UL 796F is the safety standard specifically for Flexible Printed Wiring Boards (FPC) and Rigid-Flex PCB structures. As of 2026, it remains the industry benchmark for ensuring the safety and reliability of flexible electronics.
1. Scope of Certification
UL 796F covers the materials, construction, and testing of flexible and rigid-flex boards, including:
Base Materials: Polyimide (PI), Polyester (PET), and liquid crystal polymer (LCP).
Adhesives & Stiffeners: Bonding materials and mechanical reinforcements.
Silver Ink/Conductive Pastes: Technologies used in printed electronics.