ACS108-8SN-TR

Overview

The ACS108-8SN-TR is an overvoltage protected AC switch built with A.S.D.® technology, designed for controlling loads up to 0.8 A RMS at 800 V blocking voltage. It features an integrated overvoltage crowbar structure to absorb inductive turn-off energy and a gate level shifter driver that isolates the digital controller from the main switch. Triggered by negative gate current, it requires no external snubber or varistor. The device operates within a junction temperature range of -30°C to +125°C and is supplied in SOT-223 tape and reel packaging.

Feature Summary

• Enables equipment compliance with IEC 61000-4-5 surge standards through overvoltage crowbar technology
• Provides high noise immunity against static dV/dt and IEC 61000-4-4 burst events
• Eliminates the need for external protection components such as snubbers or varistors
• Interfaces directly with microcontrollers via a gate level shifter driver

Applications

• Alternating current on/off static switching in appliances and industrial control systems
• Driving low power high inductive or resistive loads including relays, valves, solenoids, and dispensers
• Control of pumps, fans, low power motors, door locks, and air flow dumpers
• Lamp switching applications

Procurement Notes

Verify the specific ordering code ACS108-8SN-TR corresponds to the SOT-223 package configuration. Confirm that the tape and reel packing mode contains 1000 pieces per base quantity. Ensure compatibility with ECOPACK environmental specifications if required by the design constraints.

Selection Notes

Select this component for applications requiring direct microcontroller interface without additional isolation circuitry. The device is suitable for driving small power high inductive loads where snubber circuits are undesirable. Verify that the load current does not exceed the 0.8 A RMS rating under specified thermal conditions.

Part Context

This part belongs to the ACS™/A.S.D® series of AC switches manufactured by STMicroelectronics. It utilizes proprietary technology to integrate overvoltage protection and logic-level gate drive capabilities into a single compact semiconductor device, simplifying system architecture compared to traditional triac solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.