Overview
IEC 60862-3:2003 is an international standard published by the International Electrotechnical Commission (IEC) for Surface Acoustic Wave (SAW) filters of assessed quality. This standard specifically addresses the standard outlines-or dimensional and geometrical characteristics-of SAW filters housed in leaded enclosures. Part 3 of the IEC 60862 series, it provides detailed specifications aimed at ensuring mechanical interchangeability and uniformity in the design and manufacturing of SAW filter enclosures.
Developed by IEC Technical Committee 49, which focuses on piezoelectric and dielectric devices for frequency control and selection, this second edition updates the original 1986 version by refining the list of standardized enclosures to those most widely used in industry. Its goal is to support manufacturers, designers, and users by facilitating compatibility and reliable quality assurance across global applications.
Key Topics
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Scope and Purpose
Defines the outline drawings for SAW filters featuring leaded enclosures, ensuring clear, consistent mechanical interface standards.
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Standardized Outline Drawings
Provides guidance on the presentation of dimensional drawings, including:
- Use of symbols and capital letters for dimension references
- Inclusion of detailed tables with actual dimension values
- Provision of full-scale (1:1) representations
- Compliance with third-angle projection technique as per international drawing standards
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Dimensioning Rules
Specifies key dimensional characteristics such as:
- Maximum values for primary enclosure dimensions (A, B, C, D, E)
- Maximum, minimum, and nominal values for lead (terminal) dimensions and spacing (symbol H)
- Expressing all dimensions in millimeters for standardization
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Design Notes and Instructions
Advises on annotating drawings with descriptive notes, placement of terminal function information based on agreement between supplier and user, and ensuring clarity for mechanical interchangeability.
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Removal of Obsolete Enclosures
Streamlines the standard by removing five enclosure types from the 1986 edition that became obsolete due to technological advances, focusing only on those still widely used as of the 1996 review.
Applications
IEC 60862-3:2003 is essential for organizations involved in the manufacturing, design, testing, and procurement of SAW filters used in frequency control and selection devices. Common practical uses include:
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Telecommunications and Wireless Systems
Ensures reliable specifications for SAW filters incorporated in radios, base stations, and mobile devices.
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Electronic Frequency Control Devices
Supports uniformity across SAW-based frequency selectors and oscillators crucial for timing and signal processing.
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Quality Assurance and Testing Laboratories
Provides a reference for physical conformance testing of SAW filter enclosures and ensuring interchangeability.
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Component Suppliers and Users
Assists in clear communication of mechanical specifications to avoid mismatches and non-compliance in assembly lines or end-user applications.
Related Standards
- IEC 60862-1: Generic specifications for SAW filters of assessed quality
- IEC 60862-2: Guidance on the use of SAW filters
- IEC 60862-4 / 4-1 / 5 / 5-1: Various sectional specifications for capability approval and qualification approval of SAW filters
These complementary parts of the IEC 60862 series provide a comprehensive framework covering general requirements, usage guidance, detailed technical approvals, and quality assurance for SAW filters.
By standardizing the outlines of SAW filter enclosures, IEC 60862-3:2003 plays a crucial role in fostering international uniformity, ensuring component interchangeability, and supporting ongoing technological advancements in surface acoustic wave filter applications. This standard is a key resource for professionals seeking precise, globally recognized mechanical specifications in the field of electronic frequency control devices.