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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics Z0109MA 1AA2

Name: Z0109MA 1AA2
Brand: STMicroelectronics
SKU: Z0109MA 1AA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: Z0109MA 1AA2

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: Z0109MA 1AA2.pdf

Description:: TRIAC SENS GATE 600V 1A TO92-3

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Product details

Overview

Z0109MA 1AA2 from STMicroelectronics is a 1 A, 600 V RMS-rated sensitive-gate triac in TO-92 package, designed for AC phase-control switching in low-power home appliance loads. It features 10 mA maximum gate trigger current (IGT), 1.6 V max on-state voltage at 25 °C, and supports direct microcontroller drive without external amplification. Used in electrovalve actuation, small lamp dimming, and fan speed control circuits.

For engineers reviewing the Z0109MA 1AA2 datasheet, Z0109MA 1AA2 pinout, Z0109MA 1AA2 application, or Z0109MA 1AA2 equivalent, this page delivers verified electrical specs, thermal derating curves, gate sensitivity grading, TO-92 terminal mapping, and validated alternatives for AC load switching designs requiring <1 A RMS current and 600 V blocking capability.

Technical Context

This triac operates in all four quadrants with symmetrical triggering behavior, enabling bidirectional conduction in AC mains circuits. Its 10 mA IGT (Q1–Q4) ensures reliable turn-on under worst-case junction temperatures up to 125 °C and gate drive voltages as low as 12 V through 30 Ω series resistance.

Thermal design relies on R_th(j-l) = 60 °C/W (junction-to-lead), limiting continuous RMS current to 1 A only when lead temperature is held ≤50 °C. Critical dV/dt immunity exceeds 50 V/µs at 110 °C junction temperature with gate open, preventing false triggering in noisy AC environments.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	1 A - Maximum continuous sinusoidal load current at TL = 50 °C (TO-92)
VDRM / VRRM	600 V - Peak repetitive off-state voltage rating; defines maximum AC line voltage compatibility (e.g., 230 VAC RMS + margin)
IGT (Q1–Q4)	10 mA max - Gate current required to trigger conduction; enables direct MCU GPIO drive with minimal external components
dV/dt (min)	50 V/µs - Minimum rate of rise of off-state voltage before false turn-on; critical for EMI resilience in motor control
VTM (max)	1.60 V - On-state voltage drop at 1.4 A pulse; determines conduction loss and self-heating at full load
IL (max)	25 mA - Latching current threshold; defines minimum load current needed to sustain conduction after gate removal
IH (max)	25 mA - Holding current limit; sets lowest stable load current before unintended commutation

Pinout & Package

Package: TO-92 (straight leads), plastic body, lead-free plating, UL94 V0 epoxy. Thermal resistance R_th(j-l) = 60 °C/W; maximum junction temperature = +125 °C.

Pin/Terminal	Circuit Role	Design Meaning
A1	Main Terminal 1	Reference electrode for gate trigger; connected to neutral or low-side AC return path
A2	Main Terminal 2	High-side AC load connection; carries full RMS current and withstands 600 V peak reverse voltage
G	Gate	Control input; triggers bidirectional conduction when pulsed with ≥10 mA (Q1/Q3) or ≥10 mA (Q2/Q4)

Key Features

Feature	Design Value
Sensitive gate triggering	10 mA max IGT across all quadrants enables direct drive from 3.3 V/5 V MCUs without buffer transistors
High dV/dt immunity	50 V/µs minimum at 110 °C prevents spurious turn-on during AC zero-crossing noise or inductive kickback
Low on-state loss	1.6 V max VTM and 400 mΩ dynamic resistance minimize power dissipation in 1 A switching applications
Robust thermal performance	R_th(j-l) = 60 °C/W allows 1 A RMS operation with simple PCB copper pour and no heatsink at TL ≤ 50 °C

Applications

Electrovalve Control

Fan Speed Regulation

Use Scenario: On/off control of 230 VAC solenoid valves in washing machines and dishwashers.

IC Role / Device Role / Timing Role: Bidirectional AC switch triggered at zero-crossing to minimize EMI and inrush current.

Use Value: 10 mA IGT ensures reliable activation from MCU GPIO; 600 V VDRM accommodates 230 VAC + safety margin.

Use Scenario: Phase-angle dimming of universal motors in ceiling fans and exhaust units.

IC Role / Device Role / Timing Role: Main AC power switch synchronized to zero-crossing for adjustable conduction angle.

Use Value: 50 V/µs dV/dt immunity prevents misfiring during motor commutation spikes; TO-92 fits compact fan PCB layouts.

