Z0409DF 1AA2

Overview

The Z0409DF 1AA2 is a Triac manufactured by STMicroelectronics, designed for AC switching applications. It features a rated average on-state current of 4A and supports a repetitive peak off-state voltage of 600V. The device utilizes a TO-202 through-hole package with three pins. Key electrical parameters include a maximum holding current of 10mA, a peak on-state voltage of 2V, and a surge current rating of 21A. It operates within a junction temperature range of -40°C to +125°C.

Feature Summary

• Four-quadrant gate triggering capability for reliable control across all AC line phases.
• High surge current handling capacity suitable for inductive load switching.
• Robust thermal performance allowing operation at elevated junction temperatures up to 125°C.

Applications

• Solid-state relays
• Motor speed control circuits
• Lighting dimmer switches

Procurement Notes

Verify the specific suffix '1AA2' against official STMicroelectronics documentation to confirm pinout orientation and marking codes. Ensure the procurement channel provides genuine components with traceable manufacturing dates to avoid counterfeit devices. Cross-reference the part number with authorized distributors to confirm current production status and availability.

Selection Notes

Select this component when a 4A RMS current rating and 600V blocking voltage are required for AC power control. The TO-202 package is appropriate for applications requiring robust mechanical mounting and adequate heat dissipation without active cooling. Verify that the gate trigger current requirements of the driving circuit align with the device's specified IGT limits.

Part Context

This Triac belongs to the Z04 series from STMicroelectronics, which offers various voltage ratings and packaging options. The Z0409 variant specifically denotes the 600V blocking voltage class within this family. The Z04 series is widely used in general-purpose AC switching applications due to its balance of current handling and cost-effectiveness.

Replacement Considerations

Direct replacements may include other 4A, 600V Triacs in TO-202 packages from manufacturers such as Littelfuse or Toshiba. Ensure compatibility regarding gate trigger characteristics and thermal resistance before substitution.

FAQ

What is the maximum repetitive peak off-state voltage for the Z0409DF 1AA2?

The maximum repetitive peak off-state voltage (VDRM/VRRM) is 600V.

Does the Z0409DF 1AA2 support four-quadrant triggering?

Yes, it is a four-quadrant Triac, meaning it can be triggered by both positive and negative gate currents relative to the main terminal 1 voltage.

What is the package type for this component?

The component is housed in a TO-202 (TO-92 equivalent) through-hole package.