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STMicroelectronics Z0409MF 1AA2
- Part No.:
- Z0409MF 1AA2
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-202 No Tab
- Datasheet:
-
Z0409MF 1AA2.pdf
- Description:
- TRIAC SENS GATE 600V 4A TO202-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,580
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Product details
Overview
Z0409MF 1AA2 from STMicroelectronics is a 4 A, 600 V RMS TRIAC in TO-202-3 package with 10 mA gate trigger current (IGT), designed for AC mains switching in home appliance control circuits including electrovalves, pumps, door locks, and lamp dimming. It supports direct microcontroller drive and features dV/dt immunity of 100 V/µs at 110 °C junction temperature.
For engineers reviewing the Z0409MF 1AA2 datasheet, Z0409MF 1AA2 pinout, Z0409MF 1AA2 application, or Z0409MF 1AA2 equivalent, key selection criteria include IGT sensitivity (10 mA), VDRM rating (600 V), IT(RMS) derating vs. ambient temperature, thermal resistance (Rth(j-l) = 15 °C/W), and gate-controlled quadrant I/II/III/IV triggering capability.
Technical Context
This TRIAC operates as a bidirectional semiconductor switch enabling phase-angle or zero-crossing AC power control. Its four-quadrant gate triggering (I–IV) allows flexible control under both polarities of main terminal voltage, while the 10 mA IGT enables direct interface with low-drive GPIOs without external amplification.
Thermal design relies on Rth(j-l) = 15 °C/W to the lead and Rth(j-a) = 100 °C/W to ambient, with maximum junction temperature limited to +125 °C. Critical dV/dt immunity (100 V/µs min.) and dI/dt rating (20 A/µs) ensure reliable commutation in inductive loads like motors and solenoids.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 4 A - Maximum continuous RMS load current at 25 °C ambient with adequate heatsinking |
| VDRM / VRRM | 600 V - Peak repetitive off-state voltage blocking capability in both directions |
| IGT (Q1) | 10 mA - Gate trigger current required in Quadrant I, enabling direct MCU GPIO drive |
| dV/dt (min) | 100 V/µs - Minimum rate of rise of off-state voltage before false turn-on occurs at Tj = 110 °C |
| Rth(j-l) | 15 °C/W - Junction-to-lead thermal resistance, defining heat transfer path to PCB copper or heatsink |
| VTM (max) | 2.0 V - Maximum on-state voltage drop at 5.5 A, determining conduction loss and self-heating |
| IL (max) | 15 mA - Maximum latching current, specifying minimum load current needed to sustain conduction after gate pulse |
Pinout & Package
TO-202-3 package with isolated tab (A2 connected to case). Leads are arranged linearly: Pin 1 = MT1 (A1), Pin 2 = Gate (G), Pin 3 = MT2 (A2). The metal tab is electrically connected to A2 and serves as primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate trigger polarity; current flows between A1 and A2 when triggered |
| G | Gate | Controls conduction onset in all four quadrants; requires ≥10 mA pulse for reliable turn-on |
| A2 (MT2) | Main Terminal 2 | Connected to metal tab; defines voltage polarity reference for gate triggering and thermal interface |
Key Features
| Feature | Design Value |
|---|---|
| Four-quadrant triggering | Enables gate control with either polarity of A2 relative to A1, supporting universal AC phase control |
| 10 mA IGT sensitivity | Allows direct drive from 3.3 V or 5 V microcontroller outputs without buffer transistors |
| 100 V/µs dV/dt immunity | Prevents false triggering in noisy environments with fast-rising line transients (e.g., motor commutation) |
| ECOPACK® lead-free packaging | Complies with RoHS and JEDEC JESD97; second-level interconnect fully lead-free |
| Rth(j-l) = 15 °C/W | Supports compact thermal design using PCB copper pour or small clip-on heatsinks |
Applications
| Home Appliance Motor Control | Small Lamp Dimming |
|---|---|
Use Scenario: Controlling speed of AC induction fan motors in HVAC units and kitchen exhaust hoods. IC Role / Device Role / Timing Role: Bidirectional AC switch regulating power via phase-cutting; gate triggered synchronously with zero-crossing detection. Use Value: Enables smooth, silent speed adjustment with 10 mA gate drive compatibility and 100 V/µs noise immunity against motor back-EMF spikes. | Use Scenario: Dimming incandescent and halogen lamps in residential lighting systems. IC Role / Device Role / Timing Role: Main power switch implementing leading-edge phase-control dimming driven by microcontroller PWM+zero-crossing logic. Use Value: Delivers flicker-free dimming down to 5% brightness with stable latching (IL ≤ 15 mA) and low conduction loss (VTM ≤ 2.0 V). |
| Electrovalve Actuation | Door Lock Solenoid Control |
