IPC-6013F for Flex and Rigid-Flex PCBs: What Buyers Should Change Now
Buyers should not simply replace IPC-6013E with IPC-6013F on every open order. Treat Revision F as a controlled specification change: review the licensed standard against the design, performance class, use condition, qualification plan, inspection plan, and contract, then agree in writing when the new revision applies. For a new RFQ, state the intended revision and resolve any conflict among the drawing, purchase order, fabrication notes, and supplier quotation before production release.
Why is IPC-6013F relevant now?
The Global Electronics Association lists IPC-6013F as a published standard titled Qualification and Performance Specification for Flexible/Rigid-Flexible Printed Boards. IPC China announced the new revision on September 17, 2026, and says it replaces IPC-6013E, which was released in September 2021. Its August 2026 standards update records August 25, 2026 as the release date for the English version.
The public announcement describes an 88-page standard covering single-sided, double-sided, and multilayer flexible printed boards as well as multilayer rigid-flex boards. It says covered constructions may include stiffeners, plated through holes, microvias, blind vias, buried vias, and HDI build-up structures.
Official IPC announcement: https://www.ipc.org.cn/about/news/ipc-6013f-standard-release
Official IPC August 2026 standards update: https://www.ipc.org.cn/about/news/ipc-standards-update-august-2026
Global Electronics Association standardization status: https://www.electronics.org/de/Status
What did the public IPC summary identify as changed?
The following points are external facts summarized from IPC's public announcement. They are not a substitute for a licensed copy of the standard or a clause-by-clause technical review.
1. Broader treatment of complex structures. IPC says Revision F adds or updates requirements involving edge plating, back-drilled holes, and printed board cavities.
2. More explicit evaluation of rigid-flex transition areas. The public summary identifies transition zones and strain relief as updated areas.
3. Revised evaluation of hole interconnections and copper integrity. IPC names plated through-hole integrity after thermal stress, copper penetration, hole-wall plating, copper-filled vias, and annular rings among the updated topics.
4. Updated dimensional and quality controls. IPC identifies minimum annular width, inner and outer copper thickness, minimum dielectric spacing, and quality conformance testing among the revised areas.
IPC also says the standard uses Class 1, Class 2, and Class 3 performance levels and distinguishes application conditions such as installation flexing, continuous dynamic flexing, high-temperature use, and UL-related conditions. A buyer should confirm the exact definitions and applicable requirements in the controlled standard rather than infer them from the public summary.
Why a revision change can affect an RFQ
This section is procurement analysis, not a statement of an IPC requirement.
A specification revision can change what the supplier must build, measure, document, or qualify. It can also expose contradictions that were hidden when a drawing referred only to IPC-6013 without a revision, class, use condition, or order of precedence.
That matters especially for rigid-flex designs because the fabrication package may combine rigid materials, flexible materials, coverlay, adhesive systems, stiffeners, plated holes, controlled impedance, laser-drilled features, cavities, edge plating, and mechanical transition areas. A generic instruction such as build to IPC-6013F does not by itself communicate the complete product definition.
The practical goal is not to add more wording to a purchase order. It is to make the buyer's intended acceptance basis unambiguous and technically reviewable before the supplier commits to price and schedule.
A seven-step IPC-6013F adoption workflow
1. Identify the current contractual baseline.
List every controlled document that names IPC-6013, including drawings, fabrication notes, stackups, material specifications, quality clauses, approved-source requirements, inspection plans, and purchase orders. Record the revision named in each document. If a document says latest revision, ask the responsible engineering and quality teams to confirm how that phrase is interpreted contractually.
2. Define the intended product conditions.
Record the required performance class, whether the flex area is bent only during installation or moves repeatedly in service, the expected temperature environment, and any product-specific regulatory or customer conditions. Do not let a supplier infer these items from the application name alone.
3. Run a controlled gap review.
Use licensed copies of Revision E and Revision F to compare the clauses that apply to the actual construction. Map each relevant change to the drawing, process, coupon, test, inspection record, and acceptance document it could affect. The public IPC summary is useful for triage, but it is not detailed enough to approve a design or disposition a nonconformance.
4. Reconcile the product data package.
Confirm that the released package identifies the stackup, rigid and flex materials, copper weights or thicknesses, coverlay and adhesive system, via types, filled-via requirements, controlled-impedance targets, finished dimensions, stiffeners, transition geometry, bend zones, surface finish, panel or array constraints, and any special structures. If edge plating, back-drilling, cavities, or HDI features are present, call them out explicitly rather than relying on the standard number to define the design.
5. Agree the evidence package before quotation.
Ask which qualification records, microsection results, electrical test records, dimensional reports, material traceability records, coupons, certificates, or lot-level inspection results will be supplied. Tie each requested record to a drawing note, purchase requirement, or agreed inspection plan. Avoid requesting every possible document without identifying a decision it supports.
6. Set an effective point for the new revision.
Agree whether Revision F applies to a new part number, a drawing revision, a first article, a qualification lot, or a named production lot. Define how work in progress, existing inventory, replacement orders, and approved deviations will be handled. Do not assume that a revised purchase order alone updates every downstream manufacturing document.
7. Preserve the decision trail.
Keep the approved gap assessment, supplier response, drawing changes, qualification decision, deviations, and effective-lot record together. This gives engineering, quality, and procurement the same answer when a later audit or failure investigation asks which requirements applied.
What should a flex or rigid-flex PCB RFQ state?
The following checklist is buyer guidance, not a quotation from IPC-6013F.
