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Product Detailed Parameters
- Description：TRIAC SENS GATE 400V 4A TO202-3
- Series：-
- Mfr：STMicroelectronics
- Package：Bulk
- Triac Type：Logic - Sensitive Gate
- Voltage - Off State：400 V
- Current - On State (It (RMS)) (Max)：4:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：20A, 21A
- Current - Gate Trigger (Igt) (Max)：3 mA
- Current - Hold (Ih) (Max)：3 mA
- Configuration：Single
- Operating Temperature：-
- Mounting Type：Through Hole
- Package / Case：TO-202 No Tab
- Supplier Device Package：TO-202-3
- Grade：-
- Qualification：-
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Overview
The Z0402DF 1AA2 is a bidirectional triac manufactured by STMicroelectronics, designed for AC power switching applications. It features a non-repetitive peak on-state current of 21 A and a rated repetitive peak off-state voltage (VDRM) of 600 V. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-202 through-hole package. Key electrical parameters include an on-state voltage of 2 V, a holding current maximum of 3 mA, and a gate trigger voltage of 1.3 V with a gate trigger current of 3 mA. The component exhibits a low off-state leakage current of 5 uA at VDRM.
Feature Summary
- Bidirectional conduction capability for AC load control
- High surge current handling capacity for robust operation
- Thermal stability across extended industrial temperature ranges
Applications
- AC motor speed control circuits
- Solid-state relay implementations
- Lighting dimmer modules
Procurement Notes
Verify the specific suffix '1AA2' against official STMicroelectronics documentation to confirm pinout and marking details. Confirm availability status as distribution channels may list this component as discontinued or obsolete. Request the latest datasheet to validate RoHS compliance and environmental declarations before integration into production designs.
Selection Notes
Select this component when a 600 V blocking voltage and 4 A RMS current rating are required in a TO-202 package. Ensure the gate drive circuit can supply at least 3 mA at 1.3 V to guarantee reliable triggering. Consider thermal management requirements given the 125°C maximum junction temperature limit and the specific thermal resistance characteristics of the TO-202 housing.
Part Context
This part belongs to the Z04 series of triacs from STMicroelectronics, which are engineered for general-purpose AC switching. The series offers a balance of high current density and voltage blocking capabilities in standard through-hole packages, suitable for replacing older generation thyristors in legacy AC control designs.
Replacement Considerations
Consult STMicroelectronics replacement guides for direct equivalents within the Z04 family. Verify that any substitute maintains the 600 V VDRM rating and compatible TO-202 footprint. Cross-reference gate trigger specifications to ensure interface compatibility with existing control logic.
