Welwyn RC55Y low value where? - diyAudio
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Old 20th December 2007, 08:32 AM   #1
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Default Welwyn RC55Y low value where?

Hello guys,

i was searching for low value metal film (possibily no magnetic) resistors.
I came across this brand: Welwyn.
I have tried to search for them on the differenc common diYer's dialers as Newark, Farnell.... but they don't have low value 1/4W 1% ...like for instance 0.22 0.33 0.8 ..
Actually the lowest value they carry is 70ohm (RC55Y serie).

Does anybody have a clue on where to find these resistors and/or other good as well that are no magnetic metal - relialble - precise?

I have been searching a lot but couldn't find anything.....hope somebody can help me here.


Thanks a lot.

Best,
Stefano.
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Old 20th December 2007, 08:38 AM   #2
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Have you checked the manufacturer's website? It is unlikely they make them in such low values.
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Old 20th December 2007, 08:49 AM   #3
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yep...checked.
The RC55Y serie starts from 1ohm and there're actually other series that start from lower values.
Onfarnell i could find something but not the rc55Y that seems to be better (it's a 0.5% tollerance)
Eather way any other suggestion on different brand with that characteristic is welcome.
I need to finish the the output potentiometer.
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Old 20th December 2007, 08:56 AM   #4
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for international it's RS components i think
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Old 20th December 2007, 09:09 AM   #5
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thanks for the idea.....but one resistor is like $9 and with that price i almoust buy two naked vishay ....which are a lliiitttlee bit better...

unfortunately i need 24 resistors for 4 decks.....it make a total of 96resistors....times $6.....makes toooooo much....

and this is basically the reason of why i'm searching for a good metal no magnetc part....but nothing exotic...like naked vishay
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Old 20th December 2007, 09:12 AM   #6
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You are unlikely to get values below 1 ohm at anything better than 5%.

The last time I used something that size and value, I ordered from www.conrad.de. 0R22 5% is e.g. #417130-36. They were from Philips, now sold to Thomsen.

The easiest way round is to use any decent 1R 0.6W 1% metall film and parallel them. 5x gives you 0R2 0.2%, 3x 0R33 0.3%, 2x 0R5 0.5%, ...... Of course you can start combining 1Rs & 2Rs to give other values. And you get much reduced inductance as a bonus. Only penalty is just a bit more space.

This is what I do nowadays.


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Old 20th December 2007, 09:24 AM   #7
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I correct myself.

You CAN get values below 1R at 1% from RS. Brand unknown.

0R1 is e.g. #135-487
0R22 # 135-500
etc.

They cost around 5 Euros for ONE pack of 10. So still affordable.
I doubt you will find any non-magnetic resistors below 1 Euro and below 1R. If you would find them, please let us know.

Welwyn RC55Y is magnetic (steel endcaps).
You can also try Beyschlag (also magnetic) as recommended by Mr. Curl some time ago.


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Old 20th December 2007, 09:27 AM   #8
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ah thanks...i'll try to google the other type you listed.
For example...speaking of no magnetic resistor under 1 dollar.....well PRP are under one dollar....obviously not under 1ohm but unfortunately not under 10ohm...which is already high..........
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Old 20th December 2007, 09:31 AM   #9
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Which series from PRP were you referring to ?


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Old 20th December 2007, 09:34 AM   #10
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i'm referring to the saie carried from partsconnexion

why? are there different serie? (well i guess so...if you mentioned it)
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