Contact CaptivationTypes
A captive contact is fixed within the connector body to prevent axial movement due to mechanical forces. This movement causes a decrease in electrical performance by changing the geometry of the connector interface.
Differences in the thermal coefficient of expansion between the connector dielectric and the cable dielectric (for cable connectors) or the substrate of attached circuitry (for receptacles) can also cause movement of the contact if it is not captivated.
Some captivation methods (such as epoxy captivation) also prevent radial movement of the contact.
Contact captivation methods vary with connector type—contact factory for captivation method used with specific Delta connectors.
Click on these links to see examples of contact captivation types:
Cable connectors: Non-captive | Shoulder captivation | Groove captivation
HeliGrip captivation | OneStep captivation
Receptacles: Non-captive | Shoulder captivation | Knurl captivation
Barb captivation | Epoxy captivation
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