Main Terminals (Anode/Cathode): Voltage Rating 600-1600V

Component Specifications

Definition

Main terminals (anode/cathode) are critical electrical connection points in Silicon-Controlled Rectifier (SCR) modules, designed to handle high current loads and provide reliable interfaces between the semiconductor device and external power circuits. These terminals facilitate the controlled rectification of alternating current to direct current in industrial applications.

Working Principle

The anode and cathode terminals serve as the primary electrical pathways for current flow through the SCR. When a gate signal triggers the SCR, current flows from the anode to the cathode terminal, enabling power control in AC-to-DC conversion circuits.

Materials

Copper alloy (typically C11000 or C10100) with tin or silver plating for enhanced conductivity and corrosion resistance; insulating materials include ceramic or high-temperature thermoplastics.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Current Rating	50-1000A
Voltage Rating	600-1600V
Temperature Range	-40°C to +125°C
Contact Resistance	<0.5mΩ
Insulation Resistance	>1000MΩ

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 9001, DIN EN 60146

Parent Products

This component is used in the following industrial products

SCR Module

A power electronic component that contains one or more Silicon Controlled Rectifiers (SCRs) and associated circuitry for controlling electrical power.

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Engineering Analysis

Risks & Mitigation

Overheating due to high current loads
Corrosion in humid environments
Mechanical stress from vibration

FMEA Triads

Trigger: Loose terminal connections
Failure: Increased contact resistance leading to overheating and potential thermal runaway
Mitigation: Implement torque-controlled fastening and regular maintenance inspections

Trigger: Material degradation from environmental exposure
Failure: Reduced conductivity and eventual connection failure
Mitigation: Use corrosion-resistant plating and protective enclosures

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1mm for terminal dimensions, ±5% for electrical specifications

Test Method

High-potential testing, thermal cycling, vibration testing per IEC 60747 standards

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 Main Terminals (Anode/Cathode)

Manufacturer profiles associated with Main Terminals (Anode/Cathode).

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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 anode and cathode terminals in SCR modules?

The anode terminal is the positive input where current enters the SCR, while the cathode terminal is the negative output where current exits after rectification.

How do main terminals affect SCR module performance?

Main terminals directly impact current-carrying capacity, thermal management, and electrical reliability; poor terminal design can lead to overheating, voltage drops, or connection failures.

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.

Main Terminals (Anode/Cathode)