9 Aug
2008
9 Aug
'08
2:39 p.m.
On 9 Aug 2008 at 9:06, jd wrote:
I've seen a few things with flat packs and have
had a few of the
little critters myself. Most were from Fairchild. Some didn't have the
maker's logo and some weren't marked at all.
THey were typically white ceramic packages with gold lids and gold
leads. They are either square, rectangular or round, with 2, 4, 6,
8--up to 20 leads.
Here's a nice exhibit:
http://www.vintchip.com/flatpack.html
The ones I used were ceramic, but black/gray not white. No lids,
gold leads. Typical of these was the 723 JK flip-flop--probably
because of defense spending, easier to get and cheaper than the
plastic DIP or TO-99 package, if you could find them.
The original flatpacks, I believe, came from TI. DIPs came later.
Cheers,
Chuck