposing the metalized conta
Electronics Forum | Fri May 28 17:44:51 EDT 1999 | Glenn Robertson
| I discovered that we have some gold plated (30 mico in.) through hole connectors which were Paste In Hole soldered (60 sec at reflow) on a HASL PCB. Do we have an embrittlement reliability issue? The calculated volume % of gold in the joints is abo
Electronics Forum | Fri May 03 16:06:44 EDT 2013 | hegemon
To be short, no change in profile is going to get you through this. As I recall the point of hard gold is to retard the wetting process, so no surprise here. For example a connector might have hard gold plating at the mating surface, but not at t
