The finish on one leg is Brass with a coating of 2 microns of silver
with a further coating of 2 microns of Gold. The other leg is Brass
with a coating of 2 microns of Gold straight on the brass.
Thanks for your reply and everyone else who has replied and I am now
asking our supplier if they can put a nickel layer between the Brass and
the Gold.
I still haven't had many answers regarding the leg with the silver
coating between the Brass and the Gold. Any help in this will be greatly
appreciated.
Neil
> ----------
> From: [log in to unmask][SMTP:[log in to unmask]]
> Sent: 01 October 1998 11:31
> To: [log in to unmask]; [log in to unmask]
> Subject: Re: [TN] Solderability Problems
>
> Neil,
> I don't quite understand your finish but I will try to help you a
> little. If
> the finish is silver then to solder to this takes a higher temp. If
> the
> finish is gold over the brass you might have gold migration into the
> solder
> joint and what you are really seeing on inspection is the brass which
> cannot
> be soldered to in a consistent way.
>
> The best finish is a nickel over the brass finished with a tin-lead
> plating.
>
> All of this is just an opinion but it should spark more responses if I
> am
> wrong.
>
> Come on Jack and Jim, let Nick and I know if I am correct.
>
> Linda
>
################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe: SUBSCRIBE TechNet <your full name>
To unsubscribe: SIGNOFF TechNet
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################
