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wingman1985
Power-User

Join Date: Jul 2009
Location: China
Posts: 146

Copper Flash

03/14/2010 9:57 PM

http://www.jxcad.com.cn/read.php?tid-1075644.html

COPPER FLASH 0.0001 MAX.PLUS ELECTRO-SOLDER PLATE WITH 60/40 0.0001/0.0003 THICK & REFLOW FOR SOLDERABILTY

Several Questions:

1. For what product is this technicial requirement applied?(electrical circuit?)

2. how to interpret this requirement in plain English?

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Just an Engineer
Guru
Australia - Member - New Member

Join Date: Feb 2008
Location: Australia
Posts: 2181
Good Answers: 255
#1

Re: one question on "copper flash"

03/14/2010 11:01 PM

Looks like a PWB fabrication instruction coating the tracks with a copper flash as the substrate and then coating with 60/40 solder and this is to be run through reflow oven to melt the solder onto the copper.

60/40 would imply a lead based solder and usually the solder is applied to the copper surfaces so that the board material can be used in manufacture without the need for significant cleaning and preparation.

If you want someone to interpret the full specification for manufacturing pruposes, then seek professional advice and pay for it. There are many PWB fabricators in CHINA who will be able to help you with this. By the way, the thicknesses seem to imply USA product destination since most of the rest of the world specifis thickness by developed weight per surface area.

You might also want to look up HASL (Hot Air Solder Levelling) as an alternate to providing the coating over the copper flash.

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