STP31N65M5 STMicroelectronics MOSFET (N-Channel) (Transistor Outline, Vertical) In Stock
STMicroelectronics STP31N65M5 is an N-channel power MOSFET in TO-220 package, rated 22 A and 650 V with 150 W maximum power dissipation. It leverages STripFET M5 technology for reduced switching losses and improved efficiency. Available from stock worldwide with competitive pricing.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STP31N65M5 Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $1.4630(MOQ 4)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 650 V breakdown with 22 A continuous rating for PFC and flyback converter designs powered from universal AC mains
- STripFET M5 trench technology minimizes gate charge and switching losses at 100 kHz switching frequencies
- 150 W power dissipation in TO-220 package with direct heatsink mounting for high-efficiency industrial power stages
Applications
The STP31N65M5 is optimized for power factor correction boost stages, LLC resonant converters, and primary-side flyback switches in SMPS designs operating from 85 V to 265 V AC mains input. Its 650 V rating covers worst-case rectified bus voltages including transients, while STripFET M5 technology reduces Eoss and Qg for efficiency gains at 65 kHz to 150 kHz switching frequencies. The TO-220 through-hole package enables straightforward heatsink attachment for continuous 22 A operation in open-frame industrial power supplies.
Specifications
| Factory Lead Time | 14Weeks |
| YTEOL | 5 |
| Configuration | SINGLE |
| Drain Current-Max (ID) | 22A |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| Number of Elements | 1 |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 150W |
| Surface Mount | NO |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| 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 STP31N65M5:
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Frequently Asked Questions
Why is a 650 V rating preferred over 600 V for universal AC mains power supplies using the STP31N65M5?
Universal AC input (85 V to 265 V AC) produces a rectified peak bus voltage of approximately 375 V, but mains surges and transients can push the DC bus momentarily above 450 V. The STP31N65M5's 650 V breakdown provides a 200 V safety margin above worst-case transients, reducing stress-related failures compared to 600 V rated devices in the same TO-220 package and current class.
How does STripFET M5 technology in the STP31N65M5 improve converter efficiency?
STripFET M5 uses advanced trench gate geometry to reduce gate charge Qg and output capacitance Coss compared to planar MOSFETs, resulting in lower switching losses at 22 A across 65 kHz to 150 kHz operating frequencies. Reduced Eoss also benefits zero-voltage switching LLC topologies, where output capacitance must be discharged at each transition, improving converter efficiency by 0.5% to 1.5% in typical 500 W designs.
For a 300 W PFC boost converter, can a single STP31N65M5 handle the peak inductor current?
A 300 W PFC stage at 85 V input draws approximately 3.5 A RMS, with peak inductor current reaching 10 A to 12 A. The STP31N65M5's 22 A continuous and higher pulse current capability comfortably handles this with margin, and its 150 W package dissipation allows operation without additional parallel devices even under low-line worst-case input conditions at room temperature.
When would a designer choose STP31N65M5 over a similarly rated SiC MOSFET for cost-sensitive industrial SMPS?
For cost-sensitive industrial power supplies where switching frequency does not exceed 100 kHz to 150 kHz, the STP31N65M5 at its silicon MOSFET price point provides adequate switching performance without the 3x to 5x unit cost premium of equivalent SiC MOSFETs. Applications such as 22 A rated chargers and industrial adapters prioritize BOM cost reduction over the incremental efficiency gains offered by SiC technology above 200 kHz.
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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 |
|---|---|---|
| 4+ | $1.5196 | $6.08 |
| 4000+ | $1.5172 | $6068.64 |
| 8000+ | $1.4896 | $11916.64 |
| 16000+ | $1.4630 | $23407.68 |
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