Electronic – Identifying SMT element 331K

capacitoridentificationremote controlrepairsurface-mount

teh element
I am trying to repair a remote from a car lock. The symptoms are that a red led is lit longer than usual after button press and no respond from car lock. It works sometimes. The battery and microswitches are replaced. All elements are resoldered. On the other side of the board is a tantalum capacitor. I measured it and is ok. (1uF 106)

What is this element on the right? It has 1Ω resistance

EDIT:
I desoldered the similar looking element which on the picture is still soldered. It says 560J and is totally short: 0Ω.

On the other side of the board is a capacitor similar looking but with a bar on the positive pole. The capacitor has 106 marking and is working.

Best Answer

If this were a capacitor, I'd say by the shape and size that it have to be tantalum. However, tantalum caps are polarized, and this device is not. Ergo, not likely a cap.

The triangular marking at the top of the device resembles the Epcos logo:

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A quick check of Epcos shows me that they have a line of SM inductors which closely resemble your part, in both shape and markings.

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This data sheet says that the line 331K represents the inductance and the bottom line is a date code.

This note explains the code in more detail: K is a tolerance code (+/- 10%), and depending on the size of the part, the inductance is in either microhenries or nanohenries. I don't think your part is actually 330 microhenries given its size.

I think you have a 330nH EPCOS SM inductor. QED