IEC 60122-3:2010 PDF

Name: IEC 60122-3:2010 — Quartz crystal units of assessed quality - Part 3: Standard outlines and lead connections
SKU: IEC 60122-3:2010
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Quartz crystal units of assessed quality - Part 3: Standard outlines and lead connections

Название (английский):

IEC 60122-3:2010

Quartz crystal units of assessed quality - Part 3: Standard outlines and lead connections

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 48
Дата публикации:: 11 октября 2010 г.
Издание:: IEC IS 60122 edition 4 version 1
ICS:: 31.140

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Описание (английский):

IEC 60122-3:2010 specifies the outline drawing for quartz crystal units with lead enclosures. The main changes with respect to the previous edition are as follows: 12 of the 48 enclosure types contained in the previous edition have been deleted.

Abstract

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Overview

IEC 60122-3:2010 is an international standard published by the International Electrotechnical Commission (IEC) focusing on quartz crystal units (QCU) of assessed quality. Specifically, Part 3 of this series defines the standard outlines and lead connections for quartz crystal units enclosed in leads. This edition, the fourth, updates and revises the previous standard by streamlining enclosure types-removing 12 of the 48 former enclosure types to better reflect technological progress and current industry practices.

The primary goal of IEC 60122-3:2010 is to ensure mechanical interchangeability and a uniform presentation of quartz crystal unit enclosures, facilitating standardized designs for frequency control and selection devices widely used in electronic systems.

Key Topics

Standard Outlines for Quartz Crystal Units The standard specifies the dimensional and geometrical characteristics of crystal unit enclosures to guarantee compatibility across different manufacturers and applications. It includes detailed outline drawings with dimensional symbols, tabular data for measurements, and actual size sketches drawn using third angle projection.

Lead Connections and Designations While the outline standardizes enclosure dimensions, lead (or termination) functions and identifications are determined separately by agreement between suppliers and users. This separation offers flexibility while maintaining mechanical interchangeability.

Standardization Guidance The document provides detailed guidance on preparing outline drawings:

Use millimeters for all dimensions.
Provide minimum, nominal, and maximum dimensional values for leads.
Outline dimensions A, B, C, D, and E show only maximum values.
Include descriptive notes to clarify specific design features or manufacturing variants.

Enclosure Types and Classifications The fourth edition includes 36 active enclosure types, categorized mostly as metal, welded, two- or three-lead crystal units, with variations for cylindrical shapes and automatic handling. Each enclosure type is accompanied by detailed mechanical drawings illustrating critical dimensions.

Updates and Revisions This edition deleted obsolete enclosure types identified in earlier releases-reflecting advances in quartz crystal manufacturing and improving relevance for modern applications.

Applications

IEC 60122-3:2010 is essential for professionals in electronic component manufacturing, design engineering, and quality assurance who work with quartz crystal units in frequency control systems. The standard supports:

Mechanical Interchangeability Facilitates the use of quartz crystal units from multiple suppliers without redesigning circuit boards or mounting interfaces, reducing costs and design iteration time.

Quality Assurance in Production Provides consistent dimensional references to ensure that crystal units meet assessed quality performance and reliability metrics, important in telecommunications, computing, and precision instrumentation.

Component Specification and Sourcing Helps procurement teams specify and source crystal units conforming to internationally accepted outlines, avoiding mismatches and supply chain issues.

Standard Compliance and Certification Aligns with IEC’s international framework supporting regulatory compliance and enhancing interoperability of electronic components globally.

Related Standards

IEC 60122 Series IEC 60122 includes multiple parts that collectively define requirements for quartz crystal units of assessed quality, covering aspects beyond outlines such as performance, testing methods, and environmental conditions.

ISO/IEC Directives The standard follows ISO/IEC Directives Part 2 for drafting and maintaining clarity and uniformity in international technical standards documentation.

Frequency Control Device Standards Related IEC standards address other frequency control and selection devices, including resonators, filters, and oscillators, complementing IEC 60122-3 for comprehensive frequency device regulation.

IEC 60122-3:2010 is a critical reference for ensuring that quartz crystal units maintain consistent physical configurations and connections, fostering reliable integration into electronic systems requiring precise frequency control. Its focus on standard outlines and lead connections provides manufacturers, designers, and users a practical framework for quality and interoperability in modern electronic applications.

IEC 60122-3:2010 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

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