SIST EN 61249-3-3:2001

• Abstract:

  Gives requirements for flexible polyester (PETP) films coated on one side or both with polyester, acrylic or epoxide type adhesive for use in the fabrication of flexible printed wring. Films coated on only one side are used as a coverlay or covercoat in the fabrication of flexible printed wiring. This coverlay or covercoat is also used to provide local support to areas subjected to mechanical or environmental stress. Films coated on both sides are used as bonding films in the fabrication of printed boards.

• Status: Published
• Publication Date: 28-Feb-2001
• ICS: 31.180 - Printed circuits and boards
• Technical Committee: ITIV - Electronics assembly technology and Environmental standardization
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2001
• Due Date: 01-Mar-2001
• Completion Date: 01-Mar-2001
• Ref Project: EN 61249-3-3:1999 - Materials for printed boards and other interconnecting structures - Part 3-3: Sectional specification set for unreinforced base materials, clad and unclad (intended for flexible printed boards) - Adhesive coated flexible polyester film

• Refers: SIST EN 61189-2:2001 - Test methods for electrical materials, printed boards and other interconnection structures and assemblies -- Part 2: Test methods for materials for interconnection structures
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60249-1:2002 - Base materials for printed circuits -- Part 1: Test methods
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 115-1:2017 - Safety of escalators and moving walks - Part 1: Construction and installation
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 115-1:2009+A1:2010 - Safety of escalators and moving walks - Part 1: Construction and installation
• Effective Date: 09-Feb-2026

SIST EN 61249-3-3:2001 is the Slovenian standard for adhesive coated flexible polyester film used in printed boards and other interconnecting structures. It adopts EN 61249-3-3:1999 and specifies flexible polyester (PETP) films coated with polyester, acrylic or epoxide adhesive. In practice, it is the reference used when selecting coverlay, covercoat or bonding film for flexible printed wiring.

What does SIST EN 61249-3-3:2001 specify?

SIST EN 61249-3-3:2001 specifies requirements for flexible PETP films coated on one side or on both sides with adhesive for use in flexible printed wiring. The document separates the film types by coating arrangement because each one has a different role in the finished assembly.

The scope covers two main uses:

• one-sided coated films used as coverlay or covercoat, including local support in areas exposed to mechanical or environmental stress
• both-sided coated films used as bonding films in printed boards

For a reader, that means the standard is aimed at selecting the right film construction for protection, support or lamination in flexible electronic interconnects.

What are the key requirements of SIST EN 61249-3-3:2001?

SIST EN 61249-3-3:2001 focuses on the material build-up and intended application of the film, rather than on general board design. The key point is that the film must be a flexible polyester base with a specified adhesive type and coating arrangement.

Material type

The standard is limited to flexible polyester (PETP) film. That matters because the base film is the structural layer that gives the finished product its handling and flexibility.

Adhesive type

The adhesive may be polyester, acrylic or epoxide type. In practice, this tells the buyer or fabricator which adhesive family is acceptable for the intended process and end use.

One-sided coating

One-sided coated films are intended for coverlay or covercoat. This means they are used as a protective layer over flexible printed wiring, and can also be used to give local support where the circuit needs extra resistance to stress.

Both-sided coating

Both-sided coated films are intended as bonding films. For users, this identifies the material as an interlayer or lamination aid in printed board construction rather than as a surface cover.

Application context

The scope ties the material to flexible printed wiring and printed boards within the wider field of printed boards and other interconnecting structures. That helps engineering and purchasing teams avoid mixing up materials made for rigid boards with materials meant for flexible assemblies.

Function-driven selection

The standard distinguishes products by how they are coated and used. In practice, that is what a buyer needs to state on a specification sheet: coverlay, covercoat, local support or bonding film.

What terms does SIST EN 61249-3-3:2001 define?

• PETP - the standard’s abbreviation for the flexible polyester film used as the base material.
• Coverlay - a one-sided coated film used to cover and protect flexible printed wiring.
• Covercoat - a one-sided coated film used as a protective coating over flexible circuitry.
• Bonding film - a both-sided coated film used to join layers in printed board construction.
• Flexible printed wiring - the flexible interconnection application for which the one-sided coated films are intended.
• Printed boards - the board assemblies in which the both-sided coated films are used as bonding films.
• Adhesive coated flexible polyester film - the product family covered by the standard.

Who uses SIST EN 61249-3-3:2001?

SIST EN 61249-3-3:2001 is used by manufacturers of flexible printed wiring, printed board producers, material suppliers, and purchasing or quality teams that specify flexible interconnect materials. It is also useful to engineers who need to match a film build-up to a coverlay, covercoat or bonding application. In practice, it supports material selection, supplier communication and product qualification in electronics manufacturing.

What changed in SIST EN 61249-3-3:2001 from the previous edition?

SIST EN 61249-3-3:2001 is identified as identical to EN 61249-3-3:1999.

What does the SIST EN 61249-3-3:2001 document contain?

The front matter presents the standard in Slovene, English, German and French and classifies it under ICS 31.180, Printed circuits and boards. The document content centers on the material family, the adhesive types and the two coating configurations, one-sided and both-sided. It is a sectional specification within the series on materials for printed boards and other interconnecting structures, so it is used as a technical basis for specifying flexible film materials in design, procurement and quality control.

SLOVENSKI STANDARD
01-marec-2001
Materials for printed boards and other interconnecting structures - Part 3-3:
Sectional specification set for unreinforced base materials, clad and unclad
(intended for flexible printed boards) - Adhesive coated flexible polyester film
Materials for printed boards and other interconnecting structures -- Part 3-3: Sectional
specification set for unreinforced base materials, clad and unclad (intended for flexible
printed boards) - Adhesive coated flexible polyester film
Materialien für Leiterplatten und andere Verbindungsstrukturen -- Teil 3-3:
Rahmenspezifikation für unverstärkte, kaschierte und unkaschierte Basismaterialien (für
flexible Leiterplatten) - Kleberbeschichtete flexible Polyesterfolien
Matériaux pour circuits imprimés et autres structures d'interconnexion -- Partie 3-3:
Collection de spécifications intermédiaires pour les matériaux de base non renforcés,
recouverts ou non (prévus pour les circuits imprimés flexibles) - Film flexible de polyester
à revêtement adhésif
Ta slovenski standard je istoveten z: EN 61249-3-3:1999
ICS:
31.180 7LVNDQDYH]MD7,9LQWLVNDQH Printed circuits and boards
SORãþH
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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