STF38N65M5 STMicroelectronics MOSFET (N-Channel) (Transistor Outline, Vertical) In Stock
STMicroelectronics STF38N65M5 is a high-voltage N-Channel MOSFET rated at 650V and 30A in an isolated RoHS-compliant TO-220FP package. Features ultra-low 95mΩ on-resistance, 660mJ avalanche energy rating, and built-in diode. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STF38N65M5 Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $1.9485(MOQ 1)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 650V drain-source breakdown voltage enabling safe operation in offline AC/DC power supply and PFC designs
- Ultra-low 95mΩ (0.095Ω) RDS(on) delivering superior switching efficiency in high-voltage power conversion stages
- 660mJ avalanche energy rating providing exceptional robustness against inductive switching voltage spikes
- Isolated TO-220FP package with built-in diode simplifying heatsinking and enabling compact half-bridge topologies
Applications
The STF38N65M5 is designed for high-voltage power conversion applications including AC/DC adapters, flyback converters, LLC resonant converters, and power factor correction (PFC) stages operating from the AC mains. Its 650V rating and ultra-low on-resistance make it efficient in switch-mode power supplies for industrial equipment, server power units, and solar inverters. The isolated TO-220FP package with built-in body diode simplifies PCB layout in bridge topology designs.
Specifications
| Factory Lead Time | 14Weeks |
| YTEOL | 5 |
| Additional Feature | ULTRA LOW RESISTANCE |
| Avalanche Energy Rating (Eas) | 660mJ |
| Case Connection | ISOLATED |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 650V |
| Drain Current-Max (ID) | 30A |
| Drain-source On Resistance-Max | 0.095Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JEDEC-95 Code | TO-220AB |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 35W |
| Pulsed Drain Current-Max (IDM) | 120A |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| 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 STF38N65M5:
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Frequently Asked Questions
What are the voltage and current ratings of the STF38N65M5?
The STF38N65M5 is rated for a minimum 650V drain-source breakdown voltage and a maximum continuous drain current of 30A. Its maximum RDS(on) of 95mΩ (0.095Ω) is specified as ultra-low for a 650V class device, reducing conduction losses significantly in high-voltage switch-mode power supply stages.
What is the avalanche energy rating of the STF38N65M5 and why is it significant?
The STF38N65M5 has an avalanche energy rating (Eas) of 660mJ, which is very high for a device in this voltage class. This means it can safely absorb large amounts of energy during unclamped inductive switching events, making it robust against voltage spikes in transformer-based power supplies and motor drive circuits.
What package does the STF38N65M5 use and what is its case connection type?
The STF38N65M5 is housed in a TO-220FP (Flat Package) with 3 pins and an isolated case, meaning the heatsink tab is electrically isolated from all pins. This allows direct mounting to a chassis or heatsink without electrical isolation pads, simplifying thermal design in high-voltage power electronics where the tab would otherwise be at a hazardous potential.
What applications is the STF38N65M5 best suited for?
The STF38N65M5 is ideal for offline AC/DC power supplies, flyback converters, LLC half-bridge resonant converters, totem-pole PFC circuits, and industrial motor drives operating at 400V DC bus. Its combination of 650V breakdown voltage, 660mJ avalanche capability, and ultra-low 95mΩ RDS(on) makes it a strong candidate for high-efficiency power conversion in server PSUs, EV chargers, and industrial inverters.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.4549 | $5.45 |
| 5+ | $2.6947 | $13.47 |
| 20+ | $2.0729 | $41.46 |
| 50+ | $1.9485 | $97.42 |
In Stock · 24h Response · Worldwide Shipping
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