IEC 63182-6-2025 PDF

Full title and description

St IEC 63182-6-2025 — Magnetic powder cores — Guidelines on dimensions and the limits of surface irregularities — Part 6: EQ-cores. This document specifies preferred dimensions for mechanical interchangeability of EQ-type metallic magnetic powder cores, describes essential coil-former dimensions and effective parameter values for calculations, and gives guidance on allowable surface irregularities to be used in supplier–customer agreements.

Abstract

Part 6 of IEC 63182 provides dimensional specifications and permissible surface-irregularity limits for EQ-cores made of metallic magnetic powder. It assists manufacturers and users in specifying interchangeable core sizes, selecting compatible coil formers, and agreeing tolerances for surface defects; Annex A discusses the use of “derived” standards for more detailed component-level specifications.

General information

• Status: Published / Definitive (active).
• Publication date: 28 August 2025 (IEC base publication).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 29.100.10 (Magnetic components).
• Edition / version: Edition 1.0 (2025).
• Number of pages: 11 (IEC base publication; some national adoptions/implementations list alternative page counts for their published national texts).

Key bibliographic details above are taken from the IEC publication record; national adoptions (for example BS IEC 63182-6:2025) are available and may show different presentation or pagination.

Scope

This part of IEC 63182 specifies the dimensions important for mechanical interchangeability for a preferred range of EQ-cores made of metallic magnetic powder. It defines essential dimensions for compatible coil formers, gives effective parameter values for use in calculations involving these cores, and provides guidelines on allowable surface irregularities applicable to EQ-cores; the document is intended as a specification to support negotiations between manufacturers and customers regarding surface irregularities.

Key topics and requirements

• Preferred dimensional ranges for EQ magnetic powder cores to ensure mechanical interchangeability.
• Essential dimensions and tolerances for coil formers to be used with EQ-cores.
• Effective parameter values (for use in electromagnetic and mechanical calculations) associated with the specified core forms.
• Guidelines and allowable limits for surface irregularities (to be used in supplier–customer agreements).
• Guidance on the use of “derived” standards for more detailed component specifications (see Annex A).

Typical use and users

Used by magnetic core manufacturers, designers of inductors and transformers, component procurement and quality engineers, and standards committees defining component interchangeability and acceptance criteria. The document supports specification writing, supplier negotiations on surface finish and tolerances, and mechanical/electrical design calculations.

Related standards

Part 6 is one part of the IEC 63182 series on magnetic powder cores (see IEC 63182-1:2020 for the general specification). Other related parts address different core shapes (for example IEC 63182-4:2021 for block-cores and IEC 63182-8:2025 for U-cores) and related nomenclature standards referenced by the series. National adoptions (e.g., BS IEC 63182-6:2025) reproduce the IEC text for use in specific markets.

Keywords

Magnetic powder cores, EQ-cores, dimensions, mechanical interchangeability, coil formers, surface irregularities, tolerances, magnetic components, IEC 63182.

FAQ

Q: What is this standard?

A: IEC 63182-6:2025 is Part 6 of the IEC 63182 series; it provides guidelines on dimensions and allowable surface irregularities specifically for EQ-type magnetic powder cores.

Q: What does it cover?

A: It covers preferred dimensional ranges for mechanical interchangeability, coil-former dimensions, effective parameter values for calculations, and guidance on acceptable surface irregularities to be used in supplier–customer agreements.

Q: Who typically uses it?

A: Manufacturers of magnetic powder cores, component and magnetic-design engineers, procurement and quality teams, and standards bodies developing component specifications and interchangeability rules.

Q: Is it current or superseded?

A: IEC 63182-6:2025 is a current IEC publication (base publication date 28 August 2025). The IEC record lists the stability date and edition information for lifecycle planning; national adoptions also show active status. Users should check national publication records if they rely on a specific national implementation.

Q: Is it part of a series?

A: Yes — IEC 63182 is a multipart series covering magnetic powder cores and surface-irregularity guidance; Part 1 is the general specification and other parts cover different core geometries (e.g., Part 4 block-cores, Part 8 U-cores, etc.).

Q: What are the key keywords?

A: Magnetic powder cores, EQ-cores, dimensions, mechanical interchangeability, coil formers, surface irregularities, tolerances, magnetic components.