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STMicroelectronics Z0109NA 2AL2
- Part No.:
- Z0109NA 2AL2
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
Z0109NA 2AL2.pdf
- Description:
- TRIAC SENS GATE 800V 1A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,977
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Product details
Overview
Z0109NA 2AL2 from STMicroelectronics is a 1 A, 800 V sensitive-gate triac in TO-92 straight-lead package, designed for AC phase-control switching in low-power home appliance loads. It delivers 10 mA maximum gate trigger current (IGT), 1.6 V max on-state voltage (VT) at 25 °C, and supports dV/dt immunity up to 100 V/µs - enabling direct microcontroller drive in electrovalve, pump, and small lamp control circuits.
For engineers reviewing the Z0109NA 2AL2 datasheet, Z0109NA 2AL2 pinout, Z0109NA 2AL2 application, or Z0109NA 2AL2 equivalent, key selection criteria include gate sensitivity (10 mA IGT), 800 V blocking capability, thermal resistance (Rth(j-l) = 60 °C/W), and TO-92 lead-form compatibility with through-hole PCB assembly and legacy appliance control boards.
Technical Context
This triac operates in all four quadrants with symmetrical triggering characteristics, supporting bidirectional AC conduction without external polarity management. Its 10 mA IGT (Q1–Q4) and 1.3 V max VGT ensure reliable turn-on under low-drive conditions typical of 3.3 V/5 V GPIO outputs.
Thermal design relies on junction-to-lead resistance (60 °C/W) and 125 °C max operating junction temperature, requiring minimal heatsinking for ≤1 A RMS loads in free-air convection. The device's 100 V/µs dV/dt rating and 0.5 V/µs critical dV/dt (dV/dt)c prevent false triggering in noisy mains environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 1 A RMS on-state current - supports continuous 120 VAC/60 Hz loads up to ~120 W with adequate PCB copper cooling |
| VDRM/VRRM | 800 V repetitive peak off-state voltage - provides 2× safety margin over 230 VAC mains (325 V peak) |
| IGT (Q1) | 10 mA max gate trigger current - compatible with standard MCU GPIO without external driver transistors |
| dV/dt (min) | 100 V/µs - suppresses false triggering from fast transient noise on 50/60 Hz AC lines |
| Rth(j-l) | 60 °C/W junction-to-lead - enables thermal design using PCB trace as primary heat path in TO-92 mounting |
| VT (max) | 1.60 V at 25 °C - limits conduction loss to ≤1.6 W at 1 A, reducing self-heating in compact enclosures |
| IL (max) | 25 mA latching current - ensures stable turn-on even with short-duration gate pulses from microcontrollers |
Pinout & Package
TO-92 straight-lead package (plastic, UL94 V0 epoxy, lead-free plating). Dimensions: A = 1.35 mm, B = 4.70 mm, E = 12.70 mm, lead pitch = 2.54 mm. Designed for axial through-hole mounting with un-bent leads in ammopack delivery (2AL2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main terminal 1 (MT1) | Reference electrode for gate triggering; connected to neutral or low-side AC return path |
| A2 | Main terminal 2 (MT2) | High-side AC load connection; carries full load current and withstands 800 V reverse blocking |
| G | Gate | Sensitive control input; triggers conduction in all quadrants with ≤10 mA pulse at ≥1.3 V |
Key Features
| Feature | Design Value |
|---|---|
| Quadrant IV trigger capability | Enables zero-crossing-compatible dimming and phase-angle control without external polarity circuitry |
| 10 mA IGT sensitivity | Eliminates need for discrete gate driver stages when interfacing with 3.3 V or 5 V MCUs |
| 60 °C/W Rth(j-l) | Permits thermal management via PCB copper land instead of external heatsink in space-constrained appliances |
| 100 V/µs dV/dt immunity | Reduces risk of spurious turn-on during motor startup surges or relay contact bounce in shared AC lines |
| ECOPACK® compliance | Meets RoHS and halogen-free requirements for global home appliance market access |
Applications
| Electrovalve Control | Pump Motor Switching |
|---|---|
Use Scenario: On/off sequencing of solenoid valves in washing machines and dishwashers using 230 VAC supply. IC Role / Device Role / Timing Role: Main AC power switch triggered by MCU PWM output synchronized to zero-crossing detection. Use Value: 10 mA IGT allows direct GPIO drive; 800 V rating accommodates inductive kickback from valve coils without snubber. |
Use Scenario: Speed-controlled AC induction pump in HVAC condensate removal or coffee machine water circulation. IC Role / Device Role / Timing Role: Phase-angle controlled triac delivering variable RMS voltage to pump winding. Use Value: 100 V/µs dV/dt immunity prevents misfiring during pump commutation noise; TO-92 fits compact control board layouts. |
| Small Lamp Dimming | Door Lock Actuation |
Use Scenario: Adjustable brightness control for incandescent or halogen lamps in smart home lighting modules. IC Role / Device Role / Timing Role: Leading-edge phase-cut dimmer switch driven by MCU-generated gate pulse timing. Use Value: Low 10 mA IGT ensures precise dimming resolution down to 1% power; 1.6 V VT minimizes conduction loss at low brightness. |