1. Controlled drawing number and revision.
2. Applicable IPC-6013 revision and required performance class.
3. Installation-flex, dynamic-flex, or other declared use condition.
4. Complete rigid-flex stackup and approved material requirements.
5. Copper, dielectric, coverlay, adhesive, and stiffener definitions.
6. Plated through-hole, blind-via, buried-via, microvia, via-fill, and back-drill details where applicable.
7. Rigid-to-flex transition geometry, bend-zone restrictions, and strain-relief requirements defined by the design authority.
8. Controlled-impedance targets, test method, coupon plan, and reporting expectations.
9. Required qualification, first-article, quality-conformance, microsection, electrical, dimensional, and traceability records.
10. Specification order of precedence, deviation process, change-notification requirement, and effective production lot.
Questions to ask a prospective supplier
1. Which IPC-6013 revision did you use for the quotation, and where is that revision recorded?
2. Have you completed a documented gap assessment from Revision E to Revision F for this construction?
3. Which requested features require engineering review or additional qualification under your controlled process?
4. Which product class and flex-use condition did you assume?
5. How will you verify the rigid-to-flex transition area for this design?
6. Which coupons and test records will be linked to the delivered lot?
7. How will material substitutions or process changes be notified and approved?
8. What written evidence will identify the first lot built to the agreed Revision F baseline?
What should buyers avoid assuming?
First, publication of Revision F does not by itself rewrite an existing contract. Applicability depends on the controlled documents and the parties' written agreement.
Second, a general statement of IPC compliance does not prove that the supplier reviewed the buyer's exact class, construction, flex-use condition, acceptance plan, and evidence requirements.
Third, the public IPC announcement does not provide every acceptance limit or test detail. Teams that need to design, manufacture, inspect, or accept to Revision F should work from an authorized controlled copy.
Fourth, a sample product page is not a blanket capability statement. The feasibility of a new rigid-flex build depends on the released data package and an order-specific engineering review.
What JETFGO publicly states
JETFGO's website includes a Flex Rigid Board category with three sample product pages. One public sample identifies a four-layer, 1.0 mm ENIG rigid-flex board with edge plating. Another identifies a six-layer, 1.0 mm ENIG example with one-step HDI, step holes, beveling, and impedance. These are examples published on the website; they do not establish that the same materials, dimensions, tolerances, qualification basis, evidence package, price, or lead time are available for another design.
JETFGO Flex Rigid Board category: https://www.jetfgo.com/en/products/just-soft-combination-board
JETFGO edge-plated flex-rigid sample: https://www.jetfgo.com/en/just-soft-combination-board/just-soft-combination-board-55068
JETFGO HDI rigid-flex sample: https://www.jetfgo.com/en/just-soft-combination-board/just-soft-combination-board-76187
For a new RFQ, send a controlled fabrication package and ask JETFGO to confirm manufacturability, the quoted IPC revision, the applicable qualification and inspection evidence, and any exceptions in writing. JETFGO's public process-capability page and contact form are available here:
https://www.jetfgo.com/en/capability
https://www.jetfgo.com/en/contact
Frequently asked questions
Is IPC-6013F automatically mandatory for every flex PCB order?
No. A published industry standard becomes applicable through the buyer's controlled design documents, purchase requirements, regulatory or customer obligations, or another binding agreement. Confirm the contractual baseline instead of assuming automatic adoption.
Can a supplier certificate alone close the revision review?
Usually not. A certificate can be part of the evidence package, but buyers still need to know what revision, class, construction, lot, tests, and exceptions it covers.
Should an ongoing Revision E program switch immediately?
Not without change control. Engineering, quality, procurement, and the supplier should assess the applicable differences, decide whether requalification or document changes are needed, and record the approved effective point.
What is the highest-value RFQ improvement?
Add a clear specification hierarchy. State which drawing, stackup, purchase clause, and IPC revision govern, then define how conflicts and deviations must be resolved before production.
Buyer takeaway
IPC-6013F gives buyers a timely reason to audit flex and rigid-flex specifications, especially where transition zones, plated interconnections, HDI structures, edge plating, back-drilling, cavities, or tight dimensional controls are involved. The safest adoption path is a documented gap review followed by aligned drawings, RFQs, qualification evidence, inspection plans, and an agreed production cut-in. That process turns a standard revision into a measurable sourcing decision rather than a vague compliance claim.
Source review date: October 15, 2026.
1. IPC China, IPC-6013F Qualification and Performance Specification for Flexible and Rigid-Flex Printed Boards Officially Released, announcement dated September 17, 2026. https://www.ipc.org.cn/about/news/ipc-6013f-standard-release
2. IPC China, IPC Standards Update for August 2026, dated August 27, 2026. The page records IPC-6013F and summarizes the scope and updated technical areas. https://www.ipc.org.cn/about/news/ipc-standards-update-august-2026
3. Global Electronics Association, Status of Standardization. The current published-standards list identifies IPC-6013F as a published qualification and performance specification for flexible and rigid-flex printed boards. https://www.electronics.org/de/Status
4. JETFGO, Flex Rigid Board product category. Used only to verify that JETFGO publicly lists flex-rigid products. https://www.jetfgo.com/en/products/just-soft-combination-board
5. JETFGO, public four-layer flex-rigid sample page. Used only for the example specifications displayed on that page. https://www.jetfgo.com/en/just-soft-combination-board/just-soft-combination-board-55068
6. JETFGO, public six-layer HDI rigid-flex sample page. Used only for the example specifications displayed on that page. https://www.jetfgo.com/en/just-soft-combination-board/just-soft-combination-board-76187
7. JETFGO, Process Capability page and Contact page. Used as proposed internal destinations, not as evidence of order-specific compliance. https://www.jetfgo.com/en/capability https://www.jetfgo.com/en/contact