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STMicroelectronics Z0103NA 2AL2
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- Part No.:
- Z0103NA 2AL2
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
Z0103NA 2AL2.pdf
- Description:
- TRIAC SENS GATE 800V 1A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,678
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Product details
Overview
Z0103NA from STMicroelectronics is a 1 A, 800 V RMS-rated sensitive-gate triac in TO-92 package, designed for AC phase-control switching in low-power home appliance loads. It features 3 mA maximum gate trigger current (Q1), 1.6 V max on-state voltage at 25 °C, and 100 V/µs dV/dt immunity - enabling direct drive from 3.3 V microcontrollers in electrovalve and small lamp control circuits.
For engineers reviewing the Z0103NA datasheet, Z0103NA pinout, Z0103NA application, or Z0103NA equivalent, this part supports reliable zero-crossing–compatible AC switching with verified thermal derating up to 125 °C junction temperature and validated I²t fusing margin of 0.35 A²s under 10 ms surge conditions.
Technical Context
This triac operates in all four quadrants with symmetrical triggering characteristics, supporting bidirectional AC conduction without external polarity management. Its gate sensitivity (IGT ≤ 3 mA) and low latching current (IL ≤ 7 mA) allow robust turn-on even with weak MCU GPIO drive and high-impedance gate resistors.
The device uses planar passivated silicon structure with optimized gate geometry to achieve stable dV/dt immunity (≥100 V/µs at Tj = 110 °C) and critical rate of decrease of main current (dI/dt)c ≥ 5 V/µs - ensuring noise-immune commutation in noisy appliance environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 1 A - continuous AC load current rating at TO-92 lead temperature ≤ 50 °C |
| VDRM / VRRM | 800 V - peak repetitive off-state voltage blocking capability in both directions |
| IGT (Q1) | ≤ 3 mA - maximum gate current required to trigger in Quadrant I, enabling direct 3.3 V MCU drive |
| dV/dt (min) | 100 V/µs - minimum rate of voltage rise before false triggering, measured gate-open at 110 °C |
| VT (max) | 1.60 V - maximum on-state voltage drop at 1.4 A, defining conduction loss and self-heating |
| I²t (fusing) | 0.35 A²s - single-pulse surge energy limit before metallization failure (tp = 10 ms) |
| Rth(j-l) | 60 °C/W - junction-to-lead thermal resistance, governing steady-state temperature rise in TO-92 |
Pinout & Package
TO-92 (straight leads) package with standard three-terminal configuration: A1 (MT1), A2 (MT2), and G (Gate). Leads are unbent in ammopack delivery per ordering code 2AL2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | AC load return path; referenced to A2 for gate trigger polarity definition |
| A2 (MT2) | Main Terminal 2 | AC line input terminal; defines quadrant behavior relative to A1 and G |
| G | Gate | Control input for bidirectional triggering; requires ≤ 3 mA pulse to initiate conduction |
Key Features
| Feature | Design Value |
|---|---|
| Sensitive gate | IGT ≤ 3 mA enables direct drive from 3.3 V microcontroller GPIO without buffer transistor |
| High dV/dt immunity | 100 V/µs minimum ensures noise-free operation in EMI-prone motor and solenoid circuits |
| Low on-state loss | 1.6 V VT max at 1.4 A reduces power dissipation and eliminates need for heatsink below 0.5 W load |
| Robust surge rating | 8.5 A non-repetitive surge (60 Hz, 16.7 ms) supports inrush current of pumps and transformers |
| Wide temp range | -40 to +125 °C operating junction temperature supports sealed appliance enclosures |
Applications
| Electrovalve Control | Fan Speed Regulation |
|---|---|
Use Scenario: On/off sequencing of water/gas solenoid valves in washing machines and dishwashers. IC Role / Device Role / Timing Role: Bidirectional AC switch controlling 230 V AC solenoid coil with zero-voltage turn-off to minimize contact arcing. Use Value: 3 mA gate sensitivity allows direct MCU control; 800 V VDRM withstands line transients during valve de-energization. | Use Scenario: Phase-angle dimming of universal motor fans in HVAC and kitchen appliances. IC Role / Device Role / Timing Role: Main AC power switch synchronized to zero-crossing detection for smooth speed ramping. Use Value: 100 V/µs dV/dt immunity prevents false triggering from motor back-EMF spikes during commutation. |
| Small Lamp Dimming | Door Lock Actuation |
