AWG36–AWG46 Very Fine Micro Coaxial Cable Series

AWG36–AWG46 very fine micro coaxial cable is designed for compact RF modules, sensors, medical devices, precision instruments, miniature electronics, and internal signal connections where extremely small cable size, 50Ω impedance, shielding, and flexible routing are required. This series includes ultra-fine coaxial cable options with PFA or FEP insulation, spiral shielding, compact jacket structures, and custom support for miniature cable assemblies.

AWG36–AWG46 Micro Coax
50Ω Impedance
Miniature Signal Cable
Custom Micro Assemblies

Overview

AWG36–AWG46 Very Fine Micro Coaxial Cable Series is designed for compact RF modules, sensors, medical devices, precision instruments, miniature electronics, and internal signal connections where extremely small cable size and stable 50Ω signal transmission are required.

This product family includes ultra-fine coaxial cable options from AWG36 to AWG46. Compared with standard RF coaxial cable, these micro coaxial cables are designed for space-limited equipment and fine internal wiring, while still providing controlled impedance, shielding, insulation performance, and flexible routing for compact electronic systems.

This page is intended for product selection. Exact specifications should be confirmed by AWG size, outside diameter, conductor resistance, insulation material, shielding structure, jacket material, allowable current, operating temperature, cable length, connector or termination requirement, and project drawing before ordering.

Series Options

The table below helps buyers compare the main very fine micro coaxial cable options before reviewing detailed datasheets or drawings.

Series Option	Product Positioning	Typical Selection Scenario
AWG36/50Ω	Fine micro coaxial cable with larger size among this series	For compact signal routing where micro coax size is needed but slightly higher allowable current and lower conductor resistance are preferred.
AWG38/50Ω	Very fine 50Ω micro coaxial cable	For miniature RF, sensor, and internal equipment wiring requiring smaller cable diameter than AWG36.
AWG40/50Ω	Ultra-fine 50Ω micro coaxial cable	For high-density internal signal connections and compact electronic assemblies requiring very small routing space.
AWG42/50Ω	Extra-fine 50Ω micro coaxial cable	For precision devices and miniature modules where cable size and weight are critical.
AWG44/50Ω	Extremely fine micro coaxial cable	For highly compact internal signal connections requiring extremely small conductor and jacket size.
AWG46/50Ω	Smallest listed 50Ω micro coaxial cable option	For ultra-miniature devices and tight internal layouts where the smallest cable size is the main selection requirement.
BYC Custom	Custom micro coaxial cable or cable assembly	For projects requiring custom AWG size, color, cable length, shield structure, jacket material, connector, termination, or documentation support.

Features

AWG36 to AWG46 Options

Available in very fine conductor sizes from AWG36 to AWG46 for compact devices, miniature modules, and high-density internal wiring.

50Ω Micro Coax Design

Designed for 50Ω signal transmission in miniature RF, sensor, instrumentation, and electronic device applications.

Ultra-Small Outside Diameter

Representative nominal outside diameters range from approximately 0.21mm to 0.58mm depending on selected AWG size and structure.

PFA or FEP Insulation

Selected models use PFA or FEP insulation systems to support fine coaxial cable construction and stable electrical performance.

Spiral Shielding

Spiral shielding helps maintain signal protection while keeping the cable thin, flexible, and suitable for compact routing.

Custom Micro Cable Support

BYC Cables can review custom micro coaxial cable requirements including length, color, shielding, jacket, termination, and documentation.

Construction & Materials

Very fine micro coaxial cables are designed for applications where standard coaxial cable is too large. Final construction should be selected according to cable diameter, conductor resistance, allowable current, impedance, shielding, insulation material, jacket material, and assembly requirements.

Construction Options

Component	Available Options	Selection Notes
Inner Conductor	Tinned copper wire, silver-plated copper wire, or silvered copper alloy depending on selected model	Conductor material and AWG size affect resistance, current capacity, flexibility, and signal performance.
AWG Size	AWG36, AWG38, AWG40, AWG42, AWG44, AWG46	Smaller AWG numbers provide larger conductor size; higher AWG numbers provide smaller cable size for tighter spaces.
Insulation	FEP or PFA depending on selected model	Insulation material should be selected according to temperature, dielectric performance, cable size, and processing requirements.
Shielding	Spiral shielding, selected models with additional wrapping layer	Shielding supports signal protection while maintaining fine cable size and routing flexibility.
Jacket	PFA or PET polyester tape depending on selected construction	Jacket or wrapping structure affects outside diameter, handling, abrasion protection, and assembly process.
Impedance	50Ω ±5Ω, representative listed value	Suitable for miniature RF and high-frequency signal applications requiring controlled impedance.
Customization	Custom color, cable length, termination, connector, jacket, and assembly options	BYC Cables can review drawings, samples, and device assembly requirements before recommending a suitable micro coax construction.

