New pcb design for S-100 prototype board available

[Sridhar Ayengar]

Chuck Guzis wrote:
> On 4 Jun 2007 at 10:21, Grant Stockly wrote:
> 
>> 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?

Only on the tin side.

Peace...  Sridhar