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STMicroelectronics STL7LN80K5
- Part No.:
- STL7LN80K5
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
STL7LN80K5.pdf
- Description:
- MOSFET N-CH 800V 5A POWERFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,459
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Product details
Overview
STL7LN80K5 from STMicroelectronics is an N-channel 800 V, 0.95 Ω typ. RDS(on), 5 A Power MOSFET using MDmesh™ K5 vertical structure in PowerFLAT™ 5x6 VHV package. It delivers ultra-low gate charge (12 nC), 100% avalanche tested performance, and integrated Zener-protected gate for robust switching in high-voltage AC-DC converters and industrial SMPS.
For engineers reviewing the STL7LN80K5 datasheet, STL7LN80K5 pinout, STL7LN80K5 application, or STL7LN80K5 equivalent, key selection criteria include its 800 V VDS, 0.95 Ω typ. RDS(on), 12 nC total gate charge, 3 °C/W Rthj-case, and built-in gate-source Zener protection at ±30 V.
Technical Context
This MOSFET employs ST's proprietary MDmesh™ K5 technology - a high-voltage vertical superjunction architecture enabling reduced on-resistance per die area and minimized output capacitance (Coss = 22 pF). Its optimized charge distribution supports fast switching with low EMI generation.
The device integrates back-to-back gate-source Zener diodes rated at 30 V, eliminating external clamping components. Its rugged dv/dt capability (50 V/ns) and unclamped inductive switching rating (EAS = 200 mJ) support reliable operation in hard-switched PFC and flyback topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 800 V - supports primary-side switching in 400 VAC rectified bus applications without derating. |
| RDS(on) typ. | 0.95 Ω - enables low conduction loss at 5 A continuous drain current (TC = 25 °C). |
| Qg | 12 nC - reduces gate drive power and enables use with low-current drivers in high-frequency designs. |
| Rthj-case | 3 °C/W - allows 42 W dissipation at TC = 25 °C; requires direct thermal pad connection to PCB copper pour. |
| EAS | 200 mJ - sustains single-pulse avalanche energy without failure, critical for overvoltage transients in offline converters. |
| V(BR)GSO | ±30 V - built-in Zener clamps gate voltage, preventing oxide damage during ESD or gate ringing events. |
| dv/dt ruggedness | 50 V/ns - ensures immunity to false turn-on during high-slew-rate voltage transitions in bridge-leg configurations. |
Pinout & Package
STL7LN80K5 is housed in a surface-mount PowerFLAT™ 5x6 VHV package with exposed drain thermal pad (pins 5–8), single gate terminal (pin 4), and source terminals (pins 1–3). The package supports high-power density layout with low-inductance source return paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 (S) | Source | Low-inductance parallel source connection; must be routed to ground plane with multiple vias for thermal and EMI control. |
| 4 (G) | Gate | Single-point gate input; requires localized RC snubber if used in high-dv/dt environments. |
| 5, 6, 7, 8 (D) | Drain | Exposed thermal pad and top-side pins form unified drain node; serves as primary heat path to PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| MDmesh™ K5 vertical structure | Reduces RDS(on) × area by >30% vs prior-generation 800 V superjunction MOSFETs, enabling smaller heatsinks. |
| Ultra-low Qg (12 nC) | Enables 100+ kHz operation with minimal gate driver losses, improving efficiency in LLC resonant converters. |
| Zener-protected gate | Eliminates need for external gate clamp diodes, reducing BOM count and PCB footprint in space-constrained adapters. |
| 100% avalanche tested | Guarantees robustness against inductive kickback in flyback and forward converter primary switches. |
| PowerFLAT™ 5x6 VHV package | Provides 3 °C/W junction-to-case thermal resistance and supports automated optical inspection (AOI) due to coplanar leads. |
Applications
| Industrial AC-DC Power Supplies | Server & Telecom SMPS |
|---|---|
Use Scenario: Primary-side switch in 500–1000 W active clamp forward or half-bridge converters operating from 380 VDC bus. IC Role / Device Role / Timing Role: High-voltage power switch handling 800 V blocking and 5 A conduction with <25 ns turn-off delay. Use Value: Low RDS(on) and Coss reduce conduction and switching losses, enabling >94% efficiency at full load. | Use Scenario: Main switch in 80+ Titanium-certified 1 kW server PSUs with digital control and high-frequency PFC stages. IC Role / Device Role / Timing Role: Fast-switching primary FET synchronized to 100–300 kHz PWM with minimal dead-time penalty. Use Value: 12 nC Qg and 50 V/ns dv/dt ruggedness allow stable operation under tight timing margins and high bus transients. |
| LED Street Lighting Drivers | Industrial Motor Drives (Auxiliary Supply) |