Construction Differences

Model	Construction Focus	Confirmed Dimensions	When to Choose
AWG36/50Ω	Fine micro coax with larger size in this series	Conductor OD 0.15±0.01mm; insulation nominal OD 0.43±0.02mm; jacket nominal OD 0.58±0.02mm.	Choose when micro coax size is needed but slightly stronger conductor and higher allowable current are preferred.
AWG38/50Ω	Very fine micro coax	Conductor OD 0.12±0.01mm; insulation nominal OD 0.33±0.02mm; jacket nominal OD 0.46±0.02mm.	Choose when smaller diameter than AWG36 is required for compact signal routing.
AWG40/50Ω	Ultra-fine micro coax	Conductor OD 0.09±0.01mm; insulation nominal OD 0.23±0.02mm; jacket nominal OD 0.34±0.02mm.	Choose for high-density internal wiring where cable size and routing space are tightly limited.
AWG42/50Ω	Extra-fine micro coax	Conductor OD 0.075±0.01mm; insulation nominal OD 0.21±0.02mm; jacket nominal OD 0.33±0.02mm.	Choose when very small conductor size and compact jacket diameter are required.
AWG44/50Ω	Extremely fine micro coax	Conductor OD 0.06±0.01mm; insulation nominal OD 0.16±0.01mm; jacket nominal OD 0.26±0.02mm.	Choose for miniature devices requiring extremely small cable routing.
AWG46/50Ω	Smallest listed micro coax option	Conductor OD 0.048±0.01mm; insulation nominal OD 0.12±0.01mm; jacket nominal OD 0.21±0.02mm.	Choose when the smallest listed micro coaxial cable size is required.

Specifications

The specifications below are intended for preliminary product selection. Final values should be confirmed according to selected AWG size, insulation material, shielding structure, outside diameter, resistance, allowable current, cable length, and assembly requirement.

Product Family	AWG36–AWG46 Very Fine Micro Coaxial Cable Series
Included Models	AWG36/50Ω, AWG38/50Ω, AWG40/50Ω, AWG42/50Ω, AWG44/50Ω, AWG46/50Ω
Impedance	50Ω ±5Ω, representative listed value
Rating Voltage	30V
Rating Temperature	80°C (176°F)
Operating Temperature	-40°C to +80°C (-40°F to +176°F)
Insulation Resistance	Representative listed minimum values include 1000MΩ·km, 1500MΩ·km, or 1524MΩ·km depending on selected model.
Allowable Current	Representative listed values range from 0.2A to 0.7A depending on selected AWG size.
Packaging	Plastic packing, standard unit packing length 1000m/reel
Storage Recommendation	Store in a dry and clean place. Suggested storage condition: 20°C to 30°C (68°F to 86°F), humidity below 60%.
Customization	Available based on AWG size, cable length, color, shielding, jacket, connector, termination, and documentation requirements.

For accurate quotation, please provide the target AWG size, impedance requirement, outside diameter limit, cable length, color, termination or connector requirement, allowable current, operating environment, and applicable drawings or samples.

Representative Model Data

Model	Conductor OD	Nominal Cable OD	Center Conductor Resistance	Allowable Current	Operating Temperature
AWG36/50Ω	0.15±0.01mm	0.58±0.02mm	Max. 1490Ω/km	0.7A	-40°C to +80°C (-40°F to +176°F)
AWG38/50Ω	0.12±0.01mm	0.46±0.02mm	Max. 2600Ω/km	0.45A	-40°C to +80°C (-40°F to +176°F)
AWG40/50Ω	0.09±0.01mm	0.34±0.02mm	Max. 5000Ω/km	0.4A	-40°C to +80°C (-40°F to +176°F)
AWG42/50Ω	0.075±0.01mm	0.33±0.02mm	Max. 7000Ω/km	0.3A	-40°C to +80°C (-40°F to +176°F)
AWG44/50Ω	0.06±0.01mm	0.26±0.02mm	Max. 12000Ω/km	0.25A	-40°C to +80°C (-40°F to +176°F)
AWG46/50Ω	0.048±0.01mm	0.21±0.02mm	Max. 19000Ω/km	0.2A	-40°C to +80°C (-40°F to +176°F)

Applications

Very fine micro coaxial cables are suitable for compact electronic systems where space, weight, controlled impedance, and shielded signal transmission are important.

