USB-C Power Delivery (EPR) Sourcing from China
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EPR (Extended Power Range) is the USB Power Delivery 3.1 capability that pushes USB-C past the old 100W ceiling up to 240W (48V at 5A), and it changes what you must verify when sourcing connectors and cables from China. A connector or cable claiming 240W needs the correct e-marker, conductor gauge, and contact rating — many cheap USB-C cables are still 60W-rated internally and will quietly cap or overheat at higher loads. Gold plating thickness and PCB retention are the specs buyers most often find downgraded versus the datasheet.
EPR refers to the USB PD 3.1 power tier above 100W, up to 240W. The sourcing pitfall is treating all USB-C as interchangeable; an EPR-rated cable must carry a compliant e-marker chip and adequate conductors, so you test sample units at full rated voltage and current rather than trusting the listing.
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FAQ
What power can USB-C EPR deliver?
USB PD 3.1 EPR extends USB-C up to 240W (48V at 5A), beyond the previous 100W limit. The cable must be EPR-rated with the correct e-marker, and both ends must negotiate the higher voltage, or it falls back to 100W.
How do I verify a USB-C cable actually supports 240W?
Check for a compliant e-marker, measure conductor gauge, and bench-test at the full 48V/5A. We also verify gold-plating thickness on contacts and PCB retention force, since those are the specs most often cut to hit a price.
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