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STMicroelectronics Z0405ME 1AA2
- Part No.:
- Z0405ME 1AA2
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-202 Long Tab
- Datasheet:
-
Z0405ME 1AA2.pdf
- Description:
- TRIAC SENS GATE 600V 4A TO202
- Quantity:
- Payment:
- Shipping:
Inventory:8,085
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Product details
Overview
Z0405ME 1AA2 from STMicroelectronics is a 4 A, 600 V RMS sensitive-gate triac in TO-202-3 package, rated for 5 mA gate trigger current (IGT) in Quadrants I, II, III, and IV, with 20 A non-repetitive surge rating and 2.2 A²s I²t fusing value - used for AC load switching in microcontroller-driven home appliance controls including electrovalves, pumps, and lamp dimmers.
For engineers reviewing the Z0405ME 1AA2 datasheet, Z0405ME 1AA2 pinout, Z0405ME 1AA2 application, or Z0405ME 1AA2 equivalent, key selection criteria include gate sensitivity (5 mA), blocking voltage (600 V), RMS current rating (4 A), thermal resistance (15 °C/W junction-to-lead), and TO-202-3 mechanical compatibility in space-constrained AC control modules.
Technical Context
This triac operates in all four quadrants with symmetrical triggering behavior, enabling phase-angle and zero-crossing AC switching without external polarity conditioning. Its 5 mA IGT allows direct drive from 3.3 V/5 V GPIO pins with minimal series resistance.
Designed for full-sine-wave conduction, it supports repetitive 4 A RMS at 25 °C ambient (derating to ~2.5 A at 75 °C), with critical dV/dt immunity of 20 V/µs (min) and dI/dt capability of 20 A/µs under specified gate drive conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 4 A - continuous AC load current handling at 25 °C ambient with heatsink; derates per Rth(j-l) = 15 °C/W |
| VDRM / VRRM | 600 V - peak repetitive off-state voltage blocking in both directions; suitable for 230 VAC mains with safety margin |
| IGT (Q1–Q4) | 5 mA max - low gate drive requirement enables direct MCU GPIO control without buffer stage |
| ITSM (t = 20 ms) | 20 A - surge withstand for motor startup or lamp inrush without latch-up or failure |
| I²t (tp = 10 ms) | 2.2 A²s - fusing energy limit defining short-circuit withstand time before destructive failure |
| dV/dt (c) | 0.5 V/µs min - minimum rate of voltage rise that avoids false turn-on with gate open at high temperature |
| Rth(j–l) | 15 °C/W - thermal resistance from junction to lead; determines heatsink sizing for sustained 4 A operation |
Pinout & Package
TO-202-3 package: insulated plastic case with three leads - A1 (MT1), A2 (MT2), and G (Gate) - designed for through-hole mounting and manual soldering; lead-free ECOPACK® compliant per JEDEC JESD97.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate trigger; current flows between A1 and A2 when triggered; bidirectional conduction path |
| A2 (MT2) | Main Terminal 2 | Second main current path terminal; polarity relative to A1 defines triggering quadrant; symmetric with A1 |
| G | Gate | Control input requiring ≥5 mA pulse to initiate conduction; triggers in all four quadrants with VD = 12 V, RL = 30 Ω |
Key Features
| Feature | Design Value |
|---|---|
| Quadrant I–IV operation | Enables universal AC phase control without external polarity inversion circuitry or dedicated driver ICs |
| 5 mA gate trigger sensitivity | Permits direct interface with low-drive microcontrollers (e.g., STM32 GPIO, PIC, AVR) using ≤220 Ω series resistor at 5 V |
| ECOPACK® lead-free construction | Complies with RoHS and JEDEC JESD97 marking standards; second-level interconnect free of lead and halogens |
| 20 A non-repetitive surge rating | Supports reliable switching of inductive loads like small motors and solenoids during transient overcurrent events |
Applications
| Home Appliance Motor Control | Small Lamp Dimming |
|---|---|
Use Scenario: Controlling speed of AC fans or actuation timing of washing machine drain pumps. IC Role / Device Role / Timing Role: Bidirectional AC power switch triggered by microcontroller PWM or zero-crossing logic. Use Value: 5 mA IGT ensures robust triggering across temperature (-40 to +125 °C), eliminating need for gate driver ICs and reducing BOM count. | Use Scenario: Phase-cut dimming of incandescent or halogen lamps in smart lighting modules. IC Role / Device Role / Timing Role: Main AC switching element synchronized to zero-crossing detection for flicker-free dimming. Use Value: 600 V VDRM provides 2.6× margin over 230 VAC peak (325 V), ensuring long-term reliability under line surges. |
| Electrovalve Actuation | Door Lock Control |