Medical Devices

For selected medical instruments, probes, sensors, and compact signal wiring where extremely small cable size is required.

Precision Instruments

For measurement equipment, inspection instruments, and compact internal signal connections.

Miniature RF Modules

For small RF modules and internal high-frequency signal connections requiring 50Ω impedance.

Sensor Systems

For compact sensor wiring, signal transmission, and high-density electronic assemblies.

Industrial Electronics

For small control modules, monitoring devices, and electronic systems requiring shielded miniature cable routing.

Custom Micro Cable Assemblies

For micro coaxial cable assemblies requiring custom length, color, connector, termination, or multi-cable configuration.

Selection Guide

Use this guide as a starting point. Final selection should be confirmed by available routing space, allowable current, conductor resistance, outside diameter, termination method, and signal requirement.

Requirement	Recommended Option	Selection Reason
Higher allowable current within micro coax range	AWG36/50Ω	Offers the largest conductor size in this series and a listed allowable current of 0.7A.
Balanced small size and handling	AWG38/50Ω	Suitable for compact wiring where smaller diameter than AWG36 is required while still maintaining practical handling.
High-density internal wiring	AWG40/50Ω	Useful when routing space is tight and a smaller coaxial cable is needed.
Very compact device wiring	AWG42/50Ω	Recommended when device space is highly limited and conductor resistance is acceptable for the design.
Extremely small routing space	AWG44/50Ω	Suitable for ultra-compact devices where minimum outside diameter is a major requirement.
Smallest listed cable size	AWG46/50Ω	Choose when the smallest listed micro coaxial cable size is required and current/resistance limits are acceptable.
Custom micro cable assembly	BYC Custom	BYC Cables can review custom length, termination, connector, color, shielding, jacket, and packaging requirements.

Customization Options

BYC Cables can support custom very fine micro coaxial cable requirements based on drawings, samples, equipment interface, and project documentation needs.

AWG Size

AWG36, AWG38, AWG40, AWG42, AWG44, and AWG46 options can be reviewed according to routing space and signal requirements.

Cable Length

Custom cable length and reel packaging can be reviewed according to production and assembly requirements.

Color Identification

Color options can be reviewed for cable identification, multi-line assembly, and production management.

Shielding and Jacket

Shielding structure, PFA or FEP insulation, and jacket or wrapping structure can be reviewed according to device design.

Termination and Assembly

Connector, soldering, stripping, termination, and micro cable assembly requirements can be reviewed based on drawings.

Testing and Documentation

Resistance, insulation, impedance, inspection records, and technical documentation can be provided based on project needs.

Request a Quote

Please provide the target AWG size, impedance requirement, outside diameter limit, cable length, color, allowable current, termination or connector requirement, and applicable drawings or samples.

FAQ

What is very fine micro coaxial cable used for?

It is used for compact RF modules, sensors, medical devices, precision instruments, miniature electronics, and internal signal connections where extremely small cable size and shielding are required.

Which AWG sizes are available?

This series includes AWG36/50Ω, AWG38/50Ω, AWG40/50Ω, AWG42/50Ω, AWG44/50Ω, and AWG46/50Ω options.

What impedance does this micro coaxial cable support?

The listed series is designed for 50Ω impedance, with representative characteristic impedance of 50Ω ±5Ω.

What is the operating temperature range?

The listed operating temperature range is -40°C to +80°C (-40°F to +176°F).

How should I choose between AWG36 and AWG46?

AWG36 provides a larger conductor and higher listed allowable current. AWG46 provides the smallest listed cable size. The final choice should balance routing space, conductor resistance, current requirement, and assembly process.

Can BYC Cables provide custom micro coaxial cable assemblies?

Yes. BYC Cables can review custom AWG size, cable length, color, shielding, jacket, termination, connector, testing, and documentation requirements based on drawings or samples.