Guys can you help me indentify theese resistors? - diyAudio
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Old 16th October 2010, 11:06 PM   #1
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Default Guys can you help me indentify theese resistors?

I need to source them but didnt know what brand, otherwise I need to change all (nearly 200psc) instead 4 burned

It have logo they remind me bennic logo or vishay, but i was not able to find them, but maybe somebody know it will help me a lot.

thanks in advance
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Old 16th October 2010, 11:38 PM   #2
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Looks like Roederstein/Resista to me. Good hunting.
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Old 17th October 2010, 05:26 PM   #3
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Thanks wrenchone, unfortunatley i wasnt able to find them on Roe. they have similar look to Vishay PAC ressitors at best. but they are not the same. Can anoyne tall which company logo is printed on theese resitors?
thanks in advance..
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Old 17th October 2010, 06:17 PM   #4
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on our railroad we use 40-80 watt resistors for heat sources in gate motors ect to fight frost.
most have that stamp(triangle ohm sym)and name ohmite. might not be the right spelling. however might be sub contracted to a subcontractor ect..... so not sure if its helps.
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Old 17th October 2010, 09:18 PM   #5
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Thanks I surfed throught ohmite website also its production on farnell with photos but no resitor have theese stamps neither look similar
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Old 17th October 2010, 09:25 PM   #6
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I checked around, and those are "Resista" resistors, at least the one with the Omega symbol in the triangle for a logo. Roederstein was bought out by Vishay a while back, so those resistors aren't made any more, or maybe in a different form by Roederstein/Vishay subsidiary Draloric.
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Old 17th October 2010, 09:50 PM   #7
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wrenchone, thanks again , I already searched yesterday for roedernstein resista, no results not even datasheet or pic.. seems i will need desolder nearly 200 resitors and solder in all news ones , unless i find similar resistor with same thermo behaviuor which I believe is nearly mission imposible

anyways thanks for help

hm... enetred draliric and i see something very similar from apearance

VISHAY DRALORIC|AC05000002208JAC00|RESISTOR, 5W, 5%, 2R2 | Farnell Ireland

will check theese out
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Old 17th October 2010, 10:20 PM   #8
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That's probably as close as you're going to get these days.
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Old 17th October 2010, 10:34 PM   #9
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I will buy few and desolder few working genue and will measure in same paraleled chain to see if they behave similar under temperature changes. what is surprise that resitors i need is mountened in 2008 years manufactured product and I opened few others -they use the same resitors. either manufacturer like so much NOS resitors or they still are available. all other parts seems new and fresh brands..
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Old 17th October 2010, 11:29 PM   #10
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I think Ohmite is correct.
Anyway those are very probably MOX (metal oxide film) resistors!
From the size I`d guess they are about 4W.
If so, VITROHM PO591-0 could be a replacement.
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