Cx31993 Datasheet Fix Hot Jun 2026

By updating the datasheet, engineers will be forced to design adequate thermal management solutions (larger copper pours, thermal vias, or active cooling) from the inception of the project, rather than discovering thermal failures during the prototype phase.

If you own an CX31993-based adapter (commonly sold by brands like Avani, Abigail, or JCALLY), you may have touched the body after 20 minutes of use and felt a concerning, near-painful heat. Is this normal? Will it damage your phone or laptop? cx31993 datasheet fix hot

The CX31993 lacks an internal heat pad on its QFN package. Unlike desktop DACs that dissipate heat via the PCB ground plane, the CX31993 relies entirely on the dongle’s epoxy casing. If the manufacturer used a 2-layer PCB (most cheap dongles do), heat has nowhere to go. The chip thermally throttles at ~85°C, but the plastic case will burn your fingers long before that. By updating the datasheet, engineers will be forced