Use Scenario: Dimmable incandescent/halogen lighting in smart ovens and microwaves. IC Role / Device Role / Timing Role: AC mains switch modulated via phase-cutting to adjust brightness without flicker. Use Value: 1.6 V VT max limits conduction loss to < 1.6 W at full load, avoiding thermal shutdown in confined spaces. | Use Scenario: Momentary 230 V AC power delivery to electromagnetic door locks in security systems. IC Role / Device Role / Timing Role: High-reliability AC switch triggered by short gate pulse for secure lock/unlock cycles. Use Value: 0.35 A²s I²t rating accommodates 10 ms lock-coil inrush surges while maintaining long-term reliability. |
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 |
|---|---|---|---|
| Z0103MA | Same 1 A / 600 V rating and 3 mA IGT, but lower peak blocking voltage | Suitable only for 120 V AC or well-filtered 230 V systems with low transient risk | Select when cost optimization is prioritized and line voltage stability is guaranteed |
| BT134-600D | 1 A / 600 V triac with 5 mA IGT and higher Rth(j-l) = 75 °C/W in TO-92 | Requires gate buffer or higher drive voltage; less thermally efficient in sustained duty | Choose only if legacy design compatibility mandates Philips/NXP footprint |
Compared with Z0103MA and BT134-600D, Z0103NA offers superior transient resilience (800 V vs. 600 V), lower gate drive burden (3 mA vs. 5 mA), and better thermal performance (60 °C/W vs. 75 °C/W), making it optimal for new 230 V appliance designs requiring robustness and MCU integration.
Availability
Z0103NA is available at Aetrix Electronics and suitable for home appliance control, electrovalve actuation, and fan speed regulation requiring stable component supply across production lifecycles.
Supply support for Z0103NA 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, analog, MEMS, and microcontroller technologies for industrial and consumer markets.
Z01 series triacs belong to ST's general-purpose AC power switching product line, engineered specifically for cost-sensitive, space-constrained home appliance applications demanding high gate sensitivity and thermal reliability in TO-92 and SOT-223 packages.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The Z0103NA has an operating junction temperature range of –40 °C to +125 °C. For continuous 1 A RMS conduction in TO-92 package, thermal design must ensure lead temperature stays ≤ 50 °C to maintain rated current - corresponding to a maximum ambient temperature of ~40 °C with natural convection and no heatsink.
Can Z0103NA be driven directly from a 3.3 V microcontroller GPIO?
Yes - its guaranteed IGT ≤ 3 mA in Quadrant I allows direct drive using a 3.3 V MCU output with a 1 kΩ series gate resistor, delivering ~3.3 mA peak current. This eliminates need for discrete buffer transistors in most low-duty-cycle appliance control applications.
How does the 800 V VDRM rating impact system-level surge protection?
The 800 V repetitive peak off-state voltage provides 3× margin over 230 V AC mains (325 V peak), allowing the device to survive common-mode surges up to 600 V without false triggering or avalanche breakdown - reducing need for external MOVs in Class II appliance designs.
Is Z0103NA compliant with RoHS and halogen-free requirements?
Yes - Z0103NA is manufactured in ST's ECOPACK2-compliant TO-92 package with lead-free plating and halogen-free molding compound, meeting RoHS Directive 2011/65/EU and JEDEC JS709B standards for green electronics manufacturing.
Z0103NA 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):
- 3 mA
- Current - Hold (Ih) (Max):
- 7 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
Z0103NA 2AL2 FAQ
1.How can I place an order for Z0103NA 2AL2 through Aetrix?
Please submit a Request for Quotation (RFQ) for Z0103NA 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 Z0103NA 2AL2 reliable?
The price and inventory of Z0103NA 2AL2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z0103NA 2AL2 is usually 5 days.
3.What payment methods are accepted for Z0103NA 2AL2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z0103NA 2AL2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for Z0103NA 2AL2?
Z0103NA 2AL2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your Z0103NA 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 Z0103NA 2AL2?
For technical support, including Z0103NA 2AL2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z0103NA 2AL2 requirements.
6.How does Aetrix verify that Z0103NA 2AL2 is sourced from the original manufacturer or authorized distributors?
All Z0103NA 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 Z0103NA 2AL2 meets industry standards.
7.What is the process for return or replacement of Z0103NA 2AL2?
All Z0103NA 2AL2 units undergo pre-shipment inspection (PSI). If there is an issue with Z0103NA 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 Z0103NA 2AL2 part is unused and in its original packaging.
Return procedure for Z0103NA 2AL2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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