Can anyone tell me what are these smt devices. Especially the one with square drawn at centre
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Jayant Nagle
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Measure the resistance of them (in circuit) with a DMM. They should all be zero ohms. In which case they are zero ohm links. – Warren Hill Jun 04 '20 at 12:37
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They are zero ohm links. Maybe mainly used as jumpers on this single sided board to allow for a track to run under them, but they have other uses, see What is the usage of Zero Ohm & MiliOhm Resistor?
Martin
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