Neutrik NBNC75BLP9 rearTWIST HD 75Ω BNC Connector
Build professional broadcast, SDI and video coaxial cables with the Neutrik NBNC75BLP9 rearTWIST HD 75Ω BNC Male Cable Connector, designed for professional 6.3mm-class 75-ohm coaxial cable.
Part of Neutrik’s professional rearTWIST HD BNC range, the NBNC75BLP9 combines true 75 Ω impedance with Neutrik’s patented rear-operated BNC locking system, precision-machined brass construction, gold-plated centre contact, PTFE insulation and professional shield-and-jacket crimp termination.
Designed around a 6.3mm cable O.D., the NBNC75BLP9 is compatible with a wide range of professional broadcast coaxial cables including:
- Belden 1505A
- Belden 4505R
- Canare L-4CFB
- CommScope 5565
- Gepco VPM2000
- Argosy Image 720
- Clark Wire CD7559 series
- Draka professional video coax
- Sommer professional video coax
- Percon VK6
It uses:
- 1.6mm square centre-pin crimp
- 6.47mm hex shield/jacket crimp
- True 75 Ω impedance
- Patented rearTWIST operation
- Standard BNC bayonet locking
- Published return-loss performance through 3 GHz
- More than 1,000 mating cycles
- Gold-plated centre contact
- PTFE dielectric
- Precision-machined brass construction
The NBNC75BLP9 is particularly suited to:
- Broadcast television
- SDI video infrastructure
- HD-SDI systems
- Professional video
- Outside broadcast
- Film and television production
- Touring video systems
- Live events
- Video patching
- Video routing
- Professional AV
- Equipment-hire companies
- Broadcast and video workshops
Professional True 75 Ω BNC Connector
The NBNC75BLP9 is designed as a true 75 Ω BNC cable connector.
Maintaining the correct characteristic impedance is essential throughout professional video systems.
The complete signal path may include:
- Coaxial cable
- BNC connectors
- Patch panels
- Routers
- Distribution amplifiers
- Converters
- Cameras
- Vision mixers
- Monitors
Impedance irregularities anywhere within that path can contribute to reflections and reduced transmission margin.
Using a genuine 75 Ω connector correctly matched to the coaxial cable helps maintain the controlled transmission characteristics expected by professional broadcast equipment.
rearTWIST HD Series
Neutrik classifies the NBNC75BLP9 within its:
rearTWIST HD BNC
range.
The connector combines professional HD electrical performance with a patented mechanical system designed specifically for dense broadcast installations.
Rather than needing to grip the front of the BNC connector body, the technician can operate the bayonet mechanism from the rear soft-touch boot.
Patented rearTWIST Operation
Traditional BNC connectors are normally connected and disconnected by gripping and rotating the front metal shell.
This can become difficult when large numbers of connectors are located close together.
Typical examples include:
- Video routers
- Patch panels
- Broadcast racks
- Vision systems
- OB trucks
- Video flypacks
- Recessed equipment panels
Neutrik’s rearTWIST system allows technicians to operate the connector from behind the BNC head.
This gives much easier access in high-density environments.
Ideal for Dense Broadcast Panels
Professional video equipment can contain dozens or even hundreds of BNC connections within a limited amount of rack space.
When conventional BNC plugs are installed side by side, there may be very little room to grip the connector body.
The rearTWIST boot creates an accessible operating point behind the connector.
This can make:
- Installation
- Patching
- Unpatching
- Rack servicing
- Cable replacement
- Troubleshooting
considerably easier.
6.3mm Professional Broadcast Coax
Neutrik specifies:
Cable O.D.: 6.3mm
for NBNC75BLP9.
This places it between smaller compact-coax connectors such as NBNC75BDD6 and larger models such as NBNC75BTU11 and NBNC75BYY11.
Connector selection should always be based on the exact coaxial cable being terminated.
Cable O.D. alone is not enough.
Professional coaxial cables can differ in:
- Centre-conductor diameter
- Dielectric diameter
- Shield construction
- Braid thickness
- Jacket thickness
even when their nominal outside diameters appear similar.
