Z0405MF 1AA2 STMicroelectronics Triac A (Transistor Outline, Vertical) In Stock
Z0405MF 1AA2 is a 600 V, 4 A TRIAC from STMicroelectronics with a 1.3 V gate trigger voltage and 5 mA gate trigger current in a 3-pin TO-202 vertical transistor outline package. It provides bidirectional AC power switching for light dimmers, motor speed controllers, and appliance load control. Available from stock with worldwide fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- Z0405MF 1AA2 Datasheet PDF
- Category
- Triac A
- Price
- From $0.3680(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of Z0405MF 1AA2?
- 600 V blocking voltage and 4 A RMS on-state current rating enabling direct AC mains load switching at 120 V and 230 V
- Low 1.3 V gate trigger voltage and 5 mA gate trigger current allowing direct drive from low-voltage microcontroller I/O pins via optocoupler
- 3-pin TO-202 vertical through-hole package with bolt-down tab for easy heatsink mounting in high-current AC switching applications
What is Z0405MF 1AA2 used for?
Z0405MF 1AA2 is designed for AC mains load switching in household appliance controls, lamp dimmers, and electric motor speed regulators operating from 120 V or 230 V supply lines. Its low 5 mA gate trigger current makes it compatible with microcontroller-driven optocoupler circuits such as the MOC3020 series, enabling isolated zero-crossing or phase-angle control without a high-power gate driver. The TO-202 package allows the TRIAC to be mounted directly to a chassis or clip heatsink for continuous 4 A RMS load switching in fan controllers and heating element regulators.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the Z0405MF 1AA2 datasheet?
Z0405MF 1AA2 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for Z0405MF 1AA2?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What blocking voltage and on-state current does Z0405MF 1AA2 support for AC mains switching?
Z0405MF 1AA2 is rated for 600 V repetitive peak off-state voltage and 4 A RMS on-state current. The 600 V blocking voltage provides a 2.6x safety margin above the 230 V AC mains peak of approximately 325 V, while the 4 A current rating supports loads up to 920 W at 230 V without additional current derating in typical room-temperature appliance environments.
Can Z0405MF 1AA2 be driven directly from a microcontroller GPIO, and what interface circuit is needed?
Z0405MF 1AA2 requires only 1.3 V gate trigger voltage and 5 mA gate trigger current, which is too low to safely drive directly from a 3.3 V MCU GPIO connected to a live AC line. An optocoupler such as the MOC3020 or MOC3041 should be used for galvanic isolation, providing the 5 mA gate pulse to the TRIAC while keeping the microcontroller below 50 V isolation barrier requirements.
For a 230 V lamp dimmer design, how should Z0405MF 1AA2 be thermally managed in the TO-202 package?
The TO-202 3-pin vertical package has a mounting hole tab that attaches to an aluminum heatsink or chassis. At 4 A RMS continuous current with a typical 1.5 V on-state voltage, the TRIAC dissipates approximately 6 W, requiring a heatsink with thermal resistance below 15°C/W to keep junction temperature under 125°C at 40°C ambient. A small clip-on aluminum extrusion heatsink rated at 10°C/W to 12°C/W is typically sufficient for 4 A dimmer designs.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.4100 | $4.10 |
| 50+ | $0.3890 | $19.45 |
| 100+ | $0.3680 | $36.80 |
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