Could somebody tell me what this item is please. It is black, circular about 6mm diameter and 2mm thick in this case. It has two leads which are soldered to the two opposing flat sides. It is part of a solid state ignition system
1 Answer
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It is black, circular about 6mm diameter and 2mm thick in this case.
If it looks like one of these: -
...then it's probably a disc thermistor of some type but, it could also be an MOV transient voltage clamper or maybe an inrush current limiter like this: -
It's still a disc thermistor as per the top picture but more modern devices fully encapsulate the soldered lead to prevent corrosion.
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\$\begingroup\$ Aha thank you, an NTC, it's not got encapsulated leads which rather foxed me. Thanks Andy \$\endgroup\$ Commented Mar 14, 2021 at 10:38
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\$\begingroup\$ @perplexed do you know what to do next to close down the question or are you waiting for more answers? \$\endgroup\$– Andy akaCommented Mar 14, 2021 at 10:42