12G-SDI Coax Cable Assembly, BNC to BNC
A 12G-SDI cable built in 75-ohm precision coax, BNC to BNC, to the reach your rack needs. Return loss is stated with the shipment, not promised up front.
Last updated: 13 September 2026
Overview
A 12G-SDI cable assembly has one job: move an SDI signal from camera to CCU or rack to monitor without the eye closing. Reach depends on the coax construction, the BNC termination quality and the bend discipline behind the panel, so we build to the reach you state and report return loss with the shipment instead of promising a generic figure.
Key Specifications
| Connector A | BNC male, 75 ohm, gold or nickel plating |
|---|---|
| Connector B | BNC male, 75 ohm |
| Impedance | 75 ohm precision SDI coax |
| Jacket | Flexible PVC or low-friction PUR, build to order |
| Length | OEM build to the reach you state |
| Return loss | Stated for the build, measured per order |
Construction and Materials
The assembly uses a 75-ohm precision coax core terminated to 75-ohm BNCs, with the crimp or solder geometry held constant between orders. Boots are overmolded on tooling cut in our own tool room, so the bend profile at the connector can be matched to your patch layout. Longer runs use a low-loss core; we confirm the cable choice against your reach before quoting.
Typical applications for this 12G-SDI cable
- Broadcast racks, OB trucks and flypacks
- Camera-to-CCU runs on studio and ENG builds
- SDI distribution to monitors and converters
- Spares programs for touring and rental fleets
Compatibility and Fitment
BNC interfaces are 75-ohm throughout; we do not mix 50-ohm BNCs into an SDI build. If your rack uses HD-BNC or DIN 1.0/2.3 on one end, send the part numbers and we build the mixed interface as a custom assembly.
Workmanship and testing
Assembly and inspection follow IPC/WHMA-A-620 Class 3 workmanship criteria under our ISO 9001 quality management system, and every unit passes 100% continuity and pinout testing before it is packed.
Custom builds and ordering
Prototype builds start from 5 pcs and ship in 3 working days; production orders start at MOQ 500 pcs and ship 14 working days after approval. OEM and ODM builds ship under your part number and labeling, with material certificates and first-article reports available on request.
See our broadcast and pro AV cable assemblies for the wider touring-grade range.
| Connector A | BNC male, 75 ohm, gold or nickel plating |
|---|---|
| Connector B | BNC male, 75 ohm |
| Impedance | 75 ohm precision SDI coax |
| Jacket | Flexible PVC or low-friction PUR, build to order |
| Length | OEM build to the reach you state |
| Return loss | Stated for the build, measured per order |
