It is used on a small board RFID antenna circuit based on the TMS3705:
At the first check it seems to be a 0 ohm resistor, but the dimension 4x4mm its strange.
Any ideas?
L.
Electronic – How to identify this particular SMD component
componentssurface-mount
Related Solutions
It's a resistive hygrometer (or simply put: a humidity sensor). The resistance across the contacts varies depending on the relative humidity of the air it is suspended in.
Due to the antenna design, the system appears to be a LF RFiD system (125kHz or 134kHz).
- The chip you are searching the reference if a LF RFiD transceiver.
- The package is a SOIC-8.
Maybe your component is a MELEXIS MLX90109. The pinout seems to match. (antenna coil position).
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Best Answer
It is a "zero ohm link".
You can find them listed in the resistors section of a vendor's parts catalog.
It is typically used to turn on or off configuration options on the circuit board. The "0" marking is intended to make this stand out among a group of actual resistors.
They come in many sizes and even through hole versions. It is possible that this one is large in order to make hand-soldering easier.