Compatible with Belden 1505A
One of the strongest search and application matches for NBNC75BLP9 is:
Belden 1505A
Neutrik specifically lists Belden 1505A as a suitable cable for this connector.
This makes the combination highly relevant to:
- Broadcast installations
- SDI patch leads
- Touring video
- Camera systems
- Rack wiring
- Production facilities
Compatible with Canare L-4CFB
Neutrik also identifies:
Canare L-4CFB
as a suitable cable for NBNC75BLP9.
This makes the connector useful for technicians and workshops standardising around professional Canare coaxial cable.
Compatible with Belden 4505R
Neutrik currently lists:
Belden 4505R
among the approved cable options.
Always confirm that the exact cable designation matches the manufacturer compatibility list before assembly.
Broad Professional Cable Compatibility
Neutrik currently lists the NBNC75BLP9 for cables including:
- Argosy Image 720
- Belden 1505A (ANH)
- Belden 4505R
- Belden 8241F
- CAE HD08370LSZH
- Canare L-4CFB
- Clark Wire CD7559-0
- Clark Wire CD7559F-0
- CommScope 5565
- Draka 0.8/3.7 AF
- Draka 755-801
- Draka 755-803
- Draka 755-804
- Gepco VPM2000
- Proel HPC 810
- Suhner S0426
- Sommer 600-0451
- Sommer 600-162(F)
- Percon VK6
For other cable types, consult the current Neutrik Cable-to-Connector Guide before assembly.
6.47mm Shield and Jacket Crimp
The NBNC75BLP9 uses:
6.47mm hex crimp
for the shield and jacket.
Neutrik identifies this as:
IEC 60803 die designation E.
The correct shield crimp is important for:
- Shield continuity
- Mechanical retention
- Strain relief
- Consistent assembly
The wrong crimp dimension can result in a loose connector or damaged cable.
1.6mm Centre-Pin Crimp
The centre contact requires:
1.6mm square crimp
according to:
IEC 60803 die designation 2.
Correct centre-contact termination is critical to professional coaxial cable construction.
Incorrect tooling can cause:
- Loose centre pins
- Poor electrical contact
- Connector damage
- Unreliable cable assemblies
Recommended DIE-BNC-PG Tooling
For Neutrik’s traditional HX-BNC crimp-tool frame, the appropriate die is:
DIE-BNC-PG
This provides:
Centre Pin: 1.6mm
Shield/Jacket: 6.47mm and 5.00mm hex positions
The 6.47mm position is the one required for NBNC75BLP9.
Current HX-R-BNC Tooling
Neutrik also lists its newer:
HX-R-BNC
crimp-tool platform.
The current:
DIE-R-BNC-PDC
includes:
- 1.60mm centre-pin crimp
- 6.47mm shield crimp
- 4.53mm shield crimp
- 4.06mm shield crimp
The 1.60mm / 6.47mm combination suits NBNC75BLP9.
Jacket Crimp Construction
The NBNC75BLP9 uses:
Jacket crimping
for cable anchoring.
Neutrik’s shield-and-jacket crimp arrangement prevents exposed grounding braid around the completed assembly.
This produces a clean professional cable while contributing to:
- Shield integrity
- Mechanical retention
- Cable support
- Strain management
More Than 30N Cable Retention
Neutrik specifies:
Cable Retention: >30 N
when the connector is correctly assembled.
Actual retention depends on using:
- Correct cable
- Correct stripping dimensions
- Correct connector
- Correct crimp dies
- Correct crimp tool
Snug-Fit Centre Pin
The connector uses Neutrik’s snug-fit centre-pin system.
The design provides tactile feedback as the centre contact is correctly seated into the connector.
This is useful for professional cable workshops where large quantities of BNC assemblies may be manufactured.
Published HD Performance Through 3 GHz
Neutrik publishes detailed return-loss performance for the NBNC75BLP9.
Up to 1 GHz
VSWR: ≤1.050
Return Loss: >32 dB
Up to 2 GHz
VSWR: ≤1.065
Return Loss: >30 dB
Up to 3 GHz
VSWR: ≤1.100
Return Loss: >26 dB
These measurable specifications are much more useful than simply describing the connector as offering “good signal quality”.
