4 Jun
2007
4 Jun
'07
2:04 p.m.
At 12:55 PM 6/4/2007, you wrote:
At 10:42 AM 6/4/2007, you wrote:
There is also a concern over ROHS solder and gold plated pins. I remember
words like leaching, cracking...basically bad stuff. Plus, $15 for gold
contacts and tinned pins, or $30 for gold pins and contacts...
On 4 Jun 2007 at 10:21, Grant Stockly wrote:
I'm not sure. I have a 30 year old Altair with gold plated sockets and
tin plated boards. Works fine and I don't see any oxidation. I pay about
$5-7 extra per PCB to get gold plated fingers, just because people buying
my kit are most likely not buying it for what it does but more likely what
it looks like. : ) I buy the same edge card connectors that MITS
bought, minus one part
number
digit because I am buying non gold plated pins.
The contacts are gold
plated. If I buy 10 from DigiKey they are $14-$15. If I buy direct from
the company they are $17-$20. : )
I learned that the rule was "gold against gold" and "tin against tin"
for edge connectors and IC sockets. Otherwise, there would be
galvanic corrosion between the tinned and gold surfaces, particularly
in high-humidity environments.
Is this not true?