I've encountered this resistor R12
while trying to understand how a board is working. It seems to be much bigger than the other SMT components and basically just looks like a flat metal tile without symbols.
Do these kind of resistors have a specific name, or present a certain best practice for appliances?
My assumption is that this might be a dedicated shunt for a higher current, but the lack of any symbols got me confused.
Update to provide more context
The device being examined is a socket extension that can measure the current going through the mains. Besides this resistor, the component I wasn't able to identify was this little guy:
Best Answer
Hard to tell without a bit more context, but it could be a "zero ohm resistor" aka "link" or "jumper". Basically not acting as a resistor, but given a R designation nonetheless. These can be used where the designer isn't sure if a resistor is needed, and wants to try different options, where one board is used to make two slightly different products, or just to connect two traces where it was too hard to route without it.