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STMicroelectronics STL4LN80K5
- Part No.:
- STL4LN80K5
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
STL4LN80K5.pdf
- Description:
- MOSFET N-CH 800V 3A PWRFLAT VHV
- Quantity:
- Payment:
- Shipping:
Inventory:4,475
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Product details
Overview
STL4LN80K5 from STMicroelectronics is an N-channel 800 V, 2.1 Ω typ. RDS(on), 3 A continuous drain current Power MOSFET using MDmesh™ K5 technology in PowerFLAT™ 5x6 VHV package. It delivers ultra-low gate charge (4 nC), 100% avalanche tested ruggedness, and integrated Zener-protected gate for high-voltage switching in offline SMPS and industrial AC-DC converters.
For engineers reviewing the STL4LN80K5 datasheet, STL4LN80K5 pinout, STL4LN80K5 application, or STL4LN80K5 equivalent, key selection criteria include its 800 V VDS, 2.6 Ω max RDS(on) at 10 V VGS, 3.3 °C/W Rthj-case, Zener-protected gate, and 15 V/ns diode recovery dv/dt rating under ISD ≤ 3 A conditions.
Technical Context
This device employs ST's proprietary vertical MDmesh™ K5 structure to minimize conduction and switching losses simultaneously. Its 110 pF Ciss, 9.5 pF Coss, and 0.4 pF Crss enable fast, low-loss hard-switching up to 400 V bus voltage with 4.7 Ω gate resistor.
The built-in back-to-back Zener diodes clamp gate-source voltage to ±30 V, eliminating external protection components. The device is rated for 12 A pulsed drain current and operates safely from –55 °C to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 800 V - supports primary-side switching in universal-input 85–265 VAC offline converters without derating |
| RDS(on) max | 2.6 Ω @ VGS = 10 V, ID = 1.2 A - enables <1.5 W conduction loss at 3 A DC |
| ID cont @ TC = 25 °C | 3 A - suitable for 30–50 W flyback or 60–80 W PSR-based adapters |
| Qg | 4 nC - reduces gate drive power and EMI in 65–130 kHz SMPS designs |
| Rthj-case | 3.3 °C/W - allows 38 W dissipation with ≤125 °C case rise above ambient |
| V(BR)GS0 | ±30 V - Zener clamping protects gate oxide during layout parasitic transients |
| dv/dt ruggedness | 50 V/ns @ VDS ≤ 640 V - ensures reliable operation during fast inductive turn-off |
Pinout & Package
STL4LN80K5 uses the PowerFLAT™ 5x6 VHV surface-mount package with exposed drain pad for thermal and electrical performance. The 8-pin configuration features dual-source and quad-drain terminals for low-inductance, high-current routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source | Low-inductance parallel connection to PCB ground plane; shared return path for 3 A load current |
| 4 | Gate | Control input requiring <4 nC charge; isolated from drain by Zener-protected gate oxide |
| 5, 6, 7, 8 | Drain | High-voltage output node tied to 800 V bus; thermally connected to exposed copper pad |
Key Features
| Feature | Design Value |
|---|---|
| MDmesh™ K5 vertical structure | Reduces RDS(on) × area by >30% vs. prior-generation 800 V MOSFETs, enabling smaller heatsinks |
| Ultra-low Qg (4 nC) | Enables use of low-power gate drivers (e.g., STGAP2S) without Miller-induced shoot-through risk |
| Zener-protected gate | Eliminates need for external gate clamp diodes in cost-sensitive consumer power supplies |
| 100% avalanche tested | Guarantees robustness against unclamped inductive switching events in relay drivers and PFC stages |
Applications
| Industrial AC-DC Adapters | LED Streetlight Drivers |
|---|---|
Use Scenario: 100 W open-frame power supply for factory automation sensors operating from 3-phase 400 VAC input. IC Role / Device Role / Timing Role: Primary-side switch in discontinuous conduction mode (DCM) flyback converter running at 100 kHz. Use Value: 2.6 Ω RDS(on) limits conduction loss to 2.3 W at full load; 3.3 °C/W Rthj-case enables natural-convection cooling. | Use Scenario: Constant-current LED driver for outdoor 150 W streetlights with surge immunity to 6 kV line transients. IC Role / Device Role / Timing Role: High-side switch in active PFC + LLC resonant stage handling 800 V DC link. Use Value: 800 V VDS rating avoids series stacking; Zener protection sustains gate integrity during lightning-induced common-mode spikes. |
| Offline UPS Inverters | Industrial Motor Starters |
Use Scenario: 500 VA line-interactive UPS with battery-backed 230 VAC output and zero-transfer-time switching. IC Role / Device Role / Timing Role: Half-bridge switch in 50 kHz SPWM inverter stage driving transformer-isolated output. Use Value: 12 A pulsed ID capability handles 3× overload surges; 50 V/ns dv/dt ruggedness prevents false turn-on during bus collapse. | Use Scenario: Solid-state contactor for 3 kW three-phase induction motor control in HVAC compressors. IC Role / Device Role / Timing Role: Phase-leg switch in 16 kHz six-step inverter with snubberless operation. Use Value: Integrated source-drain diode (VSD = 1.6 V) provides freewheeling path; avalanche rating absorbs energy from motor inductance at turn-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXTP3N80P | 800 V, 3.5 Ω RDS(on) max, TO-220 package, no integrated Zener | Requires external gate clamp; higher conduction loss increases heatsink size by ~40% | Prefer when through-hole mounting or legacy footprint compatibility is required |
| IPP60R190C7 | 650 V, 190 mΩ RDS(on), TO-220FP, CoolMOS™ C7, no Zener | Lower voltage rating requires derating below 400 VAC input; needs external protection | Choose only for 230 VAC-only systems where efficiency >85% at light load is critical |
Compared with IXTP3N80P and IPP60R190C7, STL4LN80K5 uniquely combines 800 V rating, Zener gate protection, and surface-mount PowerFLAT™ 5x6 VHV packaging-enabling compact, surge-resilient, and assembly-optimized designs for universal-input industrial power.
