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liudr
Joined: 15 Nov 2011
Posts: 58
Location: USA
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 Posted: Mon Jan 02, 2012 12:11 am Post subject: Some old flatpacks |
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| I've found some ceramic flat-packs. They seem to be some logic ICs. Are they made in the 60's? Pretty happy to have found them. Just want to share some pictures and maybe dig up some old stories of someone using these chips for their lines of work in the respective era for references when I show these to friends. |
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Mon Jan 02, 2012 12:23 am Post subject: |
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Nice, I love these. The SN54L00 are TTL ICs from the 60s - date code is 6910.
What exactly does the right one in the green carrier say (SNxxxx)? |
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liudr
Joined: 15 Nov 2011
Posts: 58
Location: USA
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| Posted: Mon Jan 02, 2012 12:44 am Post subject: |
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| magictom wrote: | Nice, I love these. The SN54L00 are TTL ICs from the 60s - date code is 6910.
What exactly does the right one in the green carrier say (SNxxxx)? |
I though someone will be interested in a conversation around these "nuggets". One has SN2673 date code 6825A. It has ST984541-001 on the other side. The other only has a date code 6804A with 1002-1380-101 on the back (maybe front side since it has a dot on a corner)
I might be able to find more of these stuck in old cabinets and a lot more oldies like this:
Are any of these old stuff of any collective/trading values? I appreciate any information. |
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Mon Jan 02, 2012 2:25 am Post subject: |
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The flatpack ICs are interesting, but few people collect them so they may go for $5-10 per piece.
Not much to say about the transistor, it may sell for a few $ (unless you're lucky and it's a rare model that everybody wants). |
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liudr
Joined: 15 Nov 2011
Posts: 58
Location: USA
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| Posted: Mon Jan 02, 2012 10:55 pm Post subject: |
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| Thanks magictom! Some members are interested in trading for one of these. I might be able to get a couple of chips I don't yet have. |
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Mon Jan 02, 2012 11:33 pm Post subject: |
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| Great! BTW, the SN2673 is an odd-ball (not in the data books that I have) - perhaps a custom-IC |
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liudr
Joined: 15 Nov 2011
Posts: 58
Location: USA
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| Posted: Thu Jan 05, 2012 10:37 pm Post subject: |
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Here's more pictures of other flatpacks I found. As you can see from the card, the flatpacks are identified as a follower, the tiny circular flatpack is unknown or follower. I have no idea about the white plastic packing DIP. Any idea what they all really are? Sorry about the picture. I don't have a studio  |
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Fri Jan 06, 2012 12:01 am Post subject: |
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Nice.
The C8462J are from Signetics, but I can't find any info so most likely some custom chip (Cxxxx).
The white ceramic is from WE = Western Electric, which were notorious for not having any (public) documentation for their ICs.
The 1609 I don't know - what's the manufacturer? I can't quite see the logo |
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liudr
Joined: 15 Nov 2011
Posts: 58
Location: USA
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| Posted: Fri Jan 06, 2012 12:47 am Post subject: |
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Many of these could have come from donation say from military as there was once a navy veteran scraping parts where I work, possibly from 50s to 70s. Most parts just sit and collect dust. I am sure some of these custom chips are relatively rare.
The symbol on the circular flatpack is an oval. |
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ectech
Joined: 16 May 2012
Posts: 30
Location: Malaysia
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| Posted: Wed May 16, 2012 12:18 pm Post subject: |
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| liudr wrote: | | Here's more pictures of other flatpacks I found. As you can see from the card, the flatpacks are identified as a follower, the tiny circular flatpack is unknown or follower. I have no idea about the white plastic packing DIP. Any idea what they all really are? Sorry about the picture. I don't have a studio |
eye-opening experience to learn these ic |
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