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petronm20
Joined: 08 Mar 2017
Posts: 7
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 Posted: Wed Apr 19, 2017 10:29 pm Post subject: Chip ID / Information and Input on a number of chips! |
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| I was wondering if anyone could ID the chip in the first photo on the right (all Gold) as it does not have a MFR on it, there are a few others with no real MFR marks I was also wondering about. These are just a few that caught my eye, I don't have much experience/knowledge on any of these other than what I read any information/input will be greatly appreciated. A few of these were already in a case but most of them just caught my eye... |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Wed Apr 19, 2017 10:50 pm Post subject: |
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That one on the far right is an early National Semiconductor (1972 vintage) PROM I think
AD530 is Analog Devices
MM5613 is National Semi
CML FX307 Consumer Microcircuits Limited probably from an Organ
THe INS400x chips are very nice
THe intel C8231 is a math coprocessor, also nice
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rjluna2
Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
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| Posted: Thu Apr 20, 2017 10:21 am Post subject: |
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Whoa  Nice Intel C8231 a Arithmetic processing unit 
Looks like 25th week of 1981 vintage to me 
It doesn't have the sSpec S4273 listed here |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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petronm20
Joined: 08 Mar 2017
Posts: 7
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| Posted: Sat Apr 22, 2017 9:45 pm Post subject: |
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| Thanks, there are quite a few more INS4002's here's another one that's still on board. I couldn't find any other Mostek's in the white ceramic package. |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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petronm20
Joined: 08 Mar 2017
Posts: 7
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| Posted: Thu Apr 27, 2017 7:16 pm Post subject: |
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| Ok, thanks for the information! What is the purpose of the yellow layer of paintlike covering on the boards? |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Thu Apr 27, 2017 7:31 pm Post subject: |
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Conformal coating
Helps protect the board in rougher (moist, dust, higher vibration) environments.
Often used in industrial, medical, and military environments
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