HISTORY:
Sustainability is the name of the game! Anything (that has been tested and still functioning properly) should be repurposed creating saving in wasted Ee and reducing the poisoning our environment when items are buried in the earth at the local tip needlessly.
Never heard of Ee? It is a concept that creates a measurement of ALL things (not just electronics) that humans have made and the energy used in obtaining the raw material, processing the materials right through to a finished product and even should include the shipping of the item to the distributors/retailers.
If you would like to know more about Ee values, please take a look HERE
This electronic component is BRAND NEW, old stock and has that mystery factor!
Although part of my personal workshop spare parts, I cannot recall where this capacitor came from and ALLIED CAPACITORS rings no bells. There was an American company ALLIED RADIO but I didn't import any parts from them. I also see online a mention of an ALLIED CAPACITORS in Sydney but all links seem to be "dead" So this capacitor's origins are a mystery to me.
The method of marking the value is also confusing (for me) it is marked as MF which strictly speaking means MegaFarad, of course it is not. Perhaps they intended to use the old designation, mF but they couldn't print lower case m? This was the 1970's ~ 1980's after all.
Even that old convention of using m to denote microfarad is misleading as m commonly stands for milli e.g mA current - Ah the lack of standards can be confusing but at least these days things are a little better with MOST capacitors using u or μ
Construction of this capacitor is interesting,
There is a thicker (0.8mm) wire running through the centre of the capacitor, although this cannot be continous otherwise the capacitor would be useless! Attached at each end is a much thinner (0.4mm) wire (foil connections) - twisted on and soldered.
The first mentioned thicker wire are the termination points, but so short!
At first I thought these had been used but no, I have looked closely at those wire leads and they have not been cut nor is there any signs of previous solder.
ALLIED CAPACITORS - Polystyrene Capacitor
Part # unknown
Value: 0.1uF (or as they call it 0.1MF!) which is 100nF
Tolerance: Unknown as the only marking which could be a tolerance is H - there is no tolerance letter H! See my test results below for actual capacitor readings and conclusions.
Voltage: 50V
Axial leads
LABEL INDENTIFICATION ON THE BODY
0.1MF
50V
H
ALLIED CAPACITORS
DIMENSIONS:
Body: 18mm Length x 14mm Diameter (it's a "fatty")
Leads: 3.3mm Length x 0.8mm diameter tinned wire (barely enough for through hole PCB work but fine for point to point wiring)
COSMETIC CONDITION:
BRAND NEW
Old Stock
CLEAN
Leads are slightly dull due to oxidisation but still remain perfectly serviceable
TESTING:
My basic capacitance tester shows the value of these capacitors as
97.42nF
98.12nF
Both are reading slightly lower than the nominal value and within 3%, possibly these were offered as 5% tolerance (which should have a code J not H, which I can find no references to)
*** Where the photograph shows multiple components, this advertisement is for ONE capacitor only - not all that are shown! Seems obvious but some people actually ask me this!
