Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Gold finger burnishing

Views: 367


SMTA-64304163

#86549

Gold finger burnishing | 27 April, 2021

We have some circuit boards with some burnishing on the gold fingers from beveling. Does not go through the gold but is cosmetically noticeable. Is this a defect? Is it rejectable or cosmetic? Can someone tell me where the IPC deals with this? I have some photographs

This message was posted via the Electronics Forum @ SMTASMTA

reply »

#86719

Gold finger burnishing | 28 May, 2021

I'm honestly not sure IPC addresses this? the one thing i would ask myself if it were my issue: is the effected area in the critical contact area of the finger/contact? in other words if its low on the finger where the bevel was applied i bet its not in the critical contact area where it will contact its mating connector/contact.

reply »

#86740

Gold finger burnishing | 5 June, 2021

Try Sandflex Blocks for polishing. These will polish but not scratch the gold.

See: https://www.amazon.com/Sandflex-Sanding-Block-3-Pack/dp/B000GACU1Q/ref=pd_bxgy_img_3/143-4402992-3496538?_encoding=UTF8&pd_rd_i=B000GACU1Q&pd_rd_r=7be0b73a-dd71-4bcf-8011-d78dbe6026b5&pd_rd_w=AQiRw&pd_rd_wg=DjBtC&pf_rd_p=fd3ebcd0-c1a2-44cf-aba2-bbf4810b3732&pf_rd_r=JAV0CRTH6NWHZHFTSRQS&psc=1&refRID=JAV0CRTH6NWHZHFTSRQS

reply »

Jade Series Selective Soldering Machines

Manufacturing Software