INDUSTRY COMPONENT

Contact Probes/Pins

Precision electrical contact probes used in test fixtures for verifying electronic device functionality.

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Component Specifications

Definition
Contact probes and pins are precision-engineered spring-loaded components designed to establish temporary electrical connections between test equipment and devices under test (DUTs). They provide reliable, repeatable contact points for signal transmission, power delivery, and measurement in automated test environments, ensuring accurate validation of electronic circuits and components.
Working Principle
Spring-loaded plunger mechanism maintains consistent contact pressure against test points. When compressed against a DUT pad or pin, the internal spring ensures proper electrical continuity while accommodating surface variations and preventing damage through controlled force application.
Materials
Plunger: Beryllium copper or phosphor bronze with gold plating (typically 30-50 microinches). Barrel: Brass or stainless steel with nickel plating. Spring: Stainless steel or music wire. Tip configurations: Crown, spear, serrated, or flat designs for various contact requirements.
Technical Parameters
  • Lifecycle >100,000 actuations
  • Spring Force 10-200g
  • Current Rating 1-5A typical
  • Working Travel 0.5-3.0mm
  • Contact Resistance <50mΩ
  • Insulation Resistance >1000MΩ
  • Operating Temperature -40°C to +125°C
  • Dielectric Withstanding Voltage 500V AC min
Standards
ISO 9001, DIN 41612, IEC 61032

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Contact Probes/Pins.

test probes spring probes pogo pins contact probes test fixtures DUT interface electrical testing automated test equipment PCB testing Contact Probes/Pins Contact Probes/Pins in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Test Fixture / DUT Interface

Physical and electrical interface component that connects the Device Under Test (DUT) to automated test equipment for functional and parametric testing.

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Engineering Analysis

Risks & Mitigation
  • Contact wear leading to increased resistance
  • Spring fatigue causing inconsistent pressure
  • Contamination from flux or debris
  • Misalignment damaging DUT or probe
  • Electrostatic discharge (ESD) damage
FMEA Triads
Trigger: Contaminated contact surfaces
Failure: Intermittent or high resistance connections
Mitigation: Implement regular cleaning protocols and use protective covers when not in use
Trigger: Spring fatigue from excessive cycles
Failure: Insufficient contact pressure leading to open circuits
Mitigation: Establish preventive replacement schedules based on actuation counts
Trigger: Misalignment during fixture operation
Failure: Bent plungers or damaged DUT contacts
Mitigation: Implement alignment guides and vision systems for precise positioning

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.01mm plunger diameter, ±5% spring force variation
Test Method
Four-wire Kelvin measurement for contact resistance, force-displacement testing for spring characteristics, environmental cycling per IEC 60068-2 standards

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between contact probes and pogo pins?

Contact probes typically refer to spring-loaded components with precision barrels and plungers for test applications, while pogo pins are a specific type of spring-loaded connector often used for charging or data transfer. Both function on similar spring-loaded principles but differ in precision requirements and application contexts.

How do I select the right contact probe for my test fixture?

Consider these factors: current requirements, contact resistance tolerance, tip style for your DUT pads, working travel distance, spring force to prevent damage, environmental conditions, and lifecycle requirements. Consult manufacturer datasheets for specific application matching.

What maintenance do contact probes require?

Regular cleaning with isopropyl alcohol, inspection for wear or contamination, periodic replacement based on actuation count, and verification of contact resistance. Proper storage in controlled environments prevents oxidation and spring fatigue.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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Contact Probes Contacts (Pins/Sockets)