INDUSTRY COMPONENT

Connector Headers

Connector headers are electrical interface components that provide secure, reliable connections between control circuit boards and external devices or cables in industrial automation systems.

Component Specifications

Definition
Connector headers are standardized electromechanical components designed to establish electrical connections between printed circuit boards (PCBs) and external wiring harnesses, peripheral devices, or other circuit boards. They consist of a plastic housing with precisely spaced metal pins or sockets that mate with corresponding connectors. In control circuit boards, these headers facilitate signal transmission, power distribution, and data communication between the board and sensors, actuators, displays, or communication modules. They are engineered for durability, vibration resistance, and consistent electrical performance in industrial environments.
Working Principle
Connector headers operate on the principle of mechanical mating and electrical contact. The header's pins (male) or sockets (female) align with corresponding contacts in a mating connector. When engaged, the metal contacts establish a low-resistance electrical path through physical pressure or spring-loaded mechanisms. The plastic housing provides insulation, polarization (to prevent incorrect mating), and mechanical support. Electrical signals or power flow through these contacts, enabling communication between the control circuit board and external components while maintaining signal integrity and preventing short circuits.
Materials
Housing: High-temperature thermoplastics (e.g., PBT, PA, LCP) with UL94 V-0 flame retardancy. Contacts: Copper alloys (e.g., phosphor bronze, brass) with plating (tin, gold, or nickel) for corrosion resistance and low contact resistance. Insulators: Often glass-filled polymers for dimensional stability.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Pitch2.54mm, 2.0mm, 1.27mm
PolarizationKeyed or shrouded designs
Mating Cycles≥50 cycles
Current Rating1A to 5A per pin
Voltage Rating50V to 250V AC/DC
Contact Resistance<20mΩ
Insulation Resistance>1000MΩ
Operating Temperature-40°C to +105°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
IEC 60664-1, UL 94, DIN 41612

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Intermittent connections due to vibration
  • Pin misalignment during mating
  • Corrosion in humid environments
  • Overheating from high current
  • Electrostatic discharge (ESD) damage
FMEA Triads
Trigger: Vibration loosening contacts
Failure: Intermittent signal loss or power disruption
Mitigation: Use locking mechanisms, periodic inspection, and vibration testing per ISO 16750-3
Trigger: Corrosion from moisture or contaminants
Failure: Increased contact resistance or open circuit
Mitigation: Apply conformal coating, use gold-plated contacts, and ensure IP-rated enclosures
Trigger: Overcurrent due to short circuit
Failure: Overheating and melting of housing
Mitigation: Implement current protection (fuses, circuit breakers) and adhere to current ratings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Pin position tolerance ±0.1mm, housing dimensions per manufacturer specifications
Test Method
Electrical testing (continuity, insulation resistance), mechanical testing (mating force, durability), environmental testing (temperature cycling, humidity) per IEC 60512

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
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Connector Headers

Manufacturer profiles associated with Connector Headers.

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Frequently Asked Questions

What is the difference between male and female connector headers?

Male headers have protruding pins that insert into female headers, which have sockets. Male headers are typically mounted on PCBs, while female headers may be on cables or other boards for mating.

How do I select the right connector header for my control circuit board?

Consider pitch (pin spacing), pin count, current/voltage requirements, operating environment (temperature, vibration), mating cycle durability, and compliance with industry standards like IEC 60664-1.

Can connector headers be used in high-vibration industrial environments?

Yes, select headers with locking mechanisms (e.g., latches, screws), shrouded designs, and robust materials. Vibration-resistant headers often meet standards like DIN 41612 for reliability.

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.

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