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Mystery Parts Challenge
Mystery Parts Challenge
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Old 1st April 2011, 04:00 AM   #1
ravix is offline ravix
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Default Mystery Parts Challenge

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"
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Old 1st April 2011, 04:21 AM   #2
sofaspud is offline sofaspud  United States
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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.
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Old 1st April 2011, 04:29 AM   #3
Tube_Dude is offline Tube_Dude  Portugal
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A - Philips Polyester Capacitor - 470nF - 630 Volts - 10% Tol.

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

Last edited by Tube_Dude; 1st April 2011 at 04:36 AM.
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Old 1st April 2011, 06:45 AM   #4
Atilla is offline Atilla  Norway
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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.
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Old 1st April 2011, 07:42 AM   #5
Mooly is offline Mooly  United Kingdom
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Mystery Parts Challenge
A and B,
I always knew them as Mullard C280 series, also well known as "liquorice allsorts" or "candy stripe" capacitors.
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Old 1st April 2011, 08:00 AM   #6
Elvee is offline Elvee  Belgium
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Originally Posted by ravix View Post
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:
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Old 2nd April 2011, 07:12 PM   #7
indianajo is offline indianajo  United States
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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.
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Last edited by indianajo; 2nd April 2011 at 07:33 PM.
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Old 2nd April 2011, 08:04 PM   #8
Apex Jr is offline Apex Jr  United States
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Mystery Parts Challenge
"F" is an RS 2B Wire wound resistor

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Old 3rd April 2011, 07:09 AM   #9
kcollins is offline kcollins  United States
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"G" Wima MKC4 22.5mm Metalized Polycarbonate

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