Small Lamp Dimming

Door Lock Actuation

Use Scenario: Dimmable incandescent/halogen lighting in smart home panels.

IC Role / Device Role / Timing Role: AC mains switch modulated via phase-cut waveform generated by MCU timer.

Use Value: 1 A IT(RMS) supports up to 230 W resistive load; 1.6 V VTM limits conduction loss to <1.6 W at full load.

Use Scenario: Momentary 230 VAC power delivery to electromagnetic door locks in access control systems.

IC Role / Device Role / Timing Role: High-reliability AC switch activated by short gate pulse from security controller.

Use Value: 25 mA IL ensures lock coil remains energized after gate signal ends; TO-92 mechanical robustness suits industrial mounting.

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	Same 600 V VDRM, but 5 mA IGT (more sensitive); TO-92 package; higher dV/dt (100 V/µs)	Better suited for ultra-low-power gate drive; requires tighter layout to avoid false triggering from higher dV/dt	Select when driving from weak GPIO or battery-powered controllers; verify PCB creepage for 100 V/µs rating
Z0107MA 1AA2	Identical TO-92 package and 600 V rating, but 5 mA IGT (lower sensitivity); same thermal specs	Lower gate drive requirement reduces MCU current burden but may need stronger pull-up if interfacing with optocouplers	Choose for legacy designs using Z0107; not drop-in due to IGT mismatch-gate resistor must be recalculated

Compared with BT134-600E and Z0107MA 1AA2, Z0109MA 1AA2 offers balanced gate sensitivity (10 mA) ideal for standard 5 V MCU outputs, while maintaining sufficient dV/dt margin (50 V/µs) for noisy appliance environments without demanding layout constraints.

Availability

Z0109MA 1AA2 is available at Aetrix Electronics and suitable for home appliance control, fan speed regulation, and electrovalve actuation requiring stable component supply across high-volume production cycles.

Supply support for Z0109MA 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.

Z01 series triacs are part of ST's general-purpose power switching portfolio, engineered specifically for cost-sensitive, low-RMS-current AC load control in white goods and building automation systems.

FAQ

What is the maximum ambient temperature for continuous 1 A operation in TO-92 package?

At free-air convection (no heatsink), Z0109MA 1AA2 supports 1 A RMS only up to 25 °C ambient, per Figure 3. With 5 cm² copper pour, derating begins above 25 °C; at 50 °C ambient, max RMS current drops to ~0.6 A. Lead temperature must remain ≤50 °C for full 1 A rating.

Can Z0109MA 1AA2 replace Z0103MA 1AA2 in an existing design?

No-Z0103MA requires only 3 mA IGT versus 10 mA for Z0109MA. Substituting increases gate drive burden and may cause unreliable triggering if the original circuit uses marginal gate current. Recalculate gate resistor value and verify MCU output capability before replacement.

Is snubber circuitry required for inductive loads like pumps?

Yes-inductive loads generate voltage spikes exceeding 600 V during turn-off. A standard RC snubber (e.g., 100 Ω + 100 nF) across A1–A2 is recommended to suppress dV/dt transients and prevent false triggering, especially at elevated junction temperatures.

Does Z0109MA 1AA2 support logic-level gate drive from 3.3 V microcontrollers?

Not directly-its VGT is rated up to 1.3 V, but IGT = 10 mA requires ≥12 V gate drive into 30 Ω (per datasheet test condition). Use a 3.3 V MCU with a discrete NPN transistor or optocoupler driver stage to deliver the required 10 mA gate pulse reliably.

Z0109MA 1AA2 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Active

Triac Type:: Logic - Sensitive Gate

Voltage - Off State:: 600 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

Z0109MA 1AA2 FAQ

1.How can I place an order for Z0109MA 1AA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for Z0109MA 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 Z0109MA 1AA2 reliable?

The price and inventory of Z0109MA 1AA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z0109MA 1AA2 is usually 5 days.

3.What payment methods are accepted for Z0109MA 1AA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z0109MA 1AA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for Z0109MA 1AA2?

Z0109MA 1AA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your Z0109MA 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 Z0109MA 1AA2?

For technical support, including Z0109MA 1AA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z0109MA 1AA2 requirements.

6.How does Aetrix verify that Z0109MA 1AA2 is sourced from the original manufacturer or authorized distributors?

All Z0109MA 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 Z0109MA 1AA2 meets industry standards.

7.What is the process for return or replacement of Z0109MA 1AA2?

All Z0109MA 1AA2 units undergo pre-shipment inspection (PSI). If there is an issue with Z0109MA 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 Z0109MA 1AA2 part is unused and in its original packaging.

Return procedure for Z0109MA 1AA2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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