Once again the component marking question. Some little dipped inductors marked "8R2K" Is it possible to tell the inductance from that? Or any other properties? Photo:
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Inductor marking 8R2K
Dec 21, 2005
3 Replies
Probably 8.2 microhenries
Thanks. Does the 'R' or the 'K' mean anything?
The "R" is the decimal point:
8R2 = 8,2 R82 = 0.82Resistors quoted in ohms, inductors in microhenries, capacitors in picofarads
The "K" is tolerance;
F - +/-1% G = +/-2% J = +/-5% K = +/-10% M = +/-20%
Pretty standard component marking these days.
Watch out for things like "R82K". At a first glance you think "82K ohms". It's not, it's 0.82 ohms, 10%
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)
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