ACS120-7SFP

Overview

The ACS120-7SFP is a single AC line switch from the STMicroelectronics ASD family, packaged in TO-220FPAB. It controls loads up to 2 A RMS with a repetitive peak off-state voltage of +/-700 V and a typical avalanche clamping voltage of 1100 V. Triggered by negative gate current (max 10 mA), it integrates a high-voltage clamp to absorb inductive turn-off energy and a gate level shifter for microcontroller isolation. The device operates within a junction temperature range of -30 °C to +125 °C and withstands non-repetitive line peak pulse voltages up to 2 kV.

Feature Summary

• Integrates a high-voltage clamping structure to absorb inductive turn-off energy without external snubbers
• Includes a gate level shifter driver to isolate digital controllers from main switch noise
• Designed to meet IEC 61000-4-5 surge immunity standards directly

Applications

• AC static switching in appliance control systems
• Driving low power high inductive or resistive loads such as solenoids, valves, relays, and dispensers
• Control of pumps, fans, micro-motors, and defrost heaters

Procurement Notes

Verify the specific package variant during procurement, as the 'SFP' suffix denotes the TO-220FPAB form factor. Confirm that the ordering information matches the required tube quantity of 50 units per base. Ensure the component marking reads 'ACS1207S' to validate authenticity against the official datasheet specifications.

Selection Notes

Select this component when an integrated solution for AC load switching is required without external protection circuits. The TO-220FPAB package offers thermal performance suitable for case temperatures up to 115 °C at full rated current. Consider the negative gate trigger requirement and ensure the driving controller can source sufficient current to activate the switch reliably.

Part Context

This part belongs to the ACS120 AC Switch Family built around the ASD concept. It shares functional similarities with the ACS120-7SB (DPAK) and ACS120-7ST (TO-220AB) variants, differing primarily in physical packaging and thermal resistance characteristics while maintaining identical electrical ratings and functionality.

Replacement Considerations

Direct replacements include other packages within the same series: ACS120-7SB for DPAK and ACS120-7ST for TO-220AB. Verify thermal management requirements when substituting between packages, as junction-to-ambient resistance varies significantly between DPAK and TO-220FPAB configurations.