INDUSTRY COMPONENT

Silicon Diodes

Silicon diodes are semiconductor devices that allow current to flow in one direction, used for rectification in industrial power supplies.

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Component Specifications

Definition
Silicon diodes are electronic components made from silicon semiconductor material with a P-N junction, designed to conduct electric current primarily in one direction (forward bias) while blocking it in the opposite direction (reverse bias). In rectifier stacks/bridges, they convert alternating current (AC) to direct current (DC) by allowing current flow during specific half-cycles of the AC waveform.
Working Principle
Operates based on the P-N junction principle: under forward bias (positive voltage on P-side relative to N-side), the depletion region narrows, allowing current flow; under reverse bias, the depletion region widens, blocking current flow except for minimal leakage.
Materials
Silicon (Si) semiconductor with doping (e.g., boron for P-type, phosphorus for N-type), metal contacts (e.g., aluminum, copper), and encapsulation (e.g., epoxy, ceramic).
Technical Parameters
ParameterTypical rangeNotes & selection driver
Forward Voltage Drop0.7V typical
Operating Temperature-55°C to 175°C
Reverse Recovery Timens to μs range
Maximum Forward Current1A to 100A
Reverse Breakdown Voltage50V to 1000V

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 60747

Parent Products

This component is used in the following industrial products

Rectifier Stack/Bridge

An assembly of diodes arranged to convert alternating current (AC) to direct current (DC) within a rectifier power supply.

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Diode Bridge

An electrical component that converts alternating current (AC) to direct current (DC) using four diodes arranged in a bridge configuration.

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Bridge Rectifier

An electrical component that converts alternating current (AC) to direct current (DC) using a diode bridge configuration.

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Engineering Analysis

Risks & Mitigation
  • Thermal runaway due to overheating
  • Reverse voltage breakdown causing failure
  • Soldering defects leading to poor connections
FMEA Triads
Trigger: Excessive reverse voltage
Failure: Permanent damage to P-N junction
Mitigation: Use diodes with adequate voltage ratings and surge protection circuits.
Trigger: Overcurrent conditions
Failure: Thermal destruction from high power dissipation
Mitigation: Implement current limiting and heat sinking.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±5% on forward voltage, ±10% on reverse current
Test Method
I-V characteristic 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
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 Silicon Diodes

Manufacturer profiles associated with Silicon Diodes.

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Frequently Asked Questions

What is the purpose of silicon diodes in a rectifier stack?

They convert AC input to DC output by allowing current flow in one direction only, essential for power supplies in industrial equipment.

How do silicon diodes differ from other diode types?

Silicon diodes offer higher temperature tolerance and reliability compared to germanium diodes, with a typical forward voltage drop of 0.7V.

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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