STB18NM80 STMicroelectronics MOSFET (N-Channel) (Surface Mount D2PAK (TO-263)) In Stock
STB18NM80 is an N-channel 800 V power MOSFET by STMicroelectronics with 17 A drain current and 295 mΩ maximum on-resistance in a TO-263AB D2PAK surface-mount package. Key specs: 600 mJ avalanche energy rating and built-in body diode for robust high-voltage switching. RoHS compliant, in stock with competitive pricing and worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Surface Mount D2PAK (TO-263)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- STB18NM80 Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $1.8984(MOQ 10)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 800 V minimum drain-source breakdown voltage enabling use in offline and high-voltage AC-DC power conversion applications
- 17 A continuous drain current with 295 mΩ maximum RDS(on) balancing current handling and switching efficiency
- 600 mJ avalanche energy rating (EAS) providing robust protection against inductive voltage spikes and transient overvoltage
- TO-263AB (D2PAK) RoHS-compliant surface-mount package combining high power density with automated SMT assembly compatibility
Applications
The STB18NM80 is designed for high-voltage switching applications including flyback and forward switch-mode power supplies, PFC boost converters, and offline AC-DC converters operating from mains input. Its 800 V rating provides adequate margin for rectified 230 VAC line voltages, making it a reliable choice for industrial power supplies, energy-metering equipment, and lighting drivers. The D2PAK package enables efficient PCB-level heat dissipation through copper plane spreading without the need for through-hole mounting.
Specifications
| Factory Lead Time | 14Weeks |
| YTEOL | 6.7 |
| Avalanche Energy Rating (Eas) | 600mJ |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 800V |
| Drain Current-Max (ID) | 17A |
| Drain-source On Resistance-Max | 0.295Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JEDEC-95 Code | TO-263AB |
| JESD-30 Code | R-PSSO-G2 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 245 |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 190W |
| Pulsed Drain Current-Max (IDM) | 68A |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Surface Mount D2PAK (TO-263) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the voltage and current rating of the STB18NM80?
The STB18NM80 has a minimum drain-source breakdown voltage of 800 V and a maximum continuous drain current of 17 A. These ratings make it suitable for high-voltage power conversion circuits operating from rectified mains voltages, including universal AC input (85–265 VAC) power supply topologies.
What is the RDS(on) of the STB18NM80 and what does it mean for power dissipation?
The STB18NM80 has a maximum RDS(on) of 295 mΩ (0.295 Ω). At full rated current of 17 A, this results in approximately 85 W of conduction loss, so proper thermal management and heatsinking via the TO-263AB package and PCB copper areas are important for maintaining safe junction temperatures.
What is the avalanche energy rating of the STB18NM80?
The STB18NM80 is rated for 600 mJ of avalanche energy (EAS). This substantial rating means the device can safely absorb large inductive energy transients during switch-off events, providing a significant safety margin in applications with transformer leakage inductance or inductive loads such as motors and solenoids.
What package does the STB18NM80 use and is it RoHS compliant?
The STB18NM80 is packaged in a TO-263AB (D2PAK) surface-mount case, which is the JEDEC-95 standard for high-power SMT transistors. This package offers excellent thermal performance through direct PCB contact. The device is RoHS compliant, making it suitable for use in environmentally regulated products across all major markets.
What types of power supply topologies are best suited for the STB18NM80?
The STB18NM80 is well-suited for flyback, forward, and boundary-mode PFC converter topologies where the switch must withstand high-voltage stress from rectified mains and transformer leakage spikes. Its 800 V rating, combined with the 600 mJ avalanche capability, provides a robust design margin for offline power converters operating in industrial, consumer, and lighting segments.
Related Guides
DP83848 10/100 Mbps Ethernet PHY Transceiver: How to Choose the Right Variant
A complete selection guide for the DP83848 family: compare temperature grades, packages, JTAG support, and interface options across all five variants.
Jun 2, 2026
LM5156 Wide-VIN Boost/SEPIC/Flyback Controller: How to Choose the Right Variant
A concise selection guide for the LM5156 and LM51561 family: how to choose between automotive vs industrial grade, spread-spectrum vs fixed-frequency, and WSON-8 vs HTSSOP-14 package.
Jun 2, 2026
24LC01B I2C EEPROM Design Guide: Pinout, Write Timing, and Package Selection
Complete application note for the Microchip 24LC01B 1 Kbit I2C EEPROM: address wiring, pull-up sizing, acknowledge polling, page-write alignment, and package selection.
Jun 1, 2026
AD8531ARTZ-REEL7 Application Note: High-Current Op-Amp Design Guide
A complete design guide for the AD8531ARTZ-REEL7 250 mA rail-to-rail op-amp: decoupling, thermal budgeting, capacitive load stability, and PCB layout best practices.
Jun 1, 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+ | $3.9170 | $39.17 |
| 100+ | $2.8068 | $280.68 |
| 500+ | $2.5401 | $1270.05 |
| 1000+ | $2.1817 | $2181.72 |
| 2000+ | $2.0753 | $4150.50 |
| 4000+ | $1.8984 | $7593.76 |
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.”