Use Scenario: Isolated flyback controller in outdoor-rated 150 W LED drivers subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Avalanche-rugged main switch absorbing repetitive 200 mJ pulses during line transients. Use Value: Integrated Zener protection and 100% tested EAS eliminate external TVS, lowering system cost and failure risk. | Use Scenario: Auxiliary DC-DC converter supplying gate drivers and logic in 3-phase IGBT inverters for HVAC compressors. IC Role / Device Role / Timing Role: Compact, high-reliability 800 V switch powering isolated bias rails in harsh EMI environments. Use Value: PowerFLAT™ 5x6 VHV package provides superior thermal coupling to heatsink-mounted PCBs, maintaining Tj < 125 °C at 3.4 A continuous. |
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 |
|---|---|---|---|
| IPW60R099P7XKSA1 | 650 V VDS, 0.099 Ω RDS(on), TO-247 package, higher Rthj-case (0.5 °C/W) | Limited to ≤380 VAC input systems; unsuitable for 400 VAC rectified bus without derating. | Select only when lower conduction loss at 650 V is prioritized over voltage headroom and surface-mount assembly. |
| STW48N60M2 | 600 V VDS, 0.065 Ω RDS(on), TO-247 package, no integrated Zener | Requires external gate protection; not rated for 800 V systems or unclamped inductive loads. | Prefer only in legacy 600 V designs where board space permits through-hole mounting and external clamping. |
Compared with IPW60R099P7XKSA1 and STW48N60M2, STL7LN80K5 uniquely combines 800 V rating, surface-mount PowerFLAT™ packaging, integrated Zener protection, and 200 mJ avalanche energy - making it the only drop-in solution for compact, surge-immune 400 VAC offline converters requiring zero external gate protection.
Availability
STL7LN80K5 is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, server & telecom SMPS, and LED street lighting drivers requiring stable component supply and long-term lifecycle support.
Supply support for STL7LN80K5 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.
The STL7LN80K5 belongs to ST's MDmesh™ K5 high-voltage MOSFET product line, engineered specifically for high-efficiency, high-power-density offline switch-mode power supplies operating up to 400 VAC input.
FAQ
What is the maximum continuous drain current at 100 °C case temperature?
The STL7LN80K5 supports 3.4 A continuous drain current at TC = 100 °C, as specified in Table 2 of the datasheet. This rating is limited by junction temperature and requires adequate PCB copper area to maintain thermal resistance below 3 °C/W.
Does the device require external gate protection?
No. The STL7LN80K5 integrates back-to-back Zener diodes between gate and source with ±30 V breakdown voltage, providing inherent protection against ESD and gate overvoltage events without external components.
Can STL7LN80K5 replace older MDmesh™ K3 or K4 devices in existing designs?
Yes - it is pin-compatible with earlier PowerFLAT™ 5x6 VHV MOSFETs like STL5N80K3 and STL6N80K4. Its lower RDS(on) (0.95 Ω vs 1.25 Ω) and reduced Qg (12 nC vs 15 nC) improve efficiency and enable higher switching frequencies without layout changes.
What is the recommended PCB footprint for thermal performance?
The recommended footprint (Figure 21) specifies a 4.4 mm × 2.5 mm thermal pad with eight 0.3 mm vias spaced evenly beneath it. This configuration achieves the rated 3 °C/W Rthj-case when mounted on 1 inch² FR-4 with 2 oz copper.
STL7LN80K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- MDmesh™
- 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:
- 5A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 1.15Ohm @ 2.5A, 10V
- Vgs(th) (Max) @ Id:
- 5V @ 100µA
- Gate Charge (Qg) (Max) @ Vgs:
- 12 nC @ 10 V
- Vgs (Max):
- ±30V
- Input Capacitance (Ciss) (Max) @ Vds:
- 270 pF @ 100 V
- FET Feature:
- -
- Power Dissipation (Max):
- 42W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerFlat™ (5x6)
STL7LN80K5 FAQ
1.How can I place an order for STL7LN80K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for STL7LN80K5 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 STL7LN80K5 reliable?
The price and inventory of STL7LN80K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL7LN80K5 is usually 5 days.
3.What payment methods are accepted for STL7LN80K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL7LN80K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STL7LN80K5?
STL7LN80K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STL7LN80K5 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 STL7LN80K5?
For technical support, including STL7LN80K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL7LN80K5 requirements.
6.How does Aetrix verify that STL7LN80K5 is sourced from the original manufacturer or authorized distributors?
All STL7LN80K5 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 STL7LN80K5 meets industry standards.
7.What is the process for return or replacement of STL7LN80K5?
All STL7LN80K5 units undergo pre-shipment inspection (PSI). If there is an issue with STL7LN80K5, 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 STL7LN80K5 part is unused and in its original packaging.
Return procedure for STL7LN80K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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