FKN08PN40S

Triacs Overview

The FKN08PN40S is a silicon bidirectional thyristor (TRIAC) manufactured by Fairchild Semiconductor. It features a logic-sensitive gate design and is housed in a TO-92-3 through-hole package. The device supports a maximum voltage rating of 400 V and a gate trigger current of 5 mA, enabling efficient control in AC switching applications.

Triacs Feature Summary

• Logic-sensitive gate architecture for direct microprocessor interface
• Bidirectional thyristor construction for AC load control
• Through-hole TO-92-3 packaging for standard board mounting

Triacs Applications

• Light dimmer circuits
• Motor speed controllers
• Solid-state relay inputs

Triacs Procurement Notes

Verify the specific manufacturer source carefully as this component has been discontinued by Fairchild Semiconductor. Confirm that any available units are genuine original components rather than generic equivalents. Check datasheet revisions to ensure compatibility with existing circuit designs before finalizing procurement decisions.

Triacs Selection Notes

Select this part when a low-cost, through-hole TRIAC with logic-level gate sensitivity is required for AC power control. Ensure the application voltage does not exceed 400 V. Consider surface-mount alternatives if PCB space constraints prevent the use of the TO-92-3 package.

Triacs Part Context

This component belongs to the Fairchild Semiconductor TRIAC family, specifically designed for general-purpose AC switching. It serves as a bidirectional thyristor suitable for controlling resistive and inductive loads in consumer electronics and industrial control systems requiring simple gate triggering.

Triacs Replacement Considerations

• FKN08PN60S

Triacs FAQ

What is the gate trigger current specification?

The gate trigger current is specified at 5 mA.

Is this component suitable for high-frequency switching?

The datasheet does not provide specific high-frequency switching parameters; it is primarily rated for line-frequency AC control applications.