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Old 6th March 2007, 05:25 PM   #1
Apogee is offline Apogee  United States
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Question Part Spec Help! (possible 2n4484)

Hello everyone,

Does anyone have a reference manual that lists this part?

It has what looks to be either N4484, M4484 or possibly H4484

The other number on it looks to be 102*4 with the * being a 0, 3 or 8 (either 0 or 3 I think)

If the *4484 is a date code then this will give an idea of the vintage.

They are TO-220 cased devices.

I'm working on a DC speed control unit and I think this is the original part number. Unfortunately, the parts are very poorly screened so it's very difficult to read.

I don't have a schematic and can't figure out who made this...

I'm trying to find a suitable substitute.

Thanks for the help!
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Old 6th March 2007, 07:53 PM   #2
Netlist is offline Netlist  Belgium
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Usually, the part number is on top, down comes the date code.
A search results in 1N4484, 2SC4484, 74484, HD44840 and TDA4484.
None of these are TO220 or come even close to being a voltage regulator or something similar.

/Hugo
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Old 6th March 2007, 08:00 PM   #3
Apogee is offline Apogee  United States
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Thanks Netlist.

Motorola also made a 2N4484 and that is what I was looking for specs on.

(Hopefully)

Thanks!
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Old 6th March 2007, 08:05 PM   #4
Netlist is offline Netlist  Belgium
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Quote:
Originally posted by Apogee
Thanks Netlist.

Motorola also made a 2N4484
Really? Hang on.

/Hugo
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Old 6th March 2007, 08:15 PM   #5
Netlist is offline Netlist  Belgium
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Strange. Even the big ECA database can not find 2N4484.
Google give many results but non of them of any value.
The highest number I could find in the 2N44xx range was 2N4453.

/Hugo
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Old 6th March 2007, 10:21 PM   #6
Apogee is offline Apogee  United States
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Hugo,

Thanks for checking.

Basically the same as I found...

Still hoping...
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