Electronics Forum | Mon Aug 16 11:49:44 EDT 2004 | Kris
Hi Guys thanks for the replies. Dave, the spec is not for enig but for hard gold does your response alter if thats the case /
Electronics Forum | Mon Aug 16 16:37:08 EDT 2004 | davef
As we mentioned in an earlier response in this thread [Q5], you do NOT want to solder to hard gold. Hard gold is a wear surface. [That's IT, that's the LIST.] If you want to solder to gold, then either use: * IPC-4552 ENIG specification, mentioned
Electronics Forum | Mon Aug 16 13:18:46 EDT 2004 | davef
You bet our reponse changes. Q2R: Hard gold thickness is 4 to 10 u" for Au and 300 to 400 u" for nickel A2R: This is a hard gold spec?? It looks like a ENIG spec. Although, the Ni is quite heavy, 150 uin is sufficient for most applications. The gol
Electronics Forum | Wed Aug 11 18:36:03 EDT 2004 | davef
90 Knoop. Q2: Thickness is 4 to 10 u" for Au and 300 to 400 u" for nickel A2: This looks like a ENIG spec. Although, the Ni is quite heavy, 150 uin is sufficient for most applications. [IPC-4552 ENIG specification: * Gold thickness of 0.075 - 0.125
Electronics Forum | Thu Dec 14 19:38:28 EST 2000 | Dave F
OK, now let me ask the really dopey question ... so if the irregularity of the HASL surface is punching holes in the thermal gasket and causing shorts to the heat sink, why are you putting solder on that surface? I wonder how the thermal conductivit
Electronics Forum | Tue Jan 04 10:37:48 EST 2011 | johanhuizing
Hi Mike, We only are using ENIG not hard gold, we are using edge contacts but the connectors will only be removed if the product is being replaced, normal life time for the equipment where the electronics is build-in is 15 years. Also the electronic
Electronics Forum | Thu Dec 14 12:18:01 EST 2000 | genny
Hello all, Our company has always used HASL finish on our products. Recently however, we have a had a problem on a couple of boards that I have been told cannot be avoided with HASL, and we should switch to ENIG(electroless nickel immersion gold).
Electronics Forum | Thu Dec 14 19:32:05 EST 2000 | Dave F
Wow, someone read the fine SMTnet Archives!!!! Scary, get their name!!! [OK, I�ll stop ... Several points are: * Most of the stuff in the fine SMTnet Archives is all the bad things that we can make-up to respond to the questions people ask. Ther
Electronics Forum | Fri Dec 15 13:57:46 EST 2000 | genny
It is only after the reflow heating process that the peaks may show up, as the solder build up in some vias(due to HASL'ing) might drip down during reflow. I don't think I've ever heard of it being desirable to have a bare copper surface that will ox
Electronics Forum | Fri Feb 28 11:02:06 EST 2020 | slthomas
I'm not 100% sure which type of gold you're asking about, but if you're talking about hard gold plating, I think the most common use is to provide a durable surface for things like membrane switch contacts because it resists abrasion and other mechan
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