Use Scenario: On/off switching of 230 V AC water/gas electrovalves in washing machines and dishwashers. IC Role / Device Role / Timing Role: Zero-voltage turn-on switch ensuring EMI reduction and contactless operation without mechanical relay wear. Use Value: Eliminates relay bounce and arcing; 4 A IT(RMS) rating supports 10 W–20 W solenoid loads with 15 °C/W thermal path for sustained duty cycles. | Use Scenario: Secure locking/unlocking of appliance doors using 230 V AC solenoid actuators. IC Role / Device Role / Timing Role: High-reliability AC power switch activated by short gate pulses synchronized to AC half-cycles. Use Value: Guarantees robust turn-on even at cold start (−40 °C) with 10 mA IGT and prevents false triggering during ESD events (dV/dt ≥ 100 V/µs). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TRIAC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BT134-600E | 4 A IT(RMS), 600 V VDRM, but IGT = 5 mA (lower sensitivity); TO-220AB package | Requires less gate drive but needs larger footprint and higher thermal mass for same power dissipation | Select when lower gate drive is prioritized and board space permits TO-220 mounting |
| Z0405MF | Same TO-202-3 package and 600 V rating, but IGT = 5 mA (reduced sensitivity) | Less suitable for marginal MCU drive conditions; better noise margin in high-dV/dt environments | Select when system noise exceeds 100 V/µs or gate drive margin is >5 mA |
Compared with BT134-600E and Z0405MF, Z0409MF 1AA2 offers optimal balance of gate sensitivity (10 mA), compact TO-202-3 footprint, and high dV/dt immunity-making it ideal for space-constrained, microcontroller-driven AC loads where reliable turn-on must coexist with EMI resilience.
Availability
Z0409MF 1AA2 is available at Aetrix Electronics and suitable for home appliance motor control, small lamp dimming, electrovalve actuation, and door lock solenoid control requiring stable component supply across production lifecycles.
Supply support for Z0409MF 1AA2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
Z04 series TRIACs are part of ST's power discrete portfolio, engineered specifically for cost-sensitive, high-volume AC switching in white goods and building automation systems.
FAQ
What is the maximum junction temperature for Z0409MF 1AA2?
The maximum operating junction temperature (Tj) is +125 °C, as specified in Table 1. Exceeding this limit risks thermal runaway and irreversible device failure. Derating curves in Figure 2 show that full 4 A IT(RMS) is only sustainable up to ~50 °C ambient with Rth(j-a) = 100 °C/W; forced cooling or reduced load current is required above that.
Can Z0409MF 1AA2 be used with 3.3 V microcontrollers?
Yes - its 10 mA IGT (Quadrant I) is compatible with typical 3.3 V GPIOs capable of sourcing ≥12 mA (e.g., STM32, ESP32). A series resistor of 220 Ω limits gate current to ~10 mA at 3.3 V, satisfying the trigger requirement while protecting the MCU output stage.
Is the metal tab electrically isolated?
No - the metal tab is internally connected to A2 (MT2) and is not insulated. When mounted to a heatsink, electrical isolation (e.g., mica washer + thermal paste) is mandatory if the heatsink is grounded or referenced to another potential. Failure to isolate may cause short circuits or safety hazards.
Does Z0409MF 1AA2 support snubberless operation?
It supports snubberless operation only in resistive or lightly inductive loads with dV/dt < 100 V/µs. For highly inductive loads (e.g., large motors), a snubber network (RC across A1–A2) is recommended to suppress voltage overshoot exceeding the 600 V VDRM rating and prevent false triggering.
Z0409MF 1AA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-202 No Tab
- Packaging:
- Bag
- Product Status:
- Obsolete
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 4 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 20A, 21A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 10 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-202-3
Z0409MF 1AA2 FAQ
1.How can I place an order for Z0409MF 1AA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for Z0409MF 1AA2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for Z0409MF 1AA2 reliable?
The price and inventory of Z0409MF 1AA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z0409MF 1AA2 is usually 5 days.
3.What payment methods are accepted for Z0409MF 1AA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z0409MF 1AA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for Z0409MF 1AA2?
Z0409MF 1AA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your Z0409MF 1AA2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for Z0409MF 1AA2?
For technical support, including Z0409MF 1AA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z0409MF 1AA2 requirements.
6.How does Aetrix verify that Z0409MF 1AA2 is sourced from the original manufacturer or authorized distributors?
All Z0409MF 1AA2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that Z0409MF 1AA2 meets industry standards.
7.What is the process for return or replacement of Z0409MF 1AA2?
All Z0409MF 1AA2 units undergo pre-shipment inspection (PSI). If there is an issue with Z0409MF 1AA2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The Z0409MF 1AA2 part is unused and in its original packaging.
Return procedure for Z0409MF 1AA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
Z0409MF 1AA2 Tags
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