AVS10CB

Overview

The AVS10CB is an automatic mains voltage selector component manufactured by STMicroelectronics, designed for use in switch-mode power supplies with a capacity of less than 300 W. It functions as a bidirectional triac to automatically select between 110 V and 220 V AC inputs at 50/60 Hz frequencies. The device features an integrated voltage regulator and provides triggering pulse trains for the main switching triac. It operates within a temperature range of 0 °C to +70 °C and utilizes a TO-220 through-hole package. Key electrical ratings include a maximum repetitive peak off-state voltage (V DRM) of ±600 V and an RMS on-state current (I T(RMS)) of 9 A.

Feature Summary

• Automatic compatibility with 110 V and 220 V AC mains inputs without manual intervention
• Integrated voltage regulator and parasitic filter for stable operation
• Generates triggering pulse trains to control the main power triac efficiently

Applications

• Automatic mains selectors for switch-mode power supplies under 300 W
• Universal input power adapters requiring 50/60 Hz full compatibility
• Low power consumption electronic devices needing safe switching

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet to ensure correct insulation requirements. Confirm that the application power rating remains below the 300 W limit specified for this model. Check RoHS compliance status and manufacturing date codes during acquisition to guarantee component authenticity and supply chain integrity.

Selection Notes

Select the AVS10CB when designing universal input SMPS units rated below 300 W. Ensure the circuit design accommodates the ±600 V blocking voltage and 9 A RMS current capabilities. Consider the uninsulated TO-220 package constraints regarding thermal management and safety isolation distances in the final enclosure layout.

Part Context

This component belongs to the AVS10 series of automatic voltage switches from STMicroelectronics. It serves as a specialized controller for managing dual-voltage AC inputs in consumer and industrial power supplies. The CB suffix denotes the specific uninsulated TO-220 package variant within this product family.

Replacement Considerations

The AVS10CBI is the insulated package alternative offering 2500 V RMS isolation. For higher power applications up to 500 W, the AVS12CB series provides increased current handling capability.