The 031-70558-12G: At 75 Ohm it is the standard impedance for video and broadcast video distribution, not the 50 Ohm common in telecom and test equipment. The 12 GHz frequency ceiling is high for a 75 Ohm BNC — most video BNCs top out around 4 GHz — so this plug handles HD-SDI and 12G-SDI signal paths without a bump at the connector. The bayonet lock is the standard BNC quick-twist; the plug ships as three pieces — connector body, crimp contact, and ferrule — ready to terminate onto the cable.

Amphenol RF BNC plug, male pin, 75 Ohm, 12 GHz, crimp termination, for Belden 4694P cable, nickel body, gold center contact, 500 mating cycles, bulk.
$13.7500Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
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Specifications
| Parameter | Value |
|---|---|
| Mounting type | Free Hanging (In-Line) |
| Connector type | Plug, Male Pin |
| Fastening type | Bayonet Lock |
| Frequency - max | 12 GHz |
| Cable group | Belden 4694P |
| Operating temperature | -30°C~85°C |
| Body material | Phosphor Bronze |
| Housing color | Silver |
| Dielectric material | Polytetrafluoroethylene (PTFE) |
| Center contact material | Brass |
| Package | Bulk |
| Includes | 3 pcs - 1 Connector, 1 Contact, 1 Ferrule |
| Impedance | 75Ohm |
| Body finish | Nickel |
| Mating cycles | 500 |
| Number of ports | 1 |
| Shield termination | Crimp |
| Contact termination | Crimp |
| Center contact plating | Gold |
Product details
Frequently asked questions
Is 031-70558-12G 50 or 75 Ohm?
That is the standard impedance for broadcast video and HD-SDI signal paths, not the 50 Ohm used in RF test equipment and telecom.
What cable is compatible with 031-70558-12G?
It is designed for Belden 4694P cable. The crimp ferrule and center contact are sized to that cable's dimensions; using a different 75 Ohm coax may not produce a reliable termination or consistent impedance through the connector.