Selecting a cable is not only about choosing a connector and length. Conductor construction, insulation, shielding, jacket material, overmold, strain relief, and environmental requirements all affect performance, production cost, flexibility, service life, and compliance documentation.
This guide helps B2B purchasing and engineering teams prepare material requirements before requesting a quotation from a custom cable manufacturer.
Conductor material and wire construction
Copper conductor size and strand construction affect current capacity, flexibility, resistance, outside diameter, and cost. Buyers should state the required wire gauge, conductor count, current or signal function, and whether repeated bending is expected.
- Bare copper: widely used for power, signal, and general cable assemblies.
- Tinned copper: often selected when corrosion resistance, solderability, or environmental exposure matters.
- Fine-stranded conductor: can improve flexibility for moving or coiled cable applications.
Insulation and jacket materials
The jacket protects the internal construction and influences flexibility, abrasion resistance, temperature behavior, appearance, chemical resistance, and processing. Material performance depends on the exact compound and cable design, so project requirements should be discussed rather than relying only on a material name.
PVC
PVC is a practical choice for many indoor, consumer, appliance, power, and cost-sensitive cable programs. Flexible grades, colors, and flame-retardant options may be available depending on the specification.
TPU
TPU is commonly considered for abrasion resistance, repeated movement, coiled cables, industrial handheld devices, vehicle accessories, and outdoor applications. Review our TPU vs PVC coiled cable guide.
TPE and other compounds
TPE compounds can support soft-touch, flexibility, and application-specific performance. Silicone, PE, XLPE, PUR, and other materials may be considered when temperature, electrical, flexibility, or environmental conditions require them.
Shielding and signal protection
Foil shielding, braided shielding, drain wires, twisted pairs, and grounding arrangements can help control interference and signal integrity. Buyers should define the signal type, data requirement, operating environment, shield termination, and connector shell requirements.
Connectors, terminals, and approved equivalents
Specify connector manufacturer, part number, mating component, terminal, plating, pinout, and whether an approved equivalent is acceptable. Long-lead or obsolete connectors can affect sample timing, MOQ, and production continuity.
Overmold and strain-relief design
Overmold geometry affects connector protection, bend support, appearance, tooling, and assembly durability. Share dimensional limits, logo requirements, color, hardness preference, bend direction, and available installation space.
Environmental and application requirements
- Operating and storage temperature
- Indoor, outdoor, vehicle, machinery, or laboratory environment
- Oil, water, abrasion, UV, cleaning, or chemical exposure
- Static installation or repeated movement
- Pull force, bend radius, flex-cycle, and connector retention expectations
Documentation and market requirements
Material declarations, RoHS or REACH information, UL-recognized component options, test reports, and destination-market documentation depend on the selected components and finished-product scope. Requirements should be identified before material approval and quotation.
Material information to include in an RFQ
Send the application, drawing or sample, conductor and cable structure, jacket preference, environment, electrical requirements, connectors, dimensions, testing, quantity, target market, packaging, and required documentation.
Browse cable product categories, review quality and compliance support, or upload your drawing and RFQ.