STF12N50DM2 STMicroelectronics MOSFET (N-Channel) (Transistor Outline, Vertical) In Stock
STF12N50DM2 is an N-channel power MOSFET from STMicroelectronics rated for 500 V drain-to-source voltage and 12 A continuous drain current. It features matte tin terminal finish for enhanced solderability in a TO-220 vertical package. Available from global distributors with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STF12N50DM2 Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $0.8797(MOQ 10)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 500 V drain-to-source breakdown voltage enabling high-voltage power conversion designs
- 12 A continuous drain current rating for medium-power switching and motor drive applications
- Matte tin (Sn) annealed terminal finish for reliable solder joints and RoHS compliance
Applications
STF12N50DM2 is designed for high-voltage switching applications including offline power supplies, LLC resonant converters, and PFC boost stages operating from universal AC mains. Its 500 V rating and 12 A current handling make it suitable for inverter stages in solar microinverters and UPS systems. The TO-220 vertical package provides excellent thermal dissipation when mounted to a heatsink in industrial power designs.
Specifications
| Factory Lead Time | 16Weeks |
| YTEOL | 6 |
| JESD-609 Code | e3 |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STF12N50DM2:
Power Field-Effect Transistor, 10A I(D), 1-Element, N-Channel, Metal-oxide Semiconductor FET
Frequently Asked Questions
What voltage and current ratings define STF12N50DM2's suitability for offline power supply designs?
STF12N50DM2 is rated for 500 V drain-to-source voltage and 12 A continuous drain current, making it well suited for offline flyback and forward converters operating from 85–265 V AC universal input. These ratings provide sufficient margin above peak rectified mains voltage to ensure reliable long-term operation in power supply switching stages.
How does STF12N50DM2 perform in PFC boost converter designs requiring high switching frequency?
With its 500 V blocking capability and 12 A current rating, STF12N50DM2 handles PFC boost converter switching from 85 V to 265 V AC input. The vertical TO-220 package allows heatsinking to manage thermal dissipation at switching frequencies of 50–100 kHz typical for CCM PFC, making it a practical choice for industrial power factor correction stages.
What is the lead time for STF12N50DM2 and what alternatives should designers consider for supply resilience?
STF12N50DM2 carries a factory lead time of 16 weeks from STMicroelectronics, which is relatively long. Designers should qualify alternative 500 V N-channel MOSFETs in TO-220 with 12 A or higher current ratings, and maintain at least 20 weeks of safety stock to avoid production stoppages when ordering volumes fluctuate.
For a motor drive running from a 400 V DC bus, what makes STF12N50DM2 an appropriate switch selection?
A 400 V DC bus requires a switch rated at least 500 V to provide a 25% derating margin against voltage spikes from motor inductance. STF12N50DM2 meets this requirement with its 500 V Vds and 12 A Id, handling motor currents up to approximately 8–10 A continuous after derating for temperature, which fits small to medium 1–3 kW drive topologies.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
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+ | $1.4200 | $14.20 |
| 25+ | $1.3500 | $33.75 |
| 50+ | $1.2400 | $62.00 |
| 100+ | $1.1900 | $119.00 |
| 500+ | $1.0300 | $515.00 |
| 2000+ | $0.8797 | $1759.46 |
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.”