Why Return Loss Matters
Return loss measures unwanted signal reflection caused by impedance variations.
Potential causes of impedance irregularities include:
- Incorrect connector selection
- Poor cable preparation
- Incorrect crimping
- Damaged coax
- Tight cable bends
- Poor adapters
- Connector damage
Higher return-loss values represent less unwanted reflected signal.
A correctly assembled true 75 Ω connector helps maintain the intended impedance through the connection.
HD-SDI Applications
The NBNC75BLP9 is well suited to professional HD-SDI cable assemblies when used with an appropriate coaxial cable.
Potential applications include:
- Cameras
- Monitoring
- Vision systems
- Video routing
- Patch panels
- Broadcast infrastructure
- Production racks
- Touring video
The complete cable assembly determines the final usable transmission distance and signal performance.
3G-SDI Applications
Neutrik publishes performance for NBNC75BLP9 through 3 GHz.
This makes 3G-SDI a relevant professional application.
However, successful 3G-SDI transmission depends on more than the connector.
The complete system includes:
- Cable type
- Cable length
- Crimp quality
- Cable condition
- Number of connections
- Connected equipment
For critical applications, test the completed cable at the required data rate.
HD Version – Not the UHD Version
The model on this page is:
NBNC75BLP9
This belongs to Neutrik’s:
rearTWIST HD
range.
Neutrik separately manufactures:
NBNC75BLP9X
as a:
rearTWIST UHD
connector.
The UHD version is specifically designed for higher-resolution 4K and 8K video systems.
NBNC75BLP9 vs NBNC75BLP9X
NBNC75BLP9 – rearTWIST HD
- True 75 Ω
- 6.3mm cable O.D.
- 1.6mm centre-pin crimp
- 6.47mm shield crimp
- PTFE dielectric
- Optalloy shell plating
- Published performance through 3 GHz
NBNC75BLP9X – rearTWIST UHD
- True 75 Ω
- 6.3mm cable O.D.
- 1.07mm centre-pin crimp
- 6.47mm shield crimp
- Optimised UHD contact and insulator design
- PP dielectric
- Antraloy shell plating
- Published return-loss performance through 18 GHz
- Specifically designed for 4K and 8K signal transmission
The two models therefore require different centre-pin crimp tooling.
Do not use the standard BLP9 crimp specification when assembling BLP9X.
UHD / 4K / 8K Applications
If the application specifically requires Neutrik’s dedicated high-resolution UHD performance, select:
NBNC75BLP9X
with a cable combination approved by Neutrik for the required UHD system.
Neutrik publishes BLP9X performance of:
- 30 dB return loss up to 6 GHz
- 24 dB up to 12 GHz
- 20 dB up to 18 GHz
The standard NBNC75BLP9 should therefore remain positioned as the HD model rather than being described as a dedicated 4K/8K BNC connector.
Precision-Machined Brass Construction
Neutrik specifies:
Centre Contact: Brass CuZn35Pb2
Shell: Brass CuZn39Pb3
Precision machining is important in professional BNC connectors because the physical geometry directly contributes to the connector’s electrical characteristics.
Gold-Plated Centre Contact
The centre signal contact is plated with:
0.2 µm AuCo gold.
This provides a stable professional signal interface.
PTFE Dielectric
The connector uses:
PTFE
for the internal dielectric.
In a true 75 Ω BNC connector, the dielectric shape and material form part of the impedance design.
Optalloy Shell Plating
Neutrik specifies:
Optalloy
for the connector shell plating.
This is one of the differences between the standard HD connector and the UHD X version, which uses Antraloy.
Inner Contact Resistance
Neutrik specifies:
≤3 mΩ
for the inner contact.
Outer Contact Resistance
Neutrik specifies:
≤2 mΩ
for the outer contact.
Insulation Resistance
Neutrik specifies:
>5 GΩ.
Dielectric Strength
Neutrik specifies:
1.5 kV DC.
This is a connector test specification and should not be interpreted as an operating voltage for power distribution.
Rated Voltage
The connector is rated:
<50 V.
It is intended for professional signal and video applications—not mains-power use.
