Features
• Enables equipment to meet IEC 61000-4-5 surge with overvoltage crowbar
technology
• High noise immunity against static dV/dt and IEC 61000-4-4 burst
• Needs no external protection snubber or varistor
• Reduces component count by up to 80% and Interfaces directly with the microcontroller
• Common package tab connection supports connection of several alternating
current switches on the same cooling pad
• VCL gives headroom before clamping then crowbar action

Applications
• Alternating current on/off static switching in appliances and industrial control
systems
• Driving low power high inductive or resistive loads like:
– relay, valve, solenoid, dispenser
– pump, fan, low power motor, door lock, air flow dumper
– lamp

Description
The ACS108-8SA belongs to the AC switch range (built with A. S. D.® technology).
This high performance switch can control a load of up to 0.8 A.
This device switch includes an overvoltage crowbar structure to absorb the inductive
turn-off energy, and a gate level shifter driver to separate the digital controller from
the main switch. It is triggered with a negative gate current flowing out of the gate pin.
Note: ®: A.S.D. is a registered trademark of STMicroelectronics
Note: TM: ACS is a trademark of STMicroelectronics