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STMicroelectronics STF7NM80
- Part No.:
- STF7NM80
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
STF7NM80.pdf
- Description:
- MOSFET N-CH 800V 6.5A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:524
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Product details
Overview
STF7NM80 from STMicroelectronics is an N-channel 800 V, 0.95 Ω typ., 6.5 A Power MOSFET in DPAK (TO-252) package, leveraging MDmesh™ technology for ultra-low RDS(on), high dv/dt immunity, and 100% tested avalanche ruggedness. It serves as a high-voltage switching device in offline SMPS, PFC stages, and industrial motor drives requiring robust unclamped inductive switching.
For engineers reviewing the STF7NM80 datasheet, STF7NM80 pinout, STF7NM80 application, or STF7NM80 equivalent, key selection criteria include verified 800 V VDS, 1.05 Ω max RDS(on) at 10 V VGS, 240 mJ single-pulse avalanche energy, 18 nC total gate charge, and DPAK thermal resistance of 1.4 °C/W junction-to-case.
Technical Context
This device implements ST's MDmesh™ multi-drain process with PowerMESH™ horizontal layout to minimize conduction and switching losses simultaneously. Its low Ciss (620 pF), Coss (460 pF), and Crss (15 pF) enable fast, efficient hard-switching up to 400 V bus voltages.
The integrated body diode features 1.3 V forward voltage at 6.5 A and 460–680 ns reverse recovery time with 4–6 µC Qrr, supporting critical inductive load commutation in flyback and resonant topologies without external snubbing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 800 V - supports primary-side switching in universal-input AC-DC converters up to 380 V DC bus |
| RDS(on) max | 1.05 Ω @ VGS = 10 V, ID = 3.25 A - enables <1.5 W conduction loss at 3.25 A continuous current |
| ID cont @ TC = 25 °C | 6.5 A - delivers full rated current with heatsink mounting on FR-4 PCB |
| EAS | 240 mJ - withstands repetitive unclamped inductive switching events without failure |
| Qg | 18 nC - determines gate drive power requirement and switching speed in 100–500 kHz designs |
| RthJC | 1.4 °C/W - allows 64 °C temperature rise per watt dissipated when mounted to copper plane |
| VGS(th) | 3–5 V - ensures reliable turn-on with standard 5 V or 10 V gate drivers |
Pinout & Package
STF7NM80 is housed in a DPAK (TO-252) surface-mount package with exposed drain tab for thermal and electrical connection. The package complies with ECOPACK® environmental standards and mounts directly to PCB copper for low-impedance heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | High-impedance control input; requires ≤7 Ω gate resistance to limit ringing and ensure stable 10 V turn-on |
| 2 (D / TAB) | Drain / Exposed Pad | Main high-voltage output node; electrically and thermally connected to large copper pour for EMI suppression and thermal relief |
| 3 (S) | Source | Power return path and reference for gate drive; connects to ground or low-side switch node |
Key Features
| Feature | Design Value |
|---|---|
| 100% avalanche tested | Guarantees single-pulse ruggedness to 240 mJ at 50 V, eliminating need for overvoltage derating in flyback snubberless designs |
| Low input capacitance | Ciss = 620 pF minimizes Miller effect and enables clean gate drive waveforms at >200 kHz |
| Low gate charge | Qg = 18 nC reduces driver IC power consumption and simplifies gate driver selection (e.g., 1 A peak drivers suffice) |
| MDmesh™ architecture | Delivers 20% lower RDS(on) × area vs. conventional planar MOSFETs, enabling smaller heatsinks in space-constrained adapters |
Applications
| AC-DC Adapter Primary Switch | Industrial PFC Boost Stage |
|---|---|
Use Scenario: 65 W universal-input offline adapter with quasi-resonant flyback topology operating at 65–130 kHz. IC Role / Device Role: Main high-voltage switching transistor handling 800 V blocking and 3.25 A peak drain current. Use Value: Avalanche rating eliminates need for RCD clamp; 1.05 Ω RDS(on) keeps conduction loss below 1.2 W at full load. | Use Scenario: 1 kW two-stage industrial power supply with active boost PFC front-end. IC Role / Device Role: High-efficiency, high-reliability switching element in continuous conduction mode (CCM) boost converter. Use Value: Low Qg and Coss reduce switching losses by ~18% vs. legacy 800 V MOSFETs at 100 kHz. |
| Motor Drive Inverter Leg | LED Driver High-Voltage Buck |
Use Scenario: 3-phase 400 V AC industrial motor drive using discrete IGBT/MOSFET half-bridge modules. IC Role / Device Role: Low-side switching device in auxiliary control or braking circuit with unclamped inductive loads. Use Value: 26 A pulsed ID capability and 1.4 °C/W RthJC support short-duration regenerative braking pulses without thermal runaway. | Use Scenario: Constant-current LED driver for street lighting with 300–400 V DC input from rectified AC line. IC Role / Device Role: High-side buck switch regulating current through 50–100 V LED strings. Use Value: 800 V VDS provides 2× safety margin against line surges; 1.3 V body diode VSD minimizes freewheeling loss during off-time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP7NM80 | Same die, TO-220 package; RthJC = 1.0 °C/W, higher thermal mass, through-hole mounting | Better suited for prototyping, lab testing, or low-volume open-frame supplies where heatsinking is direct and mechanical stability is required | Select when board-level thermal design permits through-hole mounting and higher junction-to-case thermal performance is prioritized over footprint size |
