Capacitor Marking Question (Asteroids) - Help...

kiphartzell

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For those of you who are component marking experts.....

I need to replace a mylar cap that has one leg broken on a Asteroids board (location C69). The manual calls for a .1 uf, 10% 100v mylar capacitor and the original caps (4 of them) on the board have the following markings ".1K 50/100". I assume the .1 is in microfarads?!?, K=10% and what does 50/100 mean (100 maybe max volts, but what about 50)?

The question I really have is are the following two also .1uf caps?

This one I just received from Bob Roberts as a .1uf cap (K=10%, 100v) marked "100K 100v" <- this almost seems incorrect.

And a second one that I just dug up which uses the IEC code and should also be a .1uf cap (K=10%,max=100v) marked "104K 100v".

Please educate me, Thanks.
 
The 104 number means.....10 with 4 zero's after it.....thus 100000. This is a picofarad measurment. So.....100,000 picofarads = .1 microfarads (which is what your manual is calling for).

The cap marked 100K is using a slightly different marking to mean the same thing. A lot of times (but not always), a K means, multiply by 1000. So.....100K = 100 x 1000.....which = 100,000. This is also in picofarads.

Confused yet?:D

Edward
 
Thanks! Resistors are so much easier -> "Bad Boys Rape Our Young Girls But Violet Gives Willingly". Unfortunately, nothing easy about ceramic and mylar caps! So I should be good to go for this one, but still need to read up more on the different possible markings. The K as multiplier verses K for tolerance seems to be the biggest offender for creating confusion!
 
Thanks! Resistors are so much easier -> "Bad Boys Rape Our Young Girls But Violet Gives Willingly". Unfortunately, nothing easy about ceramic and mylar caps! So I should be good to go for this one, but still need to read up more on the different possible markings. The K as multiplier verses K for tolerance seems to be the biggest offender for creating confusion!

Give yourself time.....they also (sometimes) use color codes, just to give it that extra notch of WTF.

Edward
 
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