Z0103NA 2AL2 STMicroelectronics Triac A (Other) In Stock
The Z0103NA 2AL2 is a 1 A, 600 V standard TRIAC from STMicroelectronics in a compact SOT-223 package, providing bidirectional AC switching for light dimming, motor speed control, and solid-state relay applications. It features quadrant triggering capability and a gate trigger current of typically 5 mA for reliable operation from logic-level control circuits.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- Z0103NA 2AL2 Datasheet PDF
- Category
- Triac A
- Price
- From $0.0705(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of Z0103NA 2AL2?
- 1 A RMS on-state current rating for small AC load switching up to 600 V
- 600 V repetitive peak off-state voltage for standard 100 V to 240 V AC mains applications
- Quadrant I, II, III, and IV gate triggering for flexible control circuit interfacing
- 5 mA typical gate trigger current compatible with optocoupler and logic-level drive
- SOT-223 surface-mount package enables compact PCB integration with good thermal dissipation
What is Z0103NA 2AL2 used for?
The Z0103NA 2AL2 is used in home appliance control circuits, lamp dimmers, and small AC motor speed regulators where a compact surface-mount TRIAC must switch 100 V to 240 V mains loads up to 1 A. Its low gate trigger current of 5 mA makes it easy to drive directly from an optocoupler output such as a MOC3021 series device, enabling galvanic isolation between the low-voltage control side and the AC power side. It is also applied in solid-state relay modules, HVAC fan controllers, and programmable load switches in building automation equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the Z0103NA 2AL2 datasheet?
Z0103NA 2AL2 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for Z0103NA 2AL2?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum RMS load current and off-state voltage rating of the Z0103NA 2AL2 for AC mains switching?
The Z0103NA 2AL2 is rated for 1 A RMS on-state current and a repetitive peak off-state voltage of 600 V. These ratings cover standard 100 V to 240 V single-phase mains applications where resistive or lightly inductive loads such as incandescent lamps, small fans, or heating elements draw up to 1 A continuously without exceeding the device's thermal limits in a proper PCB heatsink layout.
How can the Z0103NA 2AL2 be triggered from a microcontroller or optocoupler without exceeding gate drive limits?
The Z0103NA 2AL2 requires a typical gate trigger current of 5 mA and a gate trigger voltage of around 1.3 V, which is well within the output capability of standard phototransistor optocouplers such as the MOC3021. A microcontroller can switch the optocoupler LED with a 5 V GPIO through a 270 Ω series resistor to deliver the required gate current while maintaining full galvanic isolation between the 3.3 V or 5 V logic circuit and the 240 V AC power circuit.
For a lamp-dimmer design, what advantages does the SOT-223 package of Z0103NA 2AL2 offer over a through-hole TO-92 TRIAC?
The SOT-223 package provides a larger exposed copper pad on the back than a TO-92 can, allowing better thermal conduction to the PCB copper pour without a separate heatsink clip. At 1 A continuous current with a typical on-state voltage drop of around 1.2 V, the device dissipates approximately 1.2 W, which a standard 2 cm² copper pour can handle at ambient temperatures up to 40°C. The surface-mount format also simplifies automated PCB assembly and eliminates lead-forming steps required for through-hole devices.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.4100 | $4.10 |
| 100+ | $0.2500 | $25.00 |
| 500+ | $0.1700 | $85.00 |
| 2000+ | $0.0730 | $146.00 |
| 40000+ | $0.0708 | $2832.40 |
| 80000+ | $0.0704 | $5636.00 |
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