Test Leads - BNC Interface

Image Part Number Description / PDF Quantity Rfq
CT3158-100

CT3158-100

Cal Test Electronics

TEST LEAD BNC TO GATOR 39.4"

53

5423-C-48

5423-C-48

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 48"

0

BU-5131-A-4-0

BU-5131-A-4-0

Mueller Electric Co.

TEST LEAD BNC TO GATOR 4"

0

72927-C-80

72927-C-80

Pomona Electronics

TEST LEAD BNC TO BANANA 80"

78

CT2987

CT2987

Cal Test Electronics

TEST LEAD BNC TO SMD TWEEZ 39.4"

11

CT2435-200-0

CT2435-200-0

Cal Test Electronics

TEST LEAD BNC TO BANANA 78.7"

0

CT2431-200-9

CT2431-200-9

Cal Test Electronics

TEST LEAD BNC TO GATOR 78.7"

0

5188

5188

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 5.4"

51

3788

3788

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 5.5"

509

4777-C-36

4777-C-36

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 36"

30

1020-60

1020-60

E-Z-Hook

TEST LEAD BNC TO GRAB HOOK 60"

19

4725

4725

Pomona Electronics

TEST LEAD BNC TO GATOR 36"

8

BU-5244-A-4-0

BU-5244-A-4-0

Mueller Electric Co.

TEST LEAD BNC TO PIN TIP 4"

0

CT2431-100-9

CT2431-100-9

Cal Test Electronics

TEST LEAD BNC TO GATOR 39.4"

0

GSA-3746

GSA-3746

Global Specialties

TEST LEAD BNC TO KELVIN

0

3901

3901

Pomona Electronics

TEST LEAD BNC TO PIN TIP 5.5"

62

5342

5342

Pomona Electronics

TEST LEAD BNC TO GATOR 36"

85

72927-C-40

72927-C-40

Pomona Electronics

TEST LEAD BNC TO BANANA 40"

47

4530-C-48

4530-C-48

Pomona Electronics

TEST LEAD BNC TO BANANA 48"

64

CT2435-100-5

CT2435-100-5

Cal Test Electronics

TEST LEAD BNC TO BANANA 39.4"

0

Test Leads - BNC Interface

1. Overview

BNC (Bayonet Neill-Concelman) interface test leads are coaxial cable assemblies designed for quick-connect/disconnect applications in test and measurement systems. They provide reliable signal transmission for high-frequency analog and digital signals. These test leads are critical in ensuring signal integrity in laboratory, industrial, and field environments due to their secure bayonet locking mechanism and impedance-matched design.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Standard BNC Test LeadsGeneral-purpose cables with 50/75 impedance, suitable for frequencies up to 4 GHzOscilloscope signal input, basic RF testing
Low-Loss BNC CablesEnhanced dielectric materials for reduced signal attenuationHigh-precision RF/microwave measurements
High-Voltage BNC LeadsReinforced insulation for >500V applicationsPower amplifier testing, high-voltage circuit diagnostics
Differential Signal CablesTwisted-pair construction for balanced signal transmissionHigh-speed differential probing in communication systems
Waterproof BNC AssembliesIP67-rated connectors for outdoor/environmental testingField measurements in harsh industrial environments

3. Structure and Components

Typical BNC test leads consist of: - Central conductor (silver-plated copper alloy) - Dielectric insulation (PTFE or foam polyethylene) - Braided shielding (aluminum/mylar foil + copper braid) - Outer jacket (PVC or flexible TPE) - BNC connectors with nickel/gold-plated brass bodies Standard cable diameters range from 1.8mm to 5.6mm with 50 (radio frequency) or 75 (video/telecom) impedance options.

4. Key Technical Specifications

ParameterTypical RangeImportance
Frequency RangeDC-4GHz (standard), DC-18GHz (high-performance)Determines maximum usable bandwidth
Voltage Rating50-500V RMSEnsures safe operation in high-voltage environments
Insertion Loss0.1-3.5 dB/mImpacts signal measurement accuracy
Shielding Effectiveness60-100dBPrevents electromagnetic interference
VSWR1.2:1 to 1.5:1Measures impedance matching quality
Durability500+ mating cyclesDefines mechanical lifespan

5. Application Fields

Key industries and equipment: - Telecommunications: 5G base station testing, network analyzer calibration - Medical Electronics: Diagnostic imaging equipment signal verification - Aerospace: Avionics RF system diagnostics - Education: Student laboratory measurement setups - Industrial Automation: Sensor signal monitoring in production lines

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Keysight TechnologiesN287xA SeriesPhase-stable microwave test leads up to 26.5GHz
Teledyne LeCroyPP066 probes6GHz bandwidth differential BNC interface
Fluke Calibration7000 SeriesThermally stable cables for precision metrology
Belden9103 SeriesLow-smoke zero-halogen industrial test leads

7. Selection Guidelines

Key considerations: - Match cable impedance (50 vs 75 ) to device requirements - Verify frequency range exceeds application needs by 20% - Choose appropriate shielding level (standard vs tri-shield) - Consider bend radius for portable applications - Environmental ratings (temperature range, chemical resistance) - Connector plating (gold for corrosion resistance) - Cable length optimization (shorter for higher frequencies)

8. Industry Trends

Emerging developments: - Transition to 10GHz+ bandwidth requirements for 5G testing - Increased adoption of phase-matched cable assemblies - Integration with smart test systems via embedded ID chips - Development of ultra-flexible "test whip" designs - Growth in automotive radar testing applications (76-81GHz) - Environmental compliance with RoHS and REACH standards

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