Test Fixture for Electrical Testing | Industrial Component Directory

Product Specifications

Technical details and manufacturing context for Test Fixture

Definition

A test fixture is an essential component of an Electrical Testing Station that provides precise mechanical positioning and electrical connectivity for devices under test (DUTs). It ensures consistent contact alignment, facilitates automated testing, and protects sensitive components during electrical parameter measurement. The fixture is designed to hold a DUT securely in a predetermined position, establishing reliable electrical connections through contact pins, probes, or sockets. It interfaces between the testing equipment and the DUT, enabling the transmission of test signals and measurement of responses. Typical materials include aluminum alloy, stainless steel, copper alloy contacts, and insulating polymers. Key parameters include clamping force (50–500 N), contact resistance (10–50 mΩ per contact, per IEC 60512-2), positioning accuracy (±0.05–±0.1 mm), cycle time (2–10 s), operating temperature (0–60 °C), and service life (100,000–1,000,000 cycles). Contact materials may be beryllium copper (C17200) or phosphor bronze (C51000) per ASTM B194/B103; body materials may be aluminum 6061-T6 or stainless steel 304 per ASTM B221/A240; insulation materials may be PTFE or FR-4 per ASTM D4894/IPC-4101. The fixture supports up to 1000 contact points, maximum test voltage up to 1000 V (per IEC 61010-1), and maximum test current up to 10 A per contact. Actuation can be manual, pneumatic, or motorized, with utilities such as 80–120 psi compressed air or 24 V DC. Interface types include standard 0.1" header, edge connector, or custom. Environmental limits: 20–80% RH non-condensing humidity, up to 30 cycles/min. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The test fixture mechanically clamps or holds the device under test in a predetermined position, establishing reliable electrical connections through contact pins, probes, or sockets. It interfaces between the testing equipment and the DUT, enabling the transmission of test signals and measurement of responses. The fixture ensures consistent contact alignment, facilitates automated testing, and protects sensitive components during electrical parameter measurement.

Common Materials

Aluminum alloy, Stainless steel, Copper alloy contacts, Insulating polymers

Technical Parameters

Parameter	Typical range	Notes & selection driver
Clamping Force	50–500 N	50–500 — Adjustable to secure DUT without damage. Adjustable to secure DUT without damage.
Contact Resistance	10–50 mΩ	10–50 — Measured per contact at specified force. Measured per contact at specified force.IEC 60512-2
Positioning Accuracy	±0.05–±0.1 mm	±0.05–±0.1 — Repeatability of DUT placement. Repeatability of DUT placement.
Cycle Time	2–10 s	2–10 — Time to load, clamp, and establish contact. Time to load, clamp, and establish contact.
Operating Temperature	0–60 °C	0–60 — Ambient range for reliable operation. Ambient range for reliable operation.
Contact Material	Beryllium copper (C17200) or phosphor bronze (C51000)	Beryllium copper (C17200) or phosphor bronze (C51000) — Gold-plated for corrosion resistance. Gold-plated for corrosion resistance.ASTM B194, ASTM B103
Body Material	Aluminum 6061-T6 or stainless steel 304	Aluminum 6061-T6 or stainless steel 304 — Aluminum for weight reduction, steel for durability. Aluminum for weight reduction, steel for durability.ASTM B221, ASTM A240
Insulation Material	PTFE (Teflon) or FR-4	PTFE (Teflon) or FR-4 — High dielectric strength, low moisture absorption. High dielectric strength, low moisture absorption.ASTM D4894, IPC-4101
Number of Contact Points	10–1000 pins	10–1000 — Depends on DUT complexity. Depends on DUT complexity.
Maximum Test Voltage	100–1000 V	100–1000 — Dielectric withstand voltage between contacts and ground. Dielectric withstand voltage between contacts and ground.IEC 61010-1
Maximum Test Current	1–10 A	1–10 — Per contact, continuous. Per contact, continuous.
Service Life	100,000–1,000,000 cycles	100,000–1,000,000 — Mechanical actuation cycles before wear-out. Mechanical actuation cycles before wear-out.
Interface Type	Standard 0.1" header, edge connector, or custom	Standard 0.1" header, edge connector, or custom — Must match test equipment interface. Must match test equipment interface.
Actuation Type	Manual, pneumatic, or motorized	Manual, pneumatic, or motorized — Manual for low volume, pneumatic for automation. Manual for low volume, pneumatic for automation.
Utilities Required	80–120 psi compressed air (if pneumatic), 24 V DC (if motorized) psi, V	80–120 psi compressed air (if pneumatic), 24 V DC (if motorized) — Specify based on actuation type. Specify based on actuation type.
Temperature	0–60 °C	0–60 °C — Outside this window: Insulation degradation, contact oxidation, dimensional changes causing misalignment. Outside this window: Insulation degradation, contact oxidation, dimensional changes causing misalignment.
Humidity	20–80 % RH non-condensing	20–80 % RH non-condensing — Outside this window: Corrosion of contacts, electrical leakage, insulation breakdown. Outside this window: Corrosion of contacts, electrical leakage, insulation breakdown.
Test Voltage	Up to 1000 V	Up to 1000 V — Outside this window: Arc-over, insulation failure, safety hazard. Outside this window: Arc-over, insulation failure, safety hazard.
Test Current	Up to 10 A per contact	Up to 10 A per contact — Outside this window: Contact overheating, solder joint failure, resistance increase. Outside this window: Contact overheating, solder joint failure, resistance increase.
Cycle Rate	Up to 30 cycles/min	Up to 30 cycles/min — Outside this window: Mechanical wear, pneumatic valve fatigue, reduced service life. Outside this window: Mechanical wear, pneumatic valve fatigue, reduced service life.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Fixture Base Plate Part
Provides structural foundation and mounting interface

