IEC TR 63018:2015 PDF

Name: IEC TR 63018:2015 — Flexible printed circuit boards (FPCBs) - Method to decrease signal loss by using noise suppression materials
SKU: IEC TR 63018:2015
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Flexible printed circuit boards (FPCBs) - Method to decrease signal loss by using noise suppression materials

Название (английский):

IEC TR 63018:2015

Flexible printed circuit boards (FPCBs) - Method to decrease signal loss by using noise suppression materials

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 32
Дата публикации:: 16 декабря 2015 г.
Издание:: IEC TR 63018 edition 1 version 1
ICS:: 27.140

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Описание (английский):

IEC TR 63018:2015(E) specifies a guideline for improvement of signal loss by using noise suppression materials (hereafter referred to as NSMs) for FPCBs. This Technical Report also indicates a measuring method of signal loss variations of FPCBs using NSMs using network analyzer equipment. In addition, this method only measures the value of the signal loss variation by using NSMs for FPCBs. This report, however, neither determines nor indicates the structure or material of FPCBs.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты IEC

Overview

IEC TR 63018:2015 provides a guideline and measurement method for assessing and improving signal loss in flexible printed circuit boards (FPCBs) when applying noise suppression materials (NSMs). The Technical Report defines test specimen design and a network-analyzer-based procedure to measure the variation in transmission loss introduced by NSMs (i.e., comparing a bare FPCB to a shield FPCB). The report does not prescribe FPCB structures or materials beyond the measurement method - it focuses on quantifying the effect of NSMs on high‑frequency signal loss.

Key topics and technical requirements

Measurement approach

Use of a network analyzer to record S-parameters (S11, S21) and quantify transmission loss over a specified frequency range.
Block diagram and example setup for signal-loss measurement (including coaxial cables and SMA terminals).

Test specimen design

Comparative coupons containing both bare and shielded regions on the same board to enable uniform, side‑by‑side measurement.
Specimen length recommended to be over 5 cm for stable results.
Use of SMA connectors on specimen ends; Cu trace widths selected within manufacturing tolerances.
Via holes are important to ensure electrical contact between NSM/shield conductive adhesive and ground; size/spacing to be agreed between user and supplier (AABUS).

Shield region cross-section (example values from the report)

Shield insulation layer: 5 µm
Shield conductive layer: 0.1 / 2 µm (as shown in the illustrative cross‑section)
Shield conductive adhesive layer: 10 µm
Copper conductor examples: ~23 µm, PI and adhesive layer thicknesses listed in the figure.

Test procedure elements

Preparation steps: lamination of NSM to half the board, marking trace widths, connector attachment.
Measurement setup: network analyzer configuration (frequency range, dielectric constant), connection via SMA/coax, data capture, calculation and analysis of signal loss variation (bare vs shielded).

Analysis and improvement

Methods to assess how NSMs increase signal loss and recommendations for design or material selection to minimize signal degradation while achieving EMI suppression.

Applications and users

IEC TR 63018 is practical for:

FPCB manufacturers and designers optimizing high‑frequency signal integrity while applying NSMs.

NSM suppliers validating absorber performance and impact on transmission loss.

Test laboratories and QA teams performing comparative measurements on shielded vs bare FPCBs.

Electronics OEMs (smartphones, tablets, display and mobile devices) specifying acceptance criteria for FPCB EMI mitigation.

Keywords naturally included: flexible printed circuit boards, FPCBs, noise suppression materials (NSMs), signal loss, EMI suppression, network analyzer, SMA, shield FPCB, transmission loss.

IEC TR 63018:2015 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

IEC 62333-1:2006

Noise suppression sheet for digital devices and equipment - Part 1: Definitions and general properties

IEC 60050-161:1990/AMD2:1998

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