Use Scenario: On/off control of water/gas solenoid valves in dishwashers or HVAC systems. IC Role / Device Role / Timing Role: Latching AC switch activated by brief gate pulse; holds conduction until current zero-crossing. Use Value: 2.2 A²s I²t rating tolerates valve coil inrush currents up to 20 A for 10 ms without fuse activation or device failure. | Use Scenario: Secure locking/unlocking of access doors in smart appliances or building entry systems. IC Role / Device Role / Timing Role: Isolated AC power switch driven by isolated MCU output via optocoupler or transformer. Use Value: TO-202-3 package offers creepage/clearance >4 mm between A1–A2 and G, supporting reinforced insulation per IEC 60730. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac-based AC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BT134-600E | 4 A IT(RMS), 600 V VDRM, but 10 mA IGT - requires stronger gate drive than Z0405ME 1AA2 | Less suitable for direct 3.3 V MCU drive; needs buffer or lower-value gate resistor | Select when higher dV/dt immunity (50 V/µs) is prioritized over gate sensitivity |
| MAC4DCM | 4 A IT(RMS), 600 V VDRM, 5 mA IGT, but TO-92 package - lower thermal performance (Rth(j-a) = 125 °C/W) | Limited to low-duty-cycle or low-ambient applications due to poor heat dissipation | Select only for space-constrained PCBs where 4 A RMS is intermittent, not continuous |
Compared with BT134-600E and MAC4DCM, Z0405ME 1AA2 uniquely balances low 5 mA gate drive, TO-202-3 thermal capability (Rth(j-l) = 15 °C/W), and full-quadrant operation - making it optimal for compact, microcontroller-driven AC control where board space, drive simplicity, and thermal headroom are jointly constrained.
Availability
Z0405ME 1AA2 is available at Aetrix Electronics and suitable for home appliance motor control, small lamp dimming, electrovalve actuation, and door lock control requiring stable component supply and long-term industrial availability.
Supply support for Z0405ME 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, designing and manufacturing analog, digital, and mixed-signal ICs, discrete devices, and MEMS sensors for industrial, automotive, and consumer markets.
Z0405ME 1AA2 belongs to the Z04 Standard Triacs product line - engineered specifically for cost-sensitive, high-volume AC switching in white goods and building automation where gate sensitivity, thermal robustness, and regulatory compliance are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The Z0405ME 1AA2 has an operating junction temperature range of –40 °C to +125 °C. Continuous operation at full 4 A RMS requires maintaining Tj ≤ 125 °C via appropriate heatsinking - achievable with Rth(j-l) = 15 °C/W and lead-to-board thermal path design per ST's AN4125 guidelines.
Can this triac be driven directly from a 3.3 V microcontroller GPIO?
Yes - with VD = 3.3 V and RL = 220 Ω, gate current reaches ~10.5 mA, exceeding the 5 mA max IGT requirement. Derating for temperature and process variation is recommended; a 150 Ω resistor ensures margin at 125 °C junction temperature per Figure 4 in the datasheet.
Is zero-crossing switching supported without additional circuitry?
No - Z0405ME 1AA2 is a standard (non-zero-crossing) triac. It conducts immediately upon gate trigger regardless of AC phase. Zero-crossing operation requires external detection (e.g., optocoupler + comparator) and timed gate pulses aligned to voltage zero crossings.
Does this part meet RoHS and REACH requirements?
Yes - Z0405ME 1AA2 is manufactured in ST's ECOPACK®-compliant TO-202-3 package, certified lead-free and halogen-free per EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with full material declarations available upon request.
Z0405ME 1AA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-202 Long Tab
- Packaging:
- Bulk
- 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):
- 5 mA
- Current - Hold (Ih) (Max):
- 5 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-202
Z0405ME 1AA2 FAQ
1.How can I place an order for Z0405ME 1AA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for Z0405ME 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 Z0405ME 1AA2 reliable?
The price and inventory of Z0405ME 1AA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z0405ME 1AA2 is usually 5 days.
3.What payment methods are accepted for Z0405ME 1AA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z0405ME 1AA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for Z0405ME 1AA2?
Z0405ME 1AA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your Z0405ME 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 Z0405ME 1AA2?
For technical support, including Z0405ME 1AA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z0405ME 1AA2 requirements.
6.How does Aetrix verify that Z0405ME 1AA2 is sourced from the original manufacturer or authorized distributors?
All Z0405ME 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 Z0405ME 1AA2 meets industry standards.
7.What is the process for return or replacement of Z0405ME 1AA2?
All Z0405ME 1AA2 units undergo pre-shipment inspection (PSI). If there is an issue with Z0405ME 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 Z0405ME 1AA2 part is unused and in its original packaging.
Return procedure for Z0405ME 1AA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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