Jump to content

Is ENIG good enough for card edge connectors?


Recommended Posts

I've been toying around with building my own PCB for the 2600 and I've noticed that the price difference between ENIG gold fingers and hardened gold is quite a bit. Especially in low volumes.


Does anyone know if there are existing cart PCBs that have used ENIG for the gold fingers plating and how well they have held up? 


My concern is that ENIG might seem to work fine for the first couple of years, but will eventually have corrosion or wear problems that only show up after years of service.

Link to comment
Share on other sites

It's not hard gold, but I've had units in production and use for years with ENIG and no issues.  If it does wear away, there's copper below it, which might get a bit of patina on it, but nothing a quick run with an eraser or something won't fix.  Unless the item is a collector unit, I am not sure the extra cost of hard gold on the fingers is worth the expense.


On the other hand, depending on PCB house, hard gold on the fingers may not cost that much, so if folks care a lot, a batch of 100 PCBs might only be only $.50/PCB more for hard gold.


For my money, though, I don't think it's justified.




  • Thanks 1
Link to comment
Share on other sites

  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...