PCB Assembly Fixture

Product Specifications

Technical details and manufacturing context for PCB Assembly Fixture

Definition

A PCB assembly fixture is a precision-engineered jig or holding device designed to accurately position and secure printed circuit boards during various assembly operations such as component placement, soldering, inspection, and testing. These fixtures ensure consistent alignment, prevent board movement, and facilitate efficient, high-quality manufacturing by providing stable support throughout the assembly workflow. The fixture typically accommodates PCBs up to 400×300 mm and supports board thicknesses from 0.8 to 2.4 mm, with a positional accuracy of ±0.05 mm and repeatability of ±0.02 mm. Clamping force ranges from 50 to 200 N, and weight capacity is 5–10 kg. The fixture maintains dimensional stability within an operating temperature range of -20 to +80 °C. Materials commonly used include aluminum alloy, stainless steel, and engineering plastics, with specific grades such as Aluminum 6061, stainless steel, and PEEK available. Surface flatness is 0.02 mm, and ESD protection provides surface resistance of 10^6–10^9 Ω, referencing IEC 61340-5-1. Tooling pin hole diameters are 3.0–4.0 mm. The fixture's weight varies from 3 to 8 kg depending on size and material. These specifications are reference ranges and must be verified for the specific model and application. Always confirm model-specific values and applicable standards with the legal manufacturer or supplier before procurement.

Working Principle

The fixture operates by mechanically clamping or securing the PCB in a predetermined position using adjustable or custom-designed locators, pins, and retention mechanisms. It interfaces with assembly equipment to maintain precise board alignment, allowing automated or manual processes to be performed with repeatable accuracy. Some advanced fixtures incorporate pneumatic or vacuum systems for secure holding without physical contact that could damage components. The fixture's design ensures uniform support and consistent positioning across cycles, contributing to reliable assembly outcomes.

Common Materials

Aluminum Alloy, Stainless Steel, Engineering Plastics

Technical Parameters

Parameter	Typical range	Notes & selection driver
Maximum PCB SizeRequired	400×300 mm	Largest printed circuit board dimensions the fixture can accommodate (length x width)
Fixture AccuracyRequired	±0.05 mm	Positional accuracy of board placement within the fixture
Clamping Force	50–200 N	Maximum force applied to secure the PCB without damage
Weight CapacityRequired	5–10 kg	Maximum weight of PCB and components the fixture can support
Operating Temperature Range	-20–+80 °C	Temperature range within which the fixture maintains dimensional stability
Material	Aluminum 6061, stainless steel, PEEK	ESD-safe coating availableASTM B209, ASTM A240
Surface Flatness	0.02 mm	Ensures uniform support
Repeatability	±0.02 mm	Consistent positioning across cycles
ESD Protection	10^6–10^9 Ω	Surface resistance rangeIEC 61340-5-1
Weight	3–8 kg	Depends on size and material
Compatible PCB Thickness	0.8–2.4 mm	Standard board thicknessesIPC-2221
Pin Hole Diameter	3.0–4.0 mm	For tooling holes

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

Base Plate Part
Provides structural foundation and mounting surface for all fixture components

Material: Aluminum alloy or steel plate
Locator Pins Part
Precisely position the PCB using board holes or edges as reference points

Material: Stainless steel or hardened tool steel
Clamping Mechanism
Secures the PCB in place during assembly operations

Material: Steel components with plastic or rubber contact surfaces
Support Pads Part
Provide even support across the PCB surface to prevent bending or warping

Material: Silicone, rubber, or engineered plastic
Mounting Brackets Part
Allow fixture attachment to assembly equipment or workstations

Material: Aluminum or steel
Vacuum Systems Optional
Hold the board by suction without physical contact that could damage components.
Pneumatic Systems Optional
Air-driven clamping used on the advanced fixture variants.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for PCB Assembly Fixture.

Manufacturers of PCB Assembly Fixture

Manufacturer profiles associated with PCB Assembly Fixture.

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Frequently Asked Questions

What is the maximum PCB size that can be accommodated?

The fixture can accommodate PCBs up to 400×300 mm (length × width). This is a reference range; confirm the exact capacity for the specific model.

What is the positional accuracy of the fixture?

The fixture provides a positional accuracy of ±0.05 mm and repeatability of ±0.02 mm. These values are typical and should be verified for the specific model.

Does the fixture provide ESD protection?

Yes, the fixture offers ESD protection with a surface resistance range of 10^6–10^9 Ω, referencing IEC 61340-5-1. However, compliance should be confirmed with the manufacturer.

What materials are used in the fixture?

Common materials include aluminum alloy, stainless steel, and engineering plastics. Specific grades such as Aluminum 6061, stainless steel, and PEEK are available. Material selection affects weight and durability.

Data Basis

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

Preliminary Technical Classification

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pressure:	Max 5 bar clamping pressure, 0.5 bar vacuum hold-down
other spec:	PCB thickness range: 0.4mm to 3.2mm, positioning accuracy: ±0.05mm, max PCB size: 400x300mm
temperature:	20°C to 80°C (operational), -10°C to 120°C (storage)

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards