Mechanical Mounting Plate: Parallelism ≤ 0.015 mm

Component Specifications

Definition

The Mechanical Mounting Plate is a critical structural component in probe card interface systems that provides rigid, stable, and precisely aligned mounting for probe cards during semiconductor wafer testing. It ensures proper electrical contact between the probe card and wafer test equipment while maintaining dimensional stability under thermal and mechanical loads.

Working Principle

Provides a flat, rigid reference surface with precisely machined mounting holes and alignment features to secure the probe card in exact position relative to the wafer test equipment. Maintains mechanical integrity and alignment during repeated test cycles.

Materials

Aluminum 6061-T6 or 7075-T6 for lightweight rigidity, or Stainless Steel 304/316 for higher stiffness and thermal stability. Surface finish: Ra ≤ 0.8 μm. May include ceramic or composite inserts for thermal management.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flatness	≤ 0.025 mm over entire surface
Thickness	10-25 mm (depending on application)
Parallelism	≤ 0.015 mm
Surface Hardness	≥ 80 HRB for aluminum, ≥ 25 HRC for steel
Mounting Hole Tolerance	H7
Thermal Expansion Coefficient	Matched to probe card materials

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 1101, ISO 2768, DIN 7168, SEMI E10

Parent Products

This component is used in the following industrial products

Probe Card Interface

Electrical and mechanical interface connecting the probe card to the test head/controller in semiconductor testing equipment.

View Product Details

Engineering Analysis

Risks & Mitigation

Misalignment due to thermal expansion
Fatigue failure from cyclic loading
Surface wear affecting flatness
Corrosion in humid environments

FMEA Triads

Trigger: Thermal cycling during testing
Failure: Loss of flatness and alignment
Mitigation: Use materials with matched thermal expansion coefficients; implement thermal management; regular calibration checks

Trigger: Repeated mechanical loading during probe card changes
Failure: Mounting hole wear and loosening
Mitigation: Use wear-resistant inserts; proper torque control during installation; scheduled replacement

Trigger: Environmental contamination
Failure: Surface corrosion or particle accumulation
Mitigation: Protective coatings; cleanroom compatibility; regular cleaning protocols

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Geometric tolerances per ISO 1101; dimensional tolerances per ISO 2768-m

Test Method

Coordinate Measuring Machine (CMM) verification; laser interferometry for flatness; thermal cycling tests per SEMI 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 Mechanical Mounting Plate

Manufacturer profiles associated with Mechanical Mounting Plate.

Sourcing Mechanical Mounting Plate from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

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

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

Related Components

Serial Interface

Serial interface for industrial data transmission between IoT gateways and legacy equipment using RS-232/422/485 protocols.

Marking Ink

Specialized ink for permanent identification on surface mount resistors during manufacturing.

Dielectric Layer

Insulating layer in surface mount capacitors that stores electrical energy through polarization.

Optical Window

Transparent optical component for light transmission in polycarbonate lens housings

Frequently Asked Questions

What is the primary function of a mechanical mounting plate in probe card interfaces?

The primary function is to provide precise, stable, and repeatable mounting for probe cards, ensuring accurate alignment with wafer test equipment and maintaining electrical contact integrity during semiconductor testing.

Why is material selection critical for mounting plates?

Material selection affects thermal stability, mechanical rigidity, weight, and compatibility with probe card materials. Proper material matching minimizes thermal expansion mismatches that could cause alignment errors during temperature cycling.

How often should mounting plates be inspected for wear?

Inspect every 50,000 test cycles or quarterly, whichever comes first. Check for flatness degradation, mounting hole wear, and surface damage that could affect probe card alignment.

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.

Mechanical Mounting Plate