Use Scenario: Secure locking/unlocking of electronic door locks powered from 230 VAC mains with battery backup. IC Role / Device Role / Timing Role: High-reliability AC power switch enabling 500 ms lock engagement pulses. Use Value: 25 mA IL guarantees robust latching during brief MCU wake-up events; TO-92 mechanical stability supports repeated actuation cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Z0109MA 2AL2 | 600 V VDRM instead of 800 V; identical IGT (10 mA), package, and thermal specs | Suitable only for 120 VAC systems or 230 VAC with derated surge margin | Select when cost optimization is prioritized and 600 V blocking suffices for target mains voltage |
| BT134-800D | Same 800 V rating but higher 35 mA IGT; TO-92 package; lower dV/dt (50 V/µs) | Requires external gate resistor or driver for reliable MCU interface; less noise-immune in shared AC wiring | Choose only if legacy BT134 footprint compatibility is mandatory and gate drive strength permits |
Compared with Z0109MA 2AL2, Z0109NA 2AL2 offers superior mains surge resilience; versus BT134-800D, it delivers lower gate drive burden and higher noise immunity - making it optimal for new MCU-based appliance designs targeting 230 VAC markets.
Availability
Z0109NA 2AL2 is available at Aetrix Electronics and suitable for home appliance control, electrovalve actuation, and fan speed regulation requiring stable component supply across high-volume production cycles.
Supply support for Z0109NA 2AL2 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, specializing in power management, analog, and microcontroller solutions for industrial and consumer markets.
Z01 series triacs are engineered for cost-sensitive, high-reliability AC switching in white goods and building automation - emphasizing gate sensitivity, thermal robustness, and regulatory compliance in compact packages.
FAQ
What is the maximum junction temperature for continuous operation?
The Z0109NA 2AL2 has a specified operating junction temperature range of –40 °C to +125 °C. Continuous operation at 125 °C requires thermal design ensuring junction-to-lead temperature rise stays within Rth(j-l) × IT² × Rd limits - typically achievable with ≥2 cm² copper pour under the TO-92 lead.
Can this triac be used with 3.3 V microcontrollers without a gate driver?
Yes. With a maximum gate trigger current of 10 mA and gate trigger voltage of 1.3 V, the Z0109NA 2AL2 can be directly driven by most 3.3 V GPIO pins using a 220 Ω series resistor - verified per Figure 6 in DS2116 showing IGT remains ≤10 mA across –40 °C to 125 °C junction temperatures.
Is the TO-92 package supplied with pre-bent leads in 2AL2 packaging?
No. Per DS2116 Table 9, the 2AL2 packing mode specifies "TO-92 ammopack" with straight leads - meaning leads are unbent and aligned axially for manual or auto-insertion into through-hole PCBs without pre-forming.
How does the 100 V/µs dV/dt rating impact reliability in motor-driven appliances?
This rating ensures immunity to voltage transients generated during brush-commutator arcing or inductive load switching. In fan or pump applications, it prevents false triggering during startup surges - eliminating need for external RC snubbers in designs where layout minimizes trace inductance.
Z0109NA 2AL2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 800 V
- Current - On State (It (RMS)) (Max):
- 1 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 8A, 8.5A
- 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-92-3
Z0109NA 2AL2 FAQ
1.How can I place an order for Z0109NA 2AL2 through Aetrix?
Please submit a Request for Quotation (RFQ) for Z0109NA 2AL2 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 Z0109NA 2AL2 reliable?
The price and inventory of Z0109NA 2AL2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z0109NA 2AL2 is usually 5 days.
3.What payment methods are accepted for Z0109NA 2AL2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z0109NA 2AL2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for Z0109NA 2AL2?
Z0109NA 2AL2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your Z0109NA 2AL2 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 Z0109NA 2AL2?
For technical support, including Z0109NA 2AL2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z0109NA 2AL2 requirements.
6.How does Aetrix verify that Z0109NA 2AL2 is sourced from the original manufacturer or authorized distributors?
All Z0109NA 2AL2 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 Z0109NA 2AL2 meets industry standards.
7.What is the process for return or replacement of Z0109NA 2AL2?
All Z0109NA 2AL2 units undergo pre-shipment inspection (PSI). If there is an issue with Z0109NA 2AL2, 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 Z0109NA 2AL2 part is unused and in its original packaging.
Return procedure for Z0109NA 2AL2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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