what kind of resistor is this?

pchw · 2nd February 2007, 10:06 PM

I got some of these 10K 1% resistors, but I never saw anything like that. It has a hole in the middle. I wonder what is the power rating and type (carbon, metal, ceramic etc)? Can someone identify it?

Thanks,

Wavebourn · 2nd February 2007, 10:11 PM

Quote:

Originally posted by pchw
I got some of these 10K 1% resistors, but I never saw anything like that. It has a hole in the middle. I wonder what is the power rating and type (carbon, metal, ceramic etc)? Can someone identify it?

Thanks,

I would cannibalize one to see what is inside, you are happy if a metal foil or wire.

frank754 · 2nd February 2007, 10:15 PM

I just ordered a few that look similar, mine are Caddock high-power, low tolerance "film resistors", they generally are in the low resistance range, but can go up to 100k or so, and are a premium price, like $3-4 each sometimes.
They sort of look like flat transistors but a bit larger, and are fairly high precision, some have flat PCB type leads (or socket leads).

pchw · 2nd February 2007, 10:31 PM

Yeah, they do have a look of transistor.
The markings are 10K ohm (the symbol) 1% CE292E. The packaging is kind of like thick plastic or epoxy shell. The diameter is about 20% bigger than a pencil. I google searched CE292E but turned up nothing. Do you think it is safe to use them as 1/2W resistors?

nhuwar · 2nd February 2007, 10:35 PM

If I were to bet I would say it's a copper coil resistor by it's shape.

Nick

frank754 · 2nd February 2007, 11:01 PM

Yes, that's another thing I neglected to mention, the reason some of these are so large is that they can handle often 15 watts, and some are rated up to 100 watts. I can't tell what yours are from what you say, but the ones I ordered say "MP925 100K 1% R" and are rated at 25 watts, the dimensions are .4" x .6" x 1/10" thick, and cost me about $3.50 each, so big performance in a small package.

cliffforrest · 2nd February 2007, 11:10 PM

Come on guys!

It is a wirewound ( probably manganine) precision resistor.

Designed for stability, not high power or any other audio freakiness!

I have LOTS of similar.

jlsem · 2nd February 2007, 11:17 PM

Quote:

It is a wirewound ( probably manganine) precision resistor.

Probably a 1/4 to 1/3 watt and no more than 300v. Looks like RB53 size.

John

frank754 · 2nd February 2007, 11:21 PM

The ones I got were from Allied, as I had a hard time finding a certain spec I needed, and these are 25 watts. precison, are are that small:

I was just guessing on his.

pchw · 2nd February 2007, 11:38 PM

I wish they were the same type, Frank

Here is another picture, Cliff, do they look like manganine?
If they are only 1/3W at most, then they are probably not much of any use, what a bummer.

2nd February 2007, 10:31 PM	#4
pchw diyAudio Member Join Date: Apr 2006 Location: Fremont, California	Yeah, they do have a look of transistor. The markings are 10K ohm (the symbol) 1% CE292E. The packaging is kind of like thick plastic or epoxy shell. The diameter is about 20% bigger than a pencil. I google searched CE292E but turned up nothing. Do you think it is safe to use them as 1/2W resistors? __________________ - Fred -

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2nd February 2007, 10:15 PM	#3
frank754 diyAudio Member Join Date: Jan 2007	I just ordered a few that look similar, mine are Caddock high-power, low tolerance "film resistors", they generally are in the low resistance range, but can go up to 100k or so, and are a premium price, like $3-4 each sometimes. They sort of look like flat transistors but a bit larger, and are fairly high precision, some have flat PCB type leads (or socket leads).

2nd February 2007, 10:35 PM	#5
nhuwar diyAudio Member Join Date: Jan 2007 Location: Tomball Texas	If I were to bet I would say it's a copper coil resistor by it's shape. Nick

2nd February 2007, 11:01 PM	#6
frank754 diyAudio Member Join Date: Jan 2007	Yes, that's another thing I neglected to mention, the reason some of these are so large is that they can handle often 15 watts, and some are rated up to 100 watts. I can't tell what yours are from what you say, but the ones I ordered say "MP925 100K 1% R" and are rated at 25 watts, the dimensions are .4" x .6" x 1/10" thick, and cost me about $3.50 each, so big performance in a small package.

2nd February 2007, 11:10 PM	#7
cliffforrest diyAudio Member Join Date: Sep 2004 Location: UK	Come on guys! It is a wirewound ( probably manganine) precision resistor. Designed for stability, not high power or any other audio freakiness! I have LOTS of similar.

2nd February 2007, 11:21 PM	#9
frank754 diyAudio Member Join Date: Jan 2007	The ones I got were from Allied, as I had a hard time finding a certain spec I needed, and these are 25 watts. precison, are are that small: I was just guessing on his.

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