Insertion Force
Neutrik specifies:
<25 N
insertion force.
More Than 1,000 Mating Cycles
The NBNC75BLP9 is rated for:
More than 1,000 mating cycles.
This makes it suitable for professional environments where cables are repeatedly:
- Patched
- Unpatched
- Transported
- Reinstalled
- Serviced
Operating Temperature
Neutrik specifies:
-30°C to +85°C
for the connector.
The complete cable assembly may have different environmental limits according to the selected coaxial cable.
Broadcast Television
The NBNC75BLP9 is particularly useful across:
- Broadcast studios
- Production control rooms
- Video routers
- Monitoring systems
- Camera infrastructure
- Signal distribution
- Patch systems
Its true 75 Ω construction and rearTWIST operation are well matched to dense broadcast racks.
Outside Broadcast
OB trucks and mobile production systems often contain very high BNC connector densities.
Potential applications include:
- Cameras
- Replay
- Monitoring
- Routing
- Recording
- Vision mixing
- Distribution
The ability to twist the connector from the rear is particularly useful in these tightly packed systems.
Film and Television
Professional film and television systems may use SDI coax throughout:
- Studios
- Production stages
- Camera systems
- Monitoring
- Video villages
- Routing racks
- Recording systems
The NBNC75BLP9 provides a professional connector option for compatible 6.3mm coaxial cable.
Live Event Video
Live events now rely heavily on professional digital video systems.
Applications may include:
- Cameras
- IMAG
- LED processors
- Vision mixers
- Recorders
- Routers
- Monitoring
- Broadcast feeds
The NBNC75BLP9 can form part of professional SDI cable inventory used across concerts, festivals, conferences and corporate production.
Touring Video
Touring video cables undergo repeated:
- Deployment
- Coiling
- Patching
- Transport
- Reconnection
The combination of precision 75 Ω construction, jacket crimping, rearTWIST operation and >1,000 mating cycles makes the connector well suited to touring use.
Professional AV
Professional AV systems may use BNC for:
- SDI video
- Camera feeds
- Monitoring
- Recording
- Routing
- Distribution
- Broadcast integration
The NBNC75BLP9 is a suitable professional connector where its approved coaxial cable group matches the system.
Equipment-Hire Companies
Hire companies can use NBNC75BLP9 when:
- Building new SDI cable inventory
- Repairing damaged video cables
- Maintaining Belden 1505A assemblies
- Building Canare L-4CFB assemblies
- Preparing broadcast packages
- Maintaining touring video systems
Correctly matching connector SKU to cable type helps keep a large rental inventory consistent and reliable.
Colour-Coded rearTWIST Boots
Neutrik offers BST-BNC rearTWIST boots in multiple colours.
Colour coding can be used to identify cables by:
- Length
- Camera number
- Signal type
- Department
- Destination
- Production
- Ownership
This can be particularly useful in broadcast and touring environments.
Cable Preparation
Professional BNC performance depends heavily on correct assembly.
When terminating NBNC75BLP9:
- Confirm the exact coaxial cable is compatible.
- Use Neutrik’s specified stripping dimensions.
- Avoid damaging the centre conductor.
- Maintain the dielectric geometry.
- Prevent loose braid strands.
- Fully seat the centre contact.
- Use the correct 1.6mm centre-pin crimp.
- Use the correct 6.47mm shield/jacket crimp.
- Inspect the completed assembly.
- Test the cable before production use.
Avoid Excessive Cable Bending
Coaxial cable relies on controlled physical geometry to maintain its 75 Ω impedance.
Avoid:
- Crushing
- Tight bends
- Excessive cable-tie pressure
- Equipment rolling over the cable
- Poor storage
Always follow the cable manufacturer’s minimum bend-radius recommendations.
Test Completed Cables
Every new or repaired professional video cable should be tested before entering production inventory.
At minimum check:
- Centre continuity
- Shield continuity
- No centre-to-shield short
- Centre-pin seating
- Cable retention
- Bayonet operation
- Connector condition
For high-data-rate SDI systems, appropriate signal-performance testing is recommended.
