Questions tagged [metal-film]

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Differences in Metallized Polypropylene Film Capacitors

I have two capacitors, and they are both Metallized Polypropylene Film Capacitors, but they look pretty diferent to me, one is red, a little bit shiny with round corners like this: and the other is ...
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1answer
23 views

Difference between IRMS and Peak Current on Capacitor Rating

Background: I was looking at a spec sheet for a round metallized polypropylene film capacitor that gave two different current values for the "IRMS at 100 kHz -70 deg C" and the "Peak Current" I'm ...
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0answers
39 views

Must film capacitors be derated according to the voltage applied? [duplicate]

I know electrolytic capacitors must be derated according to the applied voltage, with some losing a significant part of their nominal value at high voltages. Is it a similar case with film capacitors?...
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2answers
232 views

Is there a thin metal film that I can solder wires to?

For instance, I bought some Dremel bits and inside the packaging were these small extremely thin pieces of metal film. Not sure what they were used for or what metal they were made out of. It ...
3
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1answer
146 views

Is it safe to use an Y2 Capacitor where an X capacitor used to be?

Is it safe to use an Y2 Capacitor where an X capacitor used to be? I mean Y should be safer right? So Y2 where X should be is OK, but not the other way around, right?
3
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1answer
565 views

Failure of Metallized Film Capacitors

I have the following : Metallized film capacitor. I read in some papers that MFC are protected against short-circuit with a self healing. Self-healing is a phenomenon where in the event the ...
5
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3answers
1k views

What happens when a power metal film resistor is exposed to higher power?

What is the worst thing that could happen if a power metal film resistor rated for 2W is exposed to 15W due to a short in the circuit? I have seen smoke being emitted but switched off the power supply ...
0
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1answer
646 views

Difference in Metal Film and Carbon Film

Hey all I have a WS2812B RGB LED strip that I am wanting to use with an Arduino. The directions HERE state that it's best to use a Capacitor and register in order to have smooth operation. So I went ...
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5answers
3k views

When to use film capacitor

I've bought a bunch of film type capacitor as they were pretty cheap and I thought it was a good idea to get some and test them. (set here) So I'm trying to figure out what's the specific application ...
6
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1answer
6k views

Ceramic vs Metal Film Capacitor

I was working on building an induction furnace. What would be the difference in using a metal film capacitor or a ceramic capacitor with similar ratings and values. From what I know, the ceramic ...