Need help to identify this component

Eugenehifi · 28th February 2013, 02:33 AM

Hi guys,

I am in the process of recapping the capacitors on my vintage preamp that is over 20 years old. I come across a component in light blue color (see the pictures) and I am not sure it is a capacitor or not. If it is, can someone tell me what kind of capacitor it is and the value of capacitance of it so that I can get a replacement part.

On the component, it mark 1000, 160, +- 2.5% and M6.

Thank in advance

doctordata · 28th February 2013, 03:40 AM

Looks like a Styroflex or Mial polysterene cap , 1000 pF / 160V 2,5 %
very stable cap , won't need replacing .

Cheers ,

Rens

AuroraB · 28th February 2013, 06:16 AM

1000 pF styroflex.....probably Roederstein........
have some leftovers.... just wonder where they are....

Eugenehifi · 28th February 2013, 11:25 PM

Thank you. One less component to worry about

Jay · 1st March 2013, 12:47 AM

Only electrolytic (blue one) that might need replacing. But 20 years is not very old and they must be usable especially if the voltage rating is not anywhere near applied voltage (I guess by looking at the opamp that the caps operate below 18V so the caps might be rated 25V or 16V).

The round blue one is a tantalum, may be on the CCS. The good thing about it is the small size, and many power supply literature suggest this kind of cap, but I prefer to stay away from them.

The brown one is probably 100nF (marked 104) used for power supply decoupling. They will work forever, but I prefer different kind of cap for this purpose (for best sound).

What is the opamp? If it is 20 years old, the specs of the opamp must be very bad. Can be 741. Good vintage ones may use 301/201/101. But you seem to have new Wima (MKS?) there. Cannot be too old (or may be you have replaced the original one).

Eugenehifi · 1st March 2013, 06:58 PM

Jay,

This is the preamp I am talking about.

28th February 2013, 03:40 AM	#2
doctordata diyAudio Member Join Date: Apr 2010 Location: Brisbane	Looks like a Styroflex or Mial polysterene cap , 1000 pF / 160V 2,5 % very stable cap , won't need replacing . Cheers , Rens __________________ If you measure, you know; if you guess, you don't

28th February 2013, 06:16 AM	#3
AuroraB diyAudio Member Join Date: May 2001 Location: Norway, -north of the moral circle..	1000 pF styroflex.....probably Roederstein........ have some leftovers.... just wonder where they are.... __________________ While the Lie leapt from Bagdad to Constantinopel, the Truth was still looking for it's sandals!

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28th February 2013, 11:25 PM	#4
Eugenehifi diyAudio Member Join Date: Apr 2012	Thank you. One less component to worry about

1st March 2013, 12:47 AM	#5
Jay diyAudio Member Join Date: Feb 2003 Location: Jakarta	Only electrolytic (blue one) that might need replacing. But 20 years is not very old and they must be usable especially if the voltage rating is not anywhere near applied voltage (I guess by looking at the opamp that the caps operate below 18V so the caps might be rated 25V or 16V). The round blue one is a tantalum, may be on the CCS. The good thing about it is the small size, and many power supply literature suggest this kind of cap, but I prefer to stay away from them. The brown one is probably 100nF (marked 104) used for power supply decoupling. They will work forever, but I prefer different kind of cap for this purpose (for best sound). What is the opamp? If it is 20 years old, the specs of the opamp must be very bad. Can be 741. Good vintage ones may use 301/201/101. But you seem to have new Wima (MKS?) there. Cannot be too old (or may be you have replaced the original one).