What component is this?

[iceze]

I need help identifying this component. I'm try to troubleshoot a simple pcb armed with my dmm. I've seen it loads of times but I don't know what its called!



Its the large brown component behind the blue resistor.

iceze

[smargh]

Radial film capacitor?

http://www.capacitors.net.cn/filmcapacitors.htm

[Jay]

its an 82K cap probably EF8 on the above page.

[iceze]

Thanks guys.

Any ideas what the markings mean(farads?)? ( 824k 400V )

[TAKTAK]

824k =

8 2 0000 pF with tolerance of +/-10%

the capacitor markings are similar to resistors but using numbers instead of colour bands

so the first number in the code (in this case 8) gives the first value
the second number gives the second number of the value (in this case 2)
and the third number gives the multiplier (in this case 4)
and the letter on the end signifies the tolerance of the cap (which in this case is 'k' which means +/-10%)

but caps codes are measured in pico Farads...

so the value is 820000 pico Farads
which = 820 nano Farads (nF)
or 0.82 mF (micro Farads)
or 0.00082 F (Farads

but sometimes you just get the pure value stamped on.. such as 4n5 which means that it is a 4.5 nano Farad cap (the position of the letter shows the decimal point)

caps often have the material stamped on them aswell

Marking  ¦	Material

MKT 	Metallised Polyester (PETP)
MKC 	Metallised Polycarbonate
KT 	Polyester Film / Foil
KS 	Polystyrene Film / Foil
KP 	Polypropylene Film / Foil
MKP 	Metallised Polypropylene

Tolerance Code ¦ Tolerance

C 	+/- 0.25pF
D 	+/- 0.5pF
F 	+/- 1%
G 	+/- 2%
J 	+/- 5%
K 	+/- 10%
M 	+/- 20%
Z 	- 20% +80%

[iceze]

Great info. Didn't know capacitors had markings similar to capactors. Always thought that they only had the face value. Thanks!