Electrode Fingers: Width 2-20 mm, Length 10-100 mm

Component Specifications

Definition

Electrode fingers are precision-engineered conductive elements that form part of an electrode grid assembly. They serve as the contact interface for transferring electrical current to workpieces in industrial applications such as resistance welding, electroplating, electrochemical machining, or electrical testing. These components are designed to maintain consistent electrical conductivity, mechanical alignment, and thermal stability under operational loads.

Working Principle

Electrode fingers function by establishing and maintaining electrical contact with a target surface. When integrated into an electrode grid, they distribute electrical current uniformly across multiple contact points. In resistance welding, for example, they concentrate current to generate heat at specific junctions. Their design ensures minimal electrical resistance, proper force application, and heat dissipation to prevent degradation during repetitive cycles.

Materials

Typically made from high-conductivity copper alloys (e.g., C18200 chromium copper, C17200 beryllium copper) or tungsten-copper composites for enhanced wear resistance and thermal management. Silver-plated variants may be used for improved conductivity in low-resistance applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	2-20 mm
Length	10-100 mm
Hardness	70-200 HV
Thickness	1-10 mm
Conductivity	>80% IACS
Operating Temperature	Up to 500°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 5821, ISO 5182, DIN 1910-4

Parent Products

This component is used in the following industrial products

Electrode Grid

A patterned conductive structure that forms the sensing element in a humidity sensor by detecting changes in electrical properties due to moisture absorption.

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Engineering Analysis

Risks & Mitigation

Electrical arcing due to poor contact
Overheating from excessive current
Mechanical wear leading to inconsistent performance
Corrosion in humid or chemical environments

FMEA Triads

Trigger: Material fatigue from thermal cycling
Failure: Cracking or deformation of fingers
Mitigation: Use alloys with high thermal fatigue resistance and implement regular inspection schedules.

Trigger: Contamination on contact surfaces
Failure: Increased electrical resistance and poor welding quality
Mitigation: Clean surfaces regularly and use protective coatings where applicable.

Trigger: Misalignment in the grid assembly
Failure: Uneven current distribution and premature wear
Mitigation: Ensure precise mounting and alignment during installation and maintenance.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm for dimensional accuracy, ±5% for electrical resistance

Test Method

Conductivity testing per ASTM B193, dimensional inspection per ISO 2768, and thermal cycling tests.

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.

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Manufacturers of Electrode Fingers

Manufacturer profiles associated with Electrode Fingers.

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Frequently Asked Questions

What are electrode fingers used for?

Electrode fingers are used to create precise electrical contact points in processes like resistance welding, electroplating, and electrical testing within manufacturing systems.

How do electrode fingers differ from standard electrodes?

Electrode fingers are smaller, multiple contact elements arranged in a grid pattern, allowing for distributed current application, unlike single-point standard electrodes.

What materials are best for electrode fingers?

Copper alloys like chromium copper or beryllium copper are common due to their high conductivity and wear resistance; tungsten-copper composites are used for high-temperature applications.

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.

Electrode Fingers