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feipoa
Joined: 08 Mar 2011
Posts: 553
Location: Canada
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 Posted: Wed Feb 26, 2020 9:02 pm Post subject: Which IC manufacturer has this separated P in their logo? |
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See image. The separated P is on both the TIP110A and the LP2951C. On the LP2951C, the P is italicized, but not on the TIP110A. Which manufacturer is this? Doesn't quite look like the Pericom or Power Integration logos. I'm trying to find modern digikey replacements for these that will still work properly in this upgrade.
Thanks.
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The only thing I hate more than straightening CPU pins is having CPU's with bent pins in my collection.
Last edited by feipoa on Thu Feb 27, 2020 3:11 am; edited 2 times in total |
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H3nrik V!
Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
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| Posted: Thu Feb 27, 2020 2:47 am Post subject: |
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Edit: Mistook TIP110A for a Mosfet, but is an NPN
The TIP110A, I would suspect is a pretty generic NPN transistor, so I would guess that any manufacturer would work.
Cant read the text on the other IC - is it LP293 or?
Last edited by H3nrik V! on Thu Feb 27, 2020 4:56 am; edited 1 time in total |
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feipoa
Joined: 08 Mar 2011
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Location: Canada
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H3nrik V!
Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
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| Posted: Thu Feb 27, 2020 5:00 am Post subject: |
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| I would really try to find same types, actually. If gain in transistor is different, you might have an unstable regulation, leading to voltage spikes, potentially frying the CPU in the adapter .. |
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feipoa
Joined: 08 Mar 2011
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Location: Canada
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| Posted: Thu Feb 27, 2020 5:59 am Post subject: |
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Which is why I started the post, to find out which manufacturer used that severed P logo in 1998.
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The only thing I hate more than straightening CPU pins is having CPU's with bent pins in my collection. |
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olliisit
Joined: 28 Feb 2006
Posts: 9
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| Posted: Sat Mar 07, 2020 4:26 am Post subject: Logo |
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This was "Promax-Johnton Corp."
http://www.p-johnton.com/
Seemed to be out of business. |
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feipoa
Joined: 08 Mar 2011
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Location: Canada
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