Material: Aluminum alloy
Contact Probes Part
Establish electrical connections with device under test

Material: Beryllium copper
Clamping Mechanism
Secures device under test in precise position

Material: Stainless steel
Interface Connector Part
Connects fixture to testing equipment cables

Material: Plastic housing with gold-plated contacts

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Electrical Testing Station

View system integration details

Manufacturers of Test Fixture

4 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.

China Pogo Pin Supplier

Jiangsu, CN

Also makes: Temperature Probe, Probes, Printed Circuit Boards and 1 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Shenzhen Wance Testing Machine Co., Ltd.

Shanghai, CN

Also makes: Environmental Chamber, Automation System

Listed on the company's own website · profile compiled by CNFX from public sources

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Tortai Technologies Co., Ltd.

Dongguan, Guangdong, CN

Also makes: Assembly Fixture, User Interface, Rigid-Flex PCB and 6 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Venture Electronics

Guangdong, CN

Also makes: Rf Pcb, Heavy Copper PCB, Metal Core PCB and 8 more

Listed on the company's own website · profile compiled by CNFX from public sources

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

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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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the typical clamping force range for a test fixture?

The clamping force is adjustable to secure the DUT without damage, typically ranging from 50 to 500 N. The exact value depends on the DUT's size and fragility; always confirm with the manufacturer for your specific application.

What standards apply to contact resistance and test voltage?

Contact resistance is measured per contact at specified force and typically ranges from 10 to 50 mΩ, per IEC 60512-2. Maximum test voltage is up to 1000 V, per IEC 61010-1. These standards serve as procurement references; verify compliance with the supplier.

What materials are commonly used for contacts and body?

Contacts are often gold-plated beryllium copper (C17200) or phosphor bronze (C51000), per ASTM B194/B103. Body materials include aluminum 6061-T6 or stainless steel 304, per ASTM B221/A240. Insulation may be PTFE or FR-4, per ASTM D4894/IPC-4101.

How does actuation type affect fixture operation?

Manual actuation is suitable for low-volume testing, while pneumatic or motorized actuation enables automation. Pneumatic systems require 80–120 psi compressed air; motorized systems use 24 V DC. Choose based on cycle time and production volume.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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.