[time-nuts] lunatic fringe time standards

Chuck Harris cfharris at erols.com
Mon Apr 19 17:13:47 EDT 2010


I used to reclaim hundreds of the 2N3638's and 3643's in that ceramic
package.  I rather unceremoniously yanked them from PC boards after heating
the solder side with a propane torch.  I always tested the pulled parts, and
I can't remember ever finding a bad transistor in that package.

I wonder if there were problems in some of the production runs?

-Chuck Harris

J. Forster wrote:
> IMO, ANY of those jelley beans are garbage, IMO, including 900, 914, 923,
> 2N3638 -> 2N3643. The TO-5 size seem worse than the TO-18 size.
> 
> FWIW,
> 
> -John




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