| FQP8N80C | 800 V, 1.2 Ω max RDS(on), 8 A rating; higher Qg (32 nC), no avalanche rating specified | Lacks guaranteed avalanche ruggedness; requires external clamping in inductive switching; higher gate drive loss | Choose only for cost-sensitive, non-critical applications where surge immunity is managed externally and switching frequency is <60 kHz |
Compared with STP7NM80 and FQP8N80C, STF7NM80 offers optimal balance of surface-mount compatibility, verified avalanche robustness, and low gate charge-making it preferred for production-grade, space-constrained, high-reliability offline power converters.
Availability
STF7NM80 is available at Aetrix Electronics and suitable for AC-DC adapters, industrial PFC modules, motor drive auxiliary circuits, and high-voltage LED drivers requiring stable component supply across long-lifecycle programs.
Supply support for STF7NM80 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
STF7NM80 belongs to the MDmesh™ II family of high-voltage Power MOSFETs engineered specifically for high-efficiency, high-reliability offline power conversion-targeting applications where avalanche capability, low switching loss, and compact packaging are critical.
FAQ
What is the maximum safe operating voltage for STF7NM80 in continuous DC blocking?
The absolute maximum drain-source voltage (VDS) is 800 V, and this rating is fully guaranteed across temperature and lifetime. For reliable long-term operation, ST recommends limiting steady-state VDS to ≤720 V to maintain margin against transients and ensure >10-year field reliability in industrial environments.
Does STF7NM80 require a gate resistor, and what value is recommended?
Yes-a gate resistor is mandatory to dampen parasitic oscillation and control dV/dt. ST's evaluation data specifies 4.7 Ω for resistive-load switching tests at 400 V. For production designs, 5–10 Ω is typical; values below 3 Ω risk overshoot and shoot-through, while above 22 Ω significantly increases switching loss.
Can STF7NM80 replace STD7NM80 in existing PCB layouts?
Yes-STF7NM80 shares identical DPAK (TO-252) package dimensions, pinout (G-D-S), and thermal footprint with STD7NM80. Both use the same MDmesh™ die and have matching RDS(on), Qg, and avalanche specs; no layout or firmware changes are needed for drop-in replacement.
Is the body diode suitable for synchronous rectification in flyback converters?
No-the body diode has relatively high VSD (1.3 V) and slow reverse recovery (460–680 ns, 4–6 µC Qrr). It is intended for freewheeling only. For synchronous rectification, a dedicated low-VF, fast-recovery Schottky or GaN FET must be used in parallel or as a replacement.
STF7NM80 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- MDmesh™
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 800 V
- Current - Continuous Drain (Id) @ 25°C:
- 6.5A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 1.05Ohm @ 3.25A, 10V
- Vgs(th) (Max) @ Id:
- 5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 18 nC @ 10 V
- Vgs (Max):
- ±30V
- Input Capacitance (Ciss) (Max) @ Vds:
- 620 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 25W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FP
STF7NM80 FAQ
1.How can I place an order for STF7NM80 through Aetrix?
Please submit a Request for Quotation (RFQ) for STF7NM80 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STF7NM80 reliable?
The price and inventory of STF7NM80 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STF7NM80 is usually 5 days.
3.What payment methods are accepted for STF7NM80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STF7NM80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STF7NM80?
STF7NM80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STF7NM80 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STF7NM80?
For technical support, including STF7NM80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STF7NM80 requirements.
6.How does Aetrix verify that STF7NM80 is sourced from the original manufacturer or authorized distributors?
All STF7NM80 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STF7NM80 meets industry standards.
7.What is the process for return or replacement of STF7NM80?
All STF7NM80 units undergo pre-shipment inspection (PSI). If there is an issue with STF7NM80, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STF7NM80 part is unused and in its original packaging.
Return procedure for STF7NM80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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