Need help identifying Ceramic Capacitor

[paceuser]

I have the following ceramic capacitor that I would like to identify. I need to purchase another one like it or an equivalent. Here is the text on the capacitor:

Capacitor is Yellow in color. It has three lines of writing:

VF05
0221
TK RU (RU = Underwriter's Laboratories Logo)

If anyone knows an equivalent on fleabay please let me know. Thank you I appreciate your help.

[stj]

Re: Need help identifying Ceramic Capacitor

something looks wrong, it may be a MOV not a cap
post a photo

[paceuser]

Re: Need help identifying Ceramic Capacitor

Thank you for your response. I have attached the picture.

[budm]

Re: Need help identifying Ceramic Capacitor

It is MOV/Varistor (Designated as VAR1). 5D = 5 mm Dia., 221 = 220V
http://www.xiaheonline.com/MOV-5D-Series.html
Why do you think it is bad? It is not blown.
What kind of device are you working on and what is it not doing?

[paceuser]

Re: Need help identifying Ceramic Capacitor

Thank you! It has no resistance and no capacitance. How do I test if it is working? Which would be the correct replacement on that link? It is on a light motion sensor.

[budm]

Re: Need help identifying Ceramic Capacitor

Thank you! It has no resistance and no capacitance. How do I test if it is working? Which would be the correct replacement on that link? It is on a light motion sensor.

There is nothing wrong with it, it will conduct when Voltage exceed the rating then it conducts into low resistance, the capacitance is really low in pF range. It is a protection device, it is not needed for the circuit to operate. Look some where else for problem as to why your device not working.
If you want help troubleshooting, you need to up load good clear pictures of the whole top side and bottom side of the boards. What kind of testing have you done so far?

[paceuser]

Re: Need help identifying Ceramic Capacitor

Thank you budm for the explanation! So far I have tested the capacitors and they all seem to be good. I am attaching some pictures of the board. Thank you I appreciate your help.

[stj]

Re: Need help identifying Ceramic Capacitor

you never said what the symptoms are.

if this is mains powered - check that redish polypropylene cap

[R_J]

Re: Need help identifying Ceramic Capacitor

Looks like a motion detector board from a outdoor light. (Heath/Zenith SH-5597 or similar) If I'm wrong I know "someone" will say I'm wrong.

[paceuser]

Re: Need help identifying Ceramic Capacitor

you never said what the symptoms are.

if this is mains powered - check that redish polypropylene cap

Sorry, the symptoms are that at night, the lights no longer come on. Yes, its a Heath/Zenith security/motion light.

[paceuser]

Re: Need help identifying Ceramic Capacitor

you never said what the symptoms are.

if this is mains powered - check that redish polypropylene cap

The red polypropylene capacitor has .73 microfarad. Not sure if that is what it should have.

[petehall347]

Re: Need help identifying Ceramic Capacitor

whats going on next to the red wire where it goes through a hole ?

[stj]

Re: Need help identifying Ceramic Capacitor

The red polypropylene capacitor has .73 microfarad. Not sure if that is what it should have.

what does it say on the sides?

[paceuser]

Re: Need help identifying Ceramic Capacitor

Looks like a motion detector board from a outdoor light. (Heath/Zenith SH-5597 or similar) If I'm wrong I know "someone" will say I'm wrong.

Close! It says "SL-5318-A" on a sticker and on the metal plate it says "SL-5316-A".

[paceuser]

Re: Need help identifying Ceramic Capacitor

whats going on next to the red wire where it goes through a hole ?

That red wire is going through the hole to one of the two lights.

[paceuser]

Re: Need help identifying Ceramic Capacitor

what does it say on the sides?

It says :

564K
250V

[stj]

Re: Need help identifying Ceramic Capacitor

so off-board it should meter around 560nF

[paceuser]

Re: Need help identifying Ceramic Capacitor

so off-board it should meter around 560nF

I have not removed it yet but on board it measures .73 microfarad.

[stj]

Re: Need help identifying Ceramic Capacitor

well combined parts are 730nF - that's why you lift one end to test them.

[paceuser]

Re: Need help identifying Ceramic Capacitor

I removed it, it has .57 microfarad.