X0202MN 5BA4 STMicroelectronics SCR (SOT223 (3-Pin)) In Stock
X0202MN 5BA4 is a silicon-controlled rectifier (SCR) thyristor rated at 800 mA RMS current and 600 V repetitive peak off-state voltage. Packaged in a compact SOT-223 3-pin case, it delivers reliable switching for AC power control applications. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- X0202MN 5BA4 Datasheet PDF
- Category
- SCR
- Price
- From $0.0943(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 800 mA RMS on-state current rating with 600 V repetitive peak off-state voltage for robust AC switching
- Compact SOT-223 3-pin package enables efficient PCB integration with easy heatsinking via the large tab
- Low gate trigger current for direct microcontroller or optocoupler interfacing in lighting and motor control designs
Applications
The X0202MN 5BA4 is suitable for AC power switching and phase-control applications such as lamp dimmers, small motor speed controllers, and solid-state relay circuits operating at mains voltages up to 600 V. Its SOT-223 footprint makes it an excellent choice for space-constrained PCB designs in home appliances, HVAC controls, and industrial lighting equipment. The device's low trigger sensitivity allows direct gate drive from low-power microcontroller outputs or optocoupler drivers operating at 3.3 V or 5 V logic levels.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for X0202MN 5BA4:
suggested
Frequently Asked Questions
What are the maximum voltage and current ratings of the X0202MN 5BA4 thyristor?
The X0202MN 5BA4 is rated for 600 V repetitive peak off-state voltage (VDRM) and 800 mA RMS on-state current. These ratings make it suitable for mains-connected AC switching circuits operating at 110 V or 230 V supply voltages in low-power lighting and control applications.
Which PCB package does the X0202MN 5BA4 use, and how does it compare to a TO-92 package for thermal performance?
The X0202MN 5BA4 uses a SOT-223 package, which provides a large metal tab for improved thermal dissipation compared to the standard TO-92 3-pin through-hole package. The SOT-223 tab can be soldered to a copper pour or heatsink plane on the PCB, improving thermal resistance and allowing sustained operation at the full 800 mA current rating.
Can the X0202MN 5BA4 be triggered directly from a 3.3 V microcontroller GPIO pin?
Yes, the X0202MN 5BA4 has a low gate trigger current requirement, typically around 5 mA to 10 mA at gate voltages below 1.5 V, making it compatible with 3.3 V or 5 V microcontroller outputs through a simple series resistor. An optocoupler is recommended for mains-isolated designs to protect the MCU from 600 V line transients.
What types of applications are best served by the X0202MN 5BA4 SCR?
The X0202MN 5BA4 is ideal for AC phase-control circuits such as lamp dimmers operating at 230 V, 50 Hz mains, as well as small motor speed control and solid-state relay designs. Its 800 mA current rating covers loads up to approximately 180 W at 230 V, making it well-suited for small appliance control, heater regulation, and fan speed adjustment circuits.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1060 | $0.11 |
| 4000+ | $0.0969 | $387.40 |
| 8000+ | $0.0955 | $764.32 |
| 16000+ | $0.0943 | $1508.32 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”