I have this capacitor in a rectangular package with two rows of three dots: black brown green yellow gold brown
The other side reads EL-MENCO upside down, so the dots may be upside down.
The paint is in a recess, where all but the the first two (black brown) are circular. Those are a circle with a point to the right.
How must those color codes been read?
It always helps if you known the answer: the capacity is measured approximately 140 pF.
Groetjes Albert
Here is a place to look;
The black dot at the top left tells what code. The next two are the value using the same code as the resistors. The brown and green is 15 and the multiplyer (numberof zeros) is the bottom right brown is 1.
So you have a 150 pf capacitor.
The gold is the tollorence of 5 %
The capacitors are usually 500 volts.
Google "obsolete mica codes".
Some 6-dot codes involve reading clockwise.
123 6541 - type
2 - 1st figure 3 - second figure 4 - multiplier 5 - tolerance 6 - environment/aqlRL
A blast from the past. This sounds like the old molded rectangular mica capacitor code:
.
Black-Brown-Green -> 015 times Multiplier
Yellow-Gold-Brown -> Voltage-Tolerance-Multiplier (400 Volts, +/- 5%, times 10)
So, this is a 150 pF 400-Volt, 5% (mica?) capacitor.
140/150= 0.9333, so the error is 6.7%, only slightly out of the 5% claim.Joe Gwinn
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