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Your choice among surface finishes

Your choice among surface finishes

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Dear colleagues. Share your experience, please. Printed ci... - Oct 30, 2019 by PavelP

We prefer Flat finish. We don't like HASL. ... - Oct 30, 2019 by Evtimov

We use ENIG whenever possible, to the extent that we will tr... - Oct 30, 2019 by Steve Thomas

What do you think about OSP ? ... - Oct 31, 2019 by PavelP

> We use ENIG whenever possible, to the extent that &... - Oct 31, 2019 by Spoiltforchoice

I've never tried OSP so can't speak to it's real world use. ... - Oct 31, 2019 by Steve Thomas

I used to make all the boards HASL, but now prefer Chemical ... - Nov 01, 2019 by gerard G

I does depend on the level of technology of the PCB. RoHS-H... - Nov 01, 2019 by g cronin

As a manufacturer, I prefer plated nickel gold, electroless ... - Nov 04, 2019 by AmitThePCBGuy

I think it might be the best choice for OEMs that only run o... - Nov 04, 2019 by Stephen

How to choose PCB finish? It depends your product applicatio... - Nov 05, 2019 by sssamw

PavelP

#83661

Your choice among surface finishes | 30 October, 2019

Dear colleagues.

Share your experience, please. Printed circuit boards with which finish surface do you prefer to mount? Which finish surface in your experience is preferable and why.

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Evtimov

#83664

Your choice among surface finishes | 30 October, 2019

We prefer Flat finish. We don't like HASL.

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Steve Thomas

#83667

Your choice among surface finishes | 30 October, 2019

We use ENIG whenever possible, to the extent that we will try to talk customers out of Pb-free HASL until our keyboard punching fingers bleed.

It's much more solderable than HASL and it's flat.

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PavelP

#83668

Your choice among surface finishes | 31 October, 2019

What do you think about OSP ?

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Spoiltforchoice

#83669

Your choice among surface finishes | 31 October, 2019

> We use ENIG whenever possible, to the extent that
> we will try to talk customers out of Pb-free HASL
> until our keyboard punching fingers bleed.

It's
> much more solderable than HASL and it's flat.

Ditto

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Steve Thomas

#83670

Your choice among surface finishes | 31 October, 2019

I've never tried OSP so can't speak to it's real world use.

I only know what I've read about it (it has a shelf life and allegedly is less physically durable than ENIG) so I don't believe that it's a good fit for us.

I understand that it solders very nicely, though.

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gerard G

#83675

Your choice among surface finishes | 1 November, 2019

I used to make all the boards HASL, but now prefer Chemical tin in thickness >1µm

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g cronin

#83676

Your choice among surface finishes | 1 November, 2019

I does depend on the level of technology of the PCB. RoHS-HASL for basic products and Silver Immersion for a flat finish, are my preferred.

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AmitThePCBGuy

#83681

Your choice among surface finishes | 4 November, 2019

As a manufacturer, I prefer plated nickel gold, electroless nickel immersion gold, immersion silver and palladium. These surface finishes are the best options to replace leaded surface finishes. These surface finishes can withstand higher temperatures and give out consistent performance over a long period of time. My company Sierra Circuits has delivered lead-free and RoHS compliant boards from the last decade.

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Stephen

#83682

Your choice among surface finishes | 4 November, 2019

I think it might be the best choice for OEMs that only run one finish and practice JIT. (taking cost into account) For everyone else I think they will eventually run into trying to use them too long after they have been opened. But when you can run both sides within a week of getting the boards, they are good. Edit this reply was to Steve regarding OSP.

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sssamw

#83687

Your choice among surface finishes | 5 November, 2019

How to choose PCB finish? It depends your product application.

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