USB-C cables — particularly high-power cables for USB PD charging — may require BIS CRS registration depending on their construction and power rating.

When USB-C Cables Need BIS Certification

• Active USB-C cables (with embedded chips for USB 3.2/4/Thunderbolt): Active cables contain electronics and require IS/IEC 62368-1:2023 evaluation
• USB-C cables sold as part of a certified product: Covered under the system certification — no separate certification typically needed
• Passive USB-C cables sold standalone: May or may not require independent certification — confirm with your BIS-recognized lab based on power rating and construction

Safety Considerations for High-Power USB-C Cables

• 100W (20V/5A) and 240W (48V/5A) cables: E-Marker chip required for cables above 60W. E-Marker verifies cable is rated for the power requested by PD negotiation.
• Conductor cross-section: Must be adequate for maximum rated current without overheating
• Connector contact resistance: High contact resistance at USB-C connectors causes localized heating — connector quality is critical
• Insulation integrity: Insulation must withstand USB PD voltages safely

House of Testing advises on whether your USB-C cable products require independent BIS CRS certification.