Test Leads - BNC Interface

Image Part Number Description / PDF Quantity Rfq
5187-C-60

5187-C-60

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 60"

137

4532-C-24

4532-C-24

Pomona Electronics

TEST LEAD BNC TO GATOR 24"

0

4777-C-24

4777-C-24

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 24"

5

5305

5305

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 5.5"

0

3789

3789

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 5.5"

122

4531-C-36

4531-C-36

Pomona Electronics

TEST LEAD BNC TO GATOR 36"

47

4531-C-48

4531-C-48

Pomona Electronics

TEST LEAD BNC TO GATOR 48"

9

5423-C-48

5423-C-48

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 48"

0

72927-C-80

72927-C-80

Pomona Electronics

TEST LEAD BNC TO BANANA 80"

78

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

4725

4725

Pomona Electronics

TEST LEAD BNC TO GATOR 36"

8

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

5189

5189

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 5.4"

31

5423-C-24

5423-C-24

Pomona Electronics

TEST LEAD BNC TO GRAB HOOK 24"

0

EM4970-72#

EM4970-72#

Pomona Electronics

TEST LEAD BNC TO WIRE LEADS 72"

79

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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