INDUSTRY COMPONENT

High-Voltage Diode

High-voltage diode for voltage multiplier circuits in industrial applications

Component Specifications

Definition
A semiconductor device designed to allow current flow in one direction while blocking reverse current at high voltage levels, specifically engineered for voltage multiplier circuits that generate DC voltages higher than the input AC voltage through cascaded rectification stages.
Working Principle
Operates on PN junction semiconductor physics, where forward bias allows electron-hole recombination for current conduction, while reverse bias creates a depletion region that blocks current flow. In voltage multiplier circuits, multiple diodes work with capacitors in ladder configurations (Cockcroft-Walton, Villard circuits) to progressively add voltage peaks from AC input, achieving voltage multiplication through charge pumping and storage mechanisms.
Materials
Silicon (Si) or silicon carbide (SiC) semiconductor wafer with doped regions, aluminum or gold wire bonding, ceramic or epoxy encapsulation, nickel-plated copper leads, glass passivation layer
Technical Parameters
ParameterTypical rangeNotes & selection driver
Capacitance1-10 pF
Forward Current100 mA - 5 A
Breakdown Voltage15-120 kV
Forward Voltage Drop0.7-1.2 V
Junction Temperature-55°C to +175°C
Reverse Recovery Time50 ns - 1 μs
Peak Inverse Voltage (PIV)10-100 kV

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, MIL-PRF-19500, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Dielectric breakdown under overvoltage
  • Thermal runaway from excessive current
  • Partial discharge in contaminated environments
  • Mechanical stress cracking from thermal cycling
FMEA Triads
Trigger: Voltage transients exceeding PIV rating
Failure: Catastrophic junction breakdown
Mitigation: Implement snubber circuits, use diodes with 20% voltage margin, install surge protection devices
Trigger: Insufficient heat sinking
Failure: Thermal runaway and permanent damage
Mitigation: Calculate thermal resistance, use proper heatsinks, monitor junction temperature with sensors
Trigger: Contamination on diode surface
Failure: Surface tracking and insulation failure
Mitigation: Apply conformal coating, maintain clean environment, use hermetically sealed packages

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±5% on breakdown voltage, ±10% on forward voltage
Test Method
IEC 60747-1 for semiconductor devices, reverse bias leakage current measured at 80% of rated voltage, high-potential testing per IEC 61010

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 High-Voltage Diode

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Anshan Suly Electronics Co. Ltd.
Anshan, Liaoning, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “PD8-Series SMD High Voltage Diodes”
View source page ↗ hvdiode.com · checked 2026-08-29
Rugao Lian Tuo Electronics Co.,Ltd
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “High Voltage Diode”
View source page ↗ electronic-diode.com · checked 2026-08-29
Yangzhou Positioning Tech Co., Ltd.
Yangzhou, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “15kv 100ma 2cl2fl high voltage diodes”
View source page ↗ yzpst.com · checked 2026-09-06

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the main difference between standard diodes and high-voltage diodes?

High-voltage diodes have thicker depletion regions and specialized construction to withstand reverse voltages from 10kV to over 100kV, compared to standard diodes typically rated below 1kV. They feature graded junctions, field plates, and passivation layers to prevent voltage breakdown.

Why are voltage multiplier circuits important in industrial applications?

They enable generation of high DC voltages from lower AC inputs without bulky transformers, essential for X-ray equipment, electrostatic precipitators, laser power supplies, and particle accelerators where compact high-voltage sources are required.

How does temperature affect high-voltage diode performance?

Increased temperature reduces breakdown voltage (negative temperature coefficient) and increases leakage current. Silicon carbide diodes maintain better high-temperature performance than silicon diodes due to wider bandgap.

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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