S4012V

Overview

The S4012V is a standard recovery silicon controlled rectifier (SCR) manufactured by Littelfuse Inc. It features a non-sensing gate structure and is rated for a repetitive peak forward blocking voltage of 400 V and an average on-state current of 12 A. The device utilizes a TO-251AA through-hole package, providing robust performance for phase control applications requiring reliable unidirectional switching capabilities.

Feature Summary

• Standard recovery characteristics suitable for general phase control
• Non-sensing gate design simplifies trigger circuit requirements
• Through-hole TO-251AA package facilitates board mounting

Applications

• Heating element control systems
• Motor speed regulation circuits
• General AC phase control applications

Procurement Notes

Verify the specific manufacturer designation, as Littelfuse acquired Hamlin components. Confirm the package type matches the required TO-251AA footprint. Ensure the non-sensing gate variant aligns with the intended trigger circuit design before finalizing procurement orders.

Selection Notes

Select this component for low-power SCR applications requiring 400 V blocking capability and 12 A continuous current handling. The non-sensing gate feature reduces sensitivity to noise, making it suitable for environments where precise gate triggering is managed by dedicated drive circuits rather than passive networks.

Part Context

This part belongs to the Low Power SCR series from Littelfuse, designed for voltages up to 1200 V. It serves as a unidirectional switch within the broader thyristor portfolio, complementing other variants that offer different current ratings or bidirectional configurations for diverse power control needs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing thermal management and gate drive requirements when considering alternative SCRs from the same or different manufacturers.