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This may be a dumb question, but where does the PCB make a connection with the signal ground on this BNC connector? All I see is the signal pin that is soldered on (via solder cup) and no where is there the possibility to solder to a reference ground. The part is Digikey PN A32342-ND

Thanks

enter image description here

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  • \$\begingroup\$ I recall using a lockwasher/solder lug with those connectors - don't recall if the lug came with the connector or was a separate order. \$\endgroup\$ Jun 9, 2020 at 19:41

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Okay, that's a grounded bulkhead connector. The housing may be connected at many places to the PCB (if any), and probably is if it's an RF circuit.

AMP aka Tyco aka TE offers similar types with and without a toothed washer to add a a wire to the panel.

enter image description here

Insulated bulkhead connectors have two solder terminals.

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It doesn't necessarily do – not all BNC applications are so high in frequency that a gap matters, so maybe, if present at all, the outer conductor (that's not necessarily ground!) is just connected to the chassis somewhere else, or soldered to a brass washer that gets fastened with the nut.

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