Product Specifications
Brand: Neutrik
Model: NBNC75BLP9
Series: rearTWIST HD BNC
Connector Type: 75 Ω BNC cable connector
Gender: Male
Impedance: True 75 Ω
Locking: Bayonet with patented rearTWIST operation
Cable O.D.: 6.3mm
Centre-Pin Crimp: 1.6mm square
Shield/Jacket Crimp: 6.47mm hex
Cable Anchoring: Jacket crimp
Cable Retention: >30 N
Insertion Force: <25 N
Mechanical Life: >1,000 mating cycles
Inner Contact Resistance: ≤3 mΩ
Outer Contact Resistance: ≤2 mΩ
Insulation Resistance: >5 GΩ
Dielectric Strength: 1.5 kV DC
Rated Voltage: <50 V
Return Loss to 1 GHz: >32 dB
Return Loss to 2 GHz: >30 dB
Return Loss to 3 GHz: >26 dB
Centre Contact: Brass CuZn35Pb2
Centre Contact Plating: 0.2 µm AuCo gold
Insert: PTFE
Shell: Brass CuZn39Pb3
Shell Plating: Optalloy
Temperature Range: -30°C to +85°C
Crimpability: IEC 60803 and IEC 60352-2 compliant
Neutrik-Listed Compatible Cables
- Argosy Image 720
- Belden 1505A (ANH)
- Belden 4505R
- Belden 8241F
- CAE HD08370LSZH
- Canare L-4CFB
- Clark Wire CD7559-0
- Clark Wire CD7559F-0
- CommScope 5565
- Draka 0.8/3.7 AF
- Draka 755-801
- Draka 755-803
- Draka 755-804
- Gepco VPM2000
- Proel HPC 810
- Suhner S0426
- Sommer 600-0451
- Sommer 600-162(F)
- Percon VK6
Recommended Neutrik Tooling
HX-BNC: BNC crimp-tool frame
DIE-BNC-PG: 1.6mm pin / 6.47mm and 5.00mm shield crimp die
HX-R-BNC: Current rear-series crimp-tool frame
DIE-R-BNC-PDC: Includes 1.60mm centre-pin and 6.47mm shield crimp
CS-BNC-RT: Coaxial cable stripper for 4.0–8.0mm cable O.D.
BST-BNC: Optional colour-coded rearTWIST boots
CAS-BNC-T: BNC assembly tool kit
PT-BNC: Coaxial cable cutting tool
Why Choose the Neutrik NBNC75BLP9?
Choose the NBNC75BLP9 where professional video cable manufacture requires:
- Genuine Neutrik quality
- True 75 Ω impedance
- rearTWIST HD construction
- 6.3mm professional coax compatibility
- Belden 1505A compatibility
- Canare L-4CFB compatibility
- 1.6mm centre-pin crimp
- 6.47mm shield/jacket crimp
- Published performance through 3 GHz
- Easier connection in dense BNC panels
- Gold-plated centre contact
- PTFE dielectric
- Precision-machined brass construction
- More than 1,000 mating cycles
- Professional broadcast and touring suitability
It is particularly useful for professional broadcast and production environments using 6.3mm-class coax where high-density connector access and controlled 75 Ω performance are important.
Why Buy Neutrik NBNC75BLP9 from GigLife?
GigLife supplies professional connectors, adaptors, cables, tapes, consumables and technical accessories specifically for the entertainment and production industries.
With more than 25 years of hands-on live entertainment industry experience, GigLife understands that reliable professional video depends on matching the correct cable, connector and assembly tooling—not simply selecting a BNC that looks right.
Products are selected by people who work in production and understand the requirements of:
- Video technicians
- Broadcast engineers
- AV technicians
- Touring crews
- Production companies
- Film and television departments
- Broadcast facilities
- Festivals
- Live event video departments
- Conference production
- Exhibition contractors
- Equipment-hire companies
- Venues and performing arts centres
Whether you are building Belden 1505A cables, terminating Canare L-4CFB, repairing touring SDI inventory or restocking a professional broadcast workshop, GigLife supplies genuine components selected by people who understand the job.
Orders are dispatched from Brisbane, with Australia-wide shipping available.
GigLife is proudly by the professionals… for the professionals.
