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Old 1st April 2011, 04:00 AM   #1
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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
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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
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A - Philips Polyester Capacitor - 470nF - 630 Volts - 10% Tol.

B - Philips Polyester Capacitor - 22nF - 250 Volts - 10% Tol.
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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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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 online now Elvee  Belgium
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Quote:
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:
"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?
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Old 2nd April 2011, 07:12 PM   #7
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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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Old 2nd April 2011, 08:04 PM   #8
Apex Jr is offline Apex Jr  United States
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"F" is an RS 2B Wire wound resistor

Steve
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Old 3rd April 2011, 07:09 AM   #9
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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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