UL-certified printed circuit boards for the North American market
UL-certified printed circuit boards for the North American market
UL-certified printed circuit boards for the North American market
Why UL certification is essential for printed circuit boards
UL Solutions (formerly Underwriters Laboratories) is one of the world’s most important institutions for product safety. For more than 100 years, UL has developed safety standards and verified compliance with them—an approach that differs significantly from many European systems, where standardization and testing are institutionally separated.
A key distinction:
UL combines standard development and certification testing within the same ecosystem. As a result, a UL listing is not merely a classification, but a verified proof of compliance. Alternative certification bodies may be involved for component evaluations, but final acceptance for UL-certified end products is handled within the UL framework.
UL certification is a key requirement for many electronic products in the North American market. It confirms that materials and components meet defined safety standards regarding the risks of FIRE and ELECTRIC SHOCK and can be reliably used in the final product.
Without UL-compliant components, the certification process often involves additional effort — both in terms of time and regulatory requirements.
Not every printed circuit board is the same – and neither are the UL requirements. That is exactly where the key advantage lies:
We offer a broad portfolio of UL-listed printed circuit board types, tailored to different technologies and application areas, including:
This broad foundation allows us to provide suitable, already listed solutions for a wide range of applications—without unnecessary special approvals or complex re-certification processes.
What this means for you:
Greater flexibility in specification and increased confidence throughout the certification process.
With UL-compliant printed circuit boards from Würth Elektronik Circuit Board Technology, you already establish a tested foundation for your end product at the component level.
UL compliance is based on carefully selected and validated material systems. What matters is not only the PCB itself, but also the combination of design, materials, and manufacturing processes.
Each UL listing specifies different parameters related to fire behavior (e.g. flammability), electrical safety (insulation, resistance to tracking), and mechanical stability. The end application defines the requirements for the printed circuit board as a UL-listed component.
This creates a reliable foundation for safety-critical electronics — from prototype to volume production.
Not just any UL listing. The right one.
The technical evaluation and definition of requirements are always your responsibility as the developer or manufacturer:
This helps you avoid:
Important:
What matters is not simply whether a printed circuit board is UL-listed, but whether it has the right UL registration for your specific application.
Our support for UL-compliant designs
You have already defined the requirements and want to select the appropriate UL type? Or would you like to ensure that your specification matches available UL listings? Talk to us – we will support you in selecting the right option from our extensive range of UL-listed printed circuit board types.
This turns a regulatory requirement into a clearly manageable development process.
In this webinar, you will gain practical UL fundamentals for printed circuit boards and their specification. Learn more about the different types of UL listings and their benefits, the parameters and processes defined within a UL type, as well as the content, rules, and options of UL marking. We also cover temperature resistance, solder limits, and soldering processes, along with the correct specification of UL requirements. In addition, we highlight the potential consequences of using unsuitable printed circuit boards and provide an overview of the improvements introduced by the new UL listing.
Contact our UL experts
