Semiconductor Substrate: Diameter 150mm, 200mm, 300mm

Component Specifications

Definition

A semiconductor substrate is a critical component in active electronic devices, serving as the base material upon which semiconductor layers, circuits, and active components are fabricated. It provides mechanical support, thermal management, and electrical connectivity for integrated circuits, transistors, diodes, and other semiconductor elements. The substrate's properties directly influence device performance, reliability, and manufacturing yield.

Working Principle

The semiconductor substrate functions by providing a stable crystalline or polycrystalline foundation with specific electrical, thermal, and mechanical properties. It enables epitaxial growth of semiconductor layers, facilitates doping processes, and supports photolithographic patterning. The substrate's lattice structure and purity allow controlled electron and hole movement, while its thermal conductivity dissipates heat generated during device operation.

Materials

High-purity silicon (monocrystalline), gallium arsenide (GaAs), silicon carbide (SiC), gallium nitride (GaN), sapphire (Al₂O₃), germanium (Ge), with dopants like boron, phosphorus, arsenic, or antimony. Silicon wafers typically 150mm, 200mm, or 300mm diameter with thickness 525-775μm.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	150mm, 200mm, 300mm
Flatness	<10μm TTV
Thickness	525-775μm
Orientation	<100>, <111>
Resistivity	1-100 Ω·cm
Particle Count	<10 particles/cm² (>0.3μm)
Surface Finish	Polished, Epitaxial-ready

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 14644, SEMI M1, SEMI M59, DIN EN 60749

Parent Products

This component is used in the following industrial products

Active Device

Electronic component that requires external power to operate and can amplify, switch, or process signals

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Engineering Analysis

Risks & Mitigation

Crystal defects affecting device performance
Contamination from particles or impurities
Wafer warpage during thermal processing
Micro-cracks from mechanical stress
Electrical property variations across wafer

FMEA Triads

Trigger: Crystal growth imperfections
Failure: Reduced carrier mobility, increased leakage current
Mitigation: Strict control of Czochralski or Float Zone growth parameters, post-growth annealing

Trigger: Surface contamination during handling
Failure: Yield loss from defective devices, reliability issues
Mitigation: Cleanroom protocols, automated handling systems, regular particle monitoring

Trigger: Thermal mismatch with deposited layers
Failure: Wafer warpage, film cracking, delamination
Mitigation: CTE matching in material selection, controlled ramp rates during thermal processing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Diameter ±0.2mm, Thickness ±15μm, Resistivity ±10%, Orientation ±0.5°

Test Method

Four-point probe resistivity measurement, X-ray diffraction for crystal orientation, surface profilometry for flatness, laser particle counting for contamination

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 Semiconductor Substrate

Manufacturer profiles associated with Semiconductor Substrate.

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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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PCB substrate is the foundational insulating layer that provides mechanical support and electrical connectivity for electronic components in high-speed memory modules.

Edge Connector

Edge connector is a printed circuit board (PCB) connector that mates with the edge of another PCB, commonly used in high-speed memory modules for reliable electrical connections.

Frequently Asked Questions

What is the difference between a semiconductor substrate and a printed circuit board?

A semiconductor substrate is the base material for fabricating semiconductor devices at microscopic scales, while a printed circuit board interconnects completed components at macroscopic scales. Substrates have precise crystalline structures and purity requirements that PCBs do not require.

Why is silicon the most common semiconductor substrate material?

Silicon dominates due to its excellent semiconductor properties, natural abundance, stable oxide formation (SiO₂), mature manufacturing infrastructure, and cost-effectiveness compared to compound semiconductors like GaAs or SiC.

What determines substrate thickness in semiconductor manufacturing?

Substrate thickness balances mechanical strength for handling during fabrication with thermal conductivity for heat dissipation. Thinner substrates improve thermal performance but require more careful handling, while thicker substrates provide better mechanical stability.

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.

Semiconductor Substrate