SCR (Thyristor) Die: Voltage Rating 600V to 2500V

Component Specifications

Definition

An SCR die is the fundamental semiconductor wafer element of a thyristor, consisting of a four-layer PNPN structure fabricated on a silicon substrate. It functions as a bistable switch that can be triggered into conduction by a gate signal and remains latched until the current drops below the holding threshold. This component is essential for precise control of high-power AC/DC circuits in industrial equipment.

Working Principle

The SCR die operates on the principle of regenerative feedback within its PNPN structure. When a positive gate current is applied to the P-layer near the cathode, it initiates carrier injection that turns on the device. Once triggered, the die maintains conduction (latches) due to internal positive feedback, even after gate signal removal. Conduction ceases only when the anode current falls below the holding current, typically during AC zero-crossing or through forced commutation in DC circuits.

Materials

Monocrystalline silicon wafer with doped regions (P-type and N-type), aluminum or gold metallization for contacts, silicon dioxide passivation layer, and ceramic or metal substrate for mounting.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Dv/dt Rating	50V/μs to 1000V/μs
Current Rating	10A to 500A
Voltage Rating	600V to 2500V
Holding Current	10mA to 100mA
Gate Trigger Current	5mA to 200mA
Operating Temperature	-40°C to 125°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 60747-6, JEDEC JESD77, MIL-PRF-19500

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

Thermal runaway due to inadequate cooling
dv/dt induced false triggering
Overvoltage breakdown
Gate oxide degradation

FMEA Triads

Trigger: Excessive junction temperature
Failure: Thermal runaway and permanent damage
Mitigation: Implement proper heat sinking, thermal monitoring, and derating guidelines

Trigger: High voltage transients
Failure: Dielectric breakdown of PN junctions
Mitigation: Use snubber circuits, voltage clamping devices, and proper insulation

Trigger: Insufficient gate drive
Failure: Partial turn-on leading to localized heating
Mitigation: Ensure gate current meets minimum specifications with adequate pulse width

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±10% on electrical parameters unless otherwise specified

Test Method

Static and dynamic testing per IEC 60747-6, including VDRM, IH, IGT measurements and thermal cycling

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 SCR (Thyristor) Die

Manufacturer profiles associated with SCR (Thyristor) Die.

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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 SCR die and complete thyristor?

The SCR die is the bare semiconductor chip, while a complete thyristor includes packaging, terminals, heat sinks, and protective coatings for practical use.

How does gate triggering work in SCR die?

A small positive current applied to the gate region injects carriers that initiate conduction between anode and cathode, latching the device until current interruption.

What causes failure in SCR dies?

Common failures include thermal overstress, voltage transients exceeding ratings, improper gate drive, and contamination during manufacturing.

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.

SCR (Thyristor) Die