Availability
STL4LN80K5 is available at Aetrix Electronics and suitable for industrial AC-DC adapters, LED streetlight drivers, and offline UPS inverters requiring stable component supply across multi-year production cycles.
Supply support for STL4LN80K5 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
The MDmesh™ K5 product line targets high-efficiency, high-reliability power conversion in 600–1000 V applications-specifically engineered for reduced RDS(on) × Qg figure of merit in space-constrained offline SMPS.
FAQ
What is the maximum safe operating voltage for STL4LN80K5 in continuous conduction mode?
The absolute maximum drain-source voltage is 800 V, but for reliable long-term operation in continuous conduction mode, ST recommends limiting VDS to ≤640 V per the dv/dt ruggedness specification. This ensures immunity to spurious turn-on during fast voltage transients while maintaining SOA compliance at full current and temperature.
Does STL4LN80K5 require an external gate resistor for stability?
Yes-a minimum 4.7 Ω gate resistor is recommended per the datasheet's switching time test circuit. This value balances turn-on speed, EMI suppression, and gate oscillation damping. Lower values may cause ringing due to interaction with 18 Ω intrinsic gate resistance and PCB trace inductance, especially at >100 kHz switching frequencies.
Can STL4LN80K5 replace older MDmesh™ K3 or K4 devices in existing designs?
Yes, with verification of gate drive strength and thermal margin. STL4LN80K5 offers lower RDS(on) and Qg than K3/K4 equivalents, reducing both conduction and switching losses. However, its 5x6 mm footprint differs from legacy PowerFLAT™ 8x8 or TO-220 packages, requiring PCB layout revision for drop-in replacement.
Is the source-drain diode suitable for freewheeling in synchronous rectification?
No-the integrated body diode has 1.6 V forward voltage and unspecified reverse recovery characteristics at high di/dt. It is intended only for clamping and limited freewheeling in non-critical paths. For synchronous rectification, a dedicated low-VF Schottky or MOSFET with controlled Qrr must be used externally.
STL4LN80K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- MDmesh™ K5
- Package/Case:
- 8-PowerVDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 800 V
- Current - Continuous Drain (Id) @ 25°C:
- 3A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 2.6Ohm @ 1.2A, 10V
- Vgs(th) (Max) @ Id:
- 5V @ 100µA
- Gate Charge (Qg) (Max) @ Vgs:
- 4 nC @ 10 V
- Vgs (Max):
- ±30V
- Input Capacitance (Ciss) (Max) @ Vds:
- 110 pF @ 100 V
- FET Feature:
- -
- Power Dissipation (Max):
- 38W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerFlat™ (5x6) VHV
STL4LN80K5 FAQ
1.How can I place an order for STL4LN80K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for STL4LN80K5 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 STL4LN80K5 reliable?
The price and inventory of STL4LN80K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL4LN80K5 is usually 5 days.
3.What payment methods are accepted for STL4LN80K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL4LN80K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STL4LN80K5?
STL4LN80K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STL4LN80K5 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 STL4LN80K5?
For technical support, including STL4LN80K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL4LN80K5 requirements.
6.How does Aetrix verify that STL4LN80K5 is sourced from the original manufacturer or authorized distributors?
All STL4LN80K5 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 STL4LN80K5 meets industry standards.
7.What is the process for return or replacement of STL4LN80K5?
All STL4LN80K5 units undergo pre-shipment inspection (PSI). If there is an issue with STL4LN80K5, 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 STL4LN80K5 part is unused and in its original packaging.
Return procedure for STL4LN80K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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