APT1221AX

Overview

The Panasonic Electric Works APT1221AX is a single-channel optoisolator featuring a Triac output. It provides 5000Vrms isolation voltage and supports a maximum forward current of 50 mA with a typical forward voltage of 1.21 V. The device handles 100 mA RMS on-state current and blocks up to 600 V in the off state. Key timing parameters include a maximum turn-on time of 100 µs and a minimum static dV/dt of 500 V/µs. It operates within a temperature range of -40°C to 100°C.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Features random-phase triggering for AC load control applications
• Designed for surface mount installation in compact form factors

Applications

• Industrial control systems requiring high voltage isolation
• Solid state relay driver circuits
• AC power switching interfaces

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to ensure correct package type and pin configuration. Confirm that the component meets RoHS3 compliance requirements for the intended market. Cross-reference the supplier datasheet to validate the exact operating temperature range and isolation voltage ratings prior to integration into the final design.

Selection Notes

Select this component when random-phase triac triggering is required rather than zero-cross functionality. Ensure the circuit design accommodates the specified 100 µs maximum turn-on time for precise timing control. Verify that the 5000Vrms isolation rating meets the safety standards of the application environment.

Part Context

This part belongs to the APT series of phototriac couplers from Panasonic Electric Works. It serves as a solid-state interface for controlling AC loads while maintaining galvanic isolation. The device replaces traditional mechanical relays in applications demanding faster switching speeds and longer operational lifespans.

Replacement Considerations

APT1221AX is listed as an alternative to the APT1221A model.