Connector (e.g., RJ45): Voltage Rating 125V AC, Pin Count 8P8C

Component Specifications

Definition

The RJ45 connector is an 8-position, 8-contact (8P8C) modular connector used primarily for Ethernet networking and telecommunications. It terminates twisted-pair cables (typically Cat5e, Cat6, or higher) and provides a secure, shielded connection to Network Interface Controllers (NICs) and other networking equipment. The connector features a locking tab for secure mating and follows T568A or T568B wiring standards for consistent pin assignments.

Working Principle

The RJ45 connector works by establishing electrical connections between the conductors in a twisted-pair cable and the corresponding pins in a NIC's port. When inserted, the connector's contacts press against the cable's insulated wires, creating a conductive path. The locking tab ensures mechanical stability, while the connector's shielding (if present) reduces electromagnetic interference, enabling reliable data transmission via differential signaling over the cable pairs.

Materials

Typically made from phosphor bronze or brass contacts with gold or nickel plating for conductivity and corrosion resistance. The housing is usually thermoplastic (e.g., polycarbonate or ABS) for durability and insulation. Shielding may include metal shells or foil for EMI protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Pin Count	8P8C
Current Rating	1.5A
Voltage Rating	125V AC
Insertion Cycles	≥750 cycles
Contact Resistance	<20 mΩ
Cable Compatibility	Cat5e, Cat6, Cat6a, Cat7
Insulation Resistance	>1000 MΩ
Operating Temperature	-40°C to +85°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO/IEC 11801, TIA/EIA-568, IEC 60603-7

Parent Products

This component is used in the following industrial products

Network Interface Controller(s)

A Network Interface Controller (NIC) is an essential hardware component within an IoT Gateway that provides the physical interface and manages data transmission between the gateway and various networks (e.g., Ethernet, Wi-Fi, cellular).

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Engineering Analysis

Risks & Mitigation

Intermittent connections due to poor crimping
EMI interference in unshielded versions
Mechanical failure of locking tab

FMEA Triads

Trigger: Improper crimping tool alignment
Failure: Intermittent data transmission or complete connection loss
Mitigation: Use certified crimping tools and follow manufacturer guidelines for termination

Trigger: Excessive bending or strain on cable
Failure: Broken conductors or connector damage
Mitigation: Implement strain relief and adhere to minimum bend radius specifications

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Contact position tolerance ±0.2mm, insertion force 20N max, withdrawal force 10N min

Test Method

Per IEC 60512 for electrical continuity, insulation resistance, and mechanical durability

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Connector (e.g., RJ45)

Manufacturer profiles associated with Connector (e.g., RJ45).

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between RJ45 and 8P8C?

RJ45 is a common name for the 8P8C connector used in Ethernet, but technically, RJ45 refers to a specific telephone jack standard. In industrial contexts, 8P8C is the correct term for Ethernet connectors.

Can RJ45 connectors be used in harsh environments?

Yes, industrial-grade RJ45 connectors with IP67 ratings, metal housings, and enhanced shielding are available for harsh conditions like manufacturing floors.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Connector (e.g., RJ45)