Solder-Clamp Cable Attachment (Semi-Rigid Cable)

For BNC and larger connectors: This attachment method is similar to the V-Groove type used for flexible cable, but is adapted to use with semi-rigid cable by replacing the braid-clamp ferrule with a ferrule designed to be soldered to the jacket (outer conductor) of semi-rigid cable. This design allows right-angle or chassis-mounted connectors to be re-oriented after cable attachment to easily conform to system layout.

The cable is stripped, and the ferrule is soldered to the cable jacket before soldering the contact to the cable conductor. This allows for trimming the cable dielectric after soldering the jacket, eliminating any dielectric extrusion that may occur during jacket soldering. Captive contacts (as shown) are highly recommended for connectors used with semi-rigid cable.

SMA and other small-size connectors feature simplified solder-clamp assembly for semi-rigid cable which incorporates a reduced parts count and captive contact. This design allows right-angle or chassis-mounted connectors to be re-oriented after cable attachment to easily conform to system layout.

The cable is stripped and inserted into the backnut / insulator / contact assembly, and the connector contact soldered to the cable conductor. The cable jacket (outer conductor) is then soldered to the backnut. The prepared cable is inserted into the body assembly and the backnut tightened. The captive contact provides consistent axial contact location within the interface, and prevents movement of the contact from cable flexure or temperature changes after assembly.

Some SMA connectors with solder-clamp cable attachment are qualified to MIL-PRF-39012, Category B (non-field replaceable) and Category E (MIL-defined cable stripping dimensions).


Click to view other semi-rigid cable attachment types: Collet | Direct Solder

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