Mystery Parts Challenge

ravix · 1st April 2011, 04:00 AM

I have a few parts in my Junk Box which I am not sure about. I know the function of some of these (capacitor, resistor, etc), but I am not sure about the type.

I am not as interested in exact values because I can measure them. I am more interested in the qualities and features of each part (ie: poly film capacitor vs tantalum vs electrolytic, etc).

Can any of you Gurus help me out?

Info on each part:

A. About 3/8" thick. No markings other than the colors.
B. No Markings
C. Very round. Marked with: "47-16", "++2" (The 2 is enclosed in a circle)
D. Very thin. Marked with: "K75U", "685Z", "50V"
E. About 1/4" thick. Marked with "WIMA", "0.1", "250-", "F8"
F. Obviously a resistor, but what kind? Markings: "8412", "Dale", "RS-2B", "4.5K 1%", "3W"
G. About 3/8-1/2" thick. Markings: "3,3uF 100 - 5% A D5", "WIMA MKC4-SV21"
H. Very thin. Shiny. Markings: "1979" (perhaps a date code?.. ) "LIBERTY"
I. Square (same thickness and width). Markings: "50", "1826", "9510". On top the value is shown as "3,3K"

sofaspud · 1st April 2011, 04:21 AM

A. I've never seen anything like it
B. ditto
C. 0.47uF 16V tantalum capacitor, the + shows polarity
D. 6.8uF 50V capacitor (not sure if it's ceramic or not)
E. 0.1uF 250V capacitor (polyester film?)
F. 4.5k 1% 3W resistor
G. 3.3uF 100V capacitor (polyester?)
H. 1979's equivalent of 2011's dollar
I. 3.3k ohm power resistor ??
A & B look like mylar capacitors but I'd need to find a cap color code chart to guess a value.

Tube_Dude · 04:36 AM

A - Philips Polyester Capacitor - 470nF - 630 Volts - 10% Tol.

B - Philips Polyester Capacitor - 22nF - 250 Volts - 10% Tol.

Atilla · 1st April 2011, 06:45 AM

E - WIMA polyester pusle cap. 0,1uF, 250V
G - pretty well Marked WIMA cap, check their site for details. I think metalized polyester cap.
I - looks like my Vishay Roederstein 1uF caps.

Mooly · 1st April 2011, 07:42 AM

A and B,
I always knew them as Mullard C280 series, also well known as "liquorice allsorts" or "candy stripe" capacitors.

Elvee · 1st April 2011, 08:00 AM

Quote:

Originally Posted by ravix

I am more interested in the qualities and features of each part (ie: poly film capacitor vs tantalum vs electrolytic, etc). "

The followings pics show a variety of capacitors with their tan delta value:
"Best" film cap you've never heard of?
"Best" film cap you've never heard of?
"Best" film cap you've never heard of?
"Best" film cap you've never heard of?
"Best" film cap you've never heard of?

indianajo · 07:33 PM

D is an Aerovox gold 50V ceramic cap. 685 is 68x10^5 pf, or 6.8 uf. Z5U is a type of dielectric, a more temperature stable one than CoG. Z is a tolerance, +80-20%. About a $7 cap, if you can find one stocked. I've got 4.7 uf and 10 uf COG's.

Apex Jr · 2nd April 2011, 08:04 PM

"F" is an RS 2B Wire wound resistor

Steve

kcollins · 3rd April 2011, 07:09 AM

"G" Wima MKC4 22.5mm Metalized Polycarbonate

"I" Vishay Roederstein MKT 1826 5mm Stacked Film (Metalized Polyester)

1st April 2011, 04:29 AM	#3
Tube_Dude diyAudio Member Join Date: Mar 2002 Location: Aveiro-Portugal	A - Philips Polyester Capacitor - 470nF - 630 Volts - 10% Tol. B - Philips Polyester Capacitor - 22nF - 250 Volts - 10% Tol. __________________ Jorge Last edited by Tube_Dude; 1st April 2011 at 04:36 AM.

1st April 2011, 07:42 AM	#5
Mooly diyAudio Member Join Date: Sep 2007	A and B, I always knew them as Mullard C280 series, also well known as "liquorice allsorts" or "candy stripe" capacitors. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

2nd April 2011, 07:12 PM	#7
indianajo diyAudio Member Join Date: Jan 2010 Location: Jeffersonville, Indiana USA	D is an Aerovox gold 50V ceramic cap. 685 is 68x10^5 pf, or 6.8 uf. Z5U is a type of dielectric, a more temperature stable one than CoG. Z is a tolerance, +80-20%. About a $7 cap, if you can find one stocked. I've got 4.7 uf and 10 uf COG's. __________________ Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,SP2-XT's, T-300 HF Projs, Steinway console, Herald RA88a mixer, Wurlitzer 4500 Last edited by indianajo; 2nd April 2011 at 07:33 PM.

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1st April 2011, 04:21 AM	#2
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio TX	A. I've never seen anything like it B. ditto C. 0.47uF 16V tantalum capacitor, the + shows polarity D. 6.8uF 50V capacitor (not sure if it's ceramic or not) E. 0.1uF 250V capacitor (polyester film?) F. 4.5k 1% 3W resistor G. 3.3uF 100V capacitor (polyester?) H. 1979's equivalent of 2011's dollar I. 3.3k ohm power resistor ?? A & B look like mylar capacitors but I'd need to find a cap color code chart to guess a value.

1st April 2011, 06:45 AM	#4
Atilla Soldering Gun Fanatic diyAudio Member Join Date: Jul 2008	E - WIMA polyester pusle cap. 0,1uF, 250V G - pretty well Marked WIMA cap, check their site for details. I think metalized polyester cap. I - looks like my Vishay Roederstein 1uF caps.

2nd April 2011, 08:04 PM	#8
Apex Jr diyAudio Member Join Date: Jun 2002 Location: Torrance, Calif	"F" is an RS 2B Wire wound resistor Steve

3rd April 2011, 07:09 AM	#9
kcollins diyAudio Member Join Date: Jun 2005 Location: Los Angles, CA	"G" Wima MKC4 22.5mm Metalized Polycarbonate "I" Vishay Roederstein MKT 1826 5mm Stacked Film (Metalized Polyester)

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