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STMicroelectronics STL75NH3LL
- Part No.:
- STL75NH3LL
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
STL75NH3LL.pdf
- Description:
- MOSFET N-CH 30V 75A POWERFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,883
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Product details
Overview
STL75NH3LL from STMicroelectronics is an N-channel Power MOSFET optimized for high-efficiency switching in space-constrained DC-DC converters and motor drivers, featuring 30 V VDS, 4 mΩ RDS(on) at VGS = 10 V, 20 A continuous current (PCB-limited), ultra-low 18–24 nC total gate charge, and PowerFLAT™ (6×5) package with 1 mm max profile.
For engineers reviewing the STL75NH3LL datasheet, STL75NH3LL pinout, STL75NH3LL application, or STL75NH3LL equivalent, key selection criteria include low RDS(on) at 4.5 V drive, fast switching (td(on) = 8 ns, tf = 20 ns), thermal resistance to PCB (31.3 °C/W), and suitability for synchronous rectification and load-switching where board area and thermal performance are critical.
Technical Context
This MOSFET employs ST's STripFET™ III process and is designed for high-frequency switching with minimal conduction and switching losses. Its low gate charge (Qg = 18–24 nC) and low input capacitance (Ciss = 1810 pF) enable efficient gate driving at 1–2 MHz in buck converters.
The device uses a drain-connected PowerFLAT™ (6×5) thermally enhanced package with exposed drain pad for direct PCB heat sinking. It supports logic-level gate drive (VGS(th) = 1 V typ.) and exhibits low reverse recovery charge (Qrr = 1.9 nC) for improved body diode performance in synchronous topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum blocking voltage for 24 V nominal bus systems with margin |
| RDS(on) @ 10 V | 4.0–5.7 mΩ - Enables <1 W conduction loss at 20 A in compact layouts |
| Qg | 18–24 nC - Reduces gate driver power and enables fast turn-on with low external RG |
| ID (PCB-limited) | 20 A continuous - Sustained current rating on standard FR-4 (1 in², 2 oz Cu) |
| Rthj-pcb | 31.3 °C/W - Enables ~4 W dissipation before exceeding 125 °C junction under typical layout |
| VGS(th) | 1.0 V min - Ensures reliable turn-on with 3.3 V logic-level control signals |
| tf | 20 ns - Supports >500 kHz switching with low overlap loss in hard-switched topologies |
Pinout & Package
STL75NH3LL uses the PowerFLAT™ (6×5) package: 5 mm × 6 mm footprint, 1 mm max height, exposed drain pad on bottom for thermal conduction. Pin 1 (Source) and Pin 2 (Gate) are on one side; Drain is the entire bottom thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (S) | Source terminal | Primary current return path; tied to ground or low-side reference in half-bridge |
| Pin 2 (G) | Gate terminal | Control input; requires <24 nC charge for full enhancement; sensitive to ESD |
| Drain (exposed pad) | Drain terminal / thermal interface | High-current output node and primary heat path to PCB copper; must be soldered to large copper pour |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low gate charge | 18–24 nC enables efficient 1–2 MHz operation with minimal gate driver loss |
| Chip-scale PowerFLAT™ (6×5) | 5×6 mm footprint saves >50% board area vs. SO-8 while improving thermal coupling to PCB |
| Low-profile construction | Max 1.0 mm height allows use in ultra-thin power modules and portable equipment |
| Enhanced die-to-footprint ratio | Optimized silicon utilization delivers 75 A case-rated current in compact outline |
| Logic-level threshold | VGS(th) = 1.0 V min ensures compatibility with 3.3 V microcontrollers and PWM controllers |
Applications
| DC-DC Buck Converter | Motor Driver Half-Bridge |
|---|---|
Use Scenario: High-efficiency 12 V → 3.3 V/5 V point-of-load conversion in networking equipment. IC Role / Device Role: Synchronous rectifier (low-side switch) with 4 mΩ RDS(on) minimizing conduction loss. Use Value: Achieves >95% efficiency at 15 A load due to low Qg and RDS(on), reducing thermal stress on adjacent components. | Use Scenario: 24 V brushed DC motor control in industrial actuators with PWM up to 20 kHz. IC Role / Device Role: Low-side switch in H-bridge with fast 20 ns fall time enabling precise current regulation. Use Value: Low RDS(on) limits I²R heating during stall conditions; exposed drain pad maintains Tj < 125 °C at 20 A. |
| USB-C Power Delivery Load Switch | Hot-Swap Controller Back-End |
Use Scenario: Inrush-limited 20 V/3 A USB PD sink path in portable docking stations. IC Role / Device Role: Main pass transistor controlled by dedicated load-switch IC with soft-start. Use Value: 1 V VGS(th) ensures full enhancement at 3.3 V gate drive; low Qg enables fast, controlled ramp-up without overshoot. | Use Scenario: 12 V server board hot-swap protection with current limiting and fault reporting. IC Role / Device Role: Primary power path FET with integrated current-sense capability via RDS(on) monitoring. Use Value: Tight RDS(on) tolerance (±15%) supports accurate current sensing; low thermal resistance sustains 12.5 A at 100 °C case. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon BSC014N04LS | RDS(on) = 1.4 mΩ @ 10 V; larger PQFN 3.3×3.3 mm; higher Qg (32 nC) | Better conduction loss but slower switching; less suitable for >1 MHz designs | Prefer when lower RDS(on) dominates over switching speed and board area |
| ON Semiconductor NTMFS4C09NT1G | RDS(on) = 4.5 mΩ @ 10 V; same Power-33 (5×6 mm); Qg = 21 nC; VGS(th) = 1.2 V min | Nearly identical specs; qualified per AEC-Q101 but not required for industrial use | Drop-in substitute where automotive qualification adds value or supply chain diversification is needed |
Compared with STL75NH3LL, BSC014N04LS trades higher gate charge and larger size for lower on-resistance, while NTMFS4C09NT1G offers nearly identical electrical behavior with automotive-grade reliability-making it ideal for industrial designs requiring extended lifecycle assurance.
Availability
STL75NH3LL is available at Aetrix Electronics and suitable for DC-DC converters, motor drivers, USB-C power delivery systems, and hot-swap controllers requiring stable component supply and proven thermal performance in compact footprints.
Supply support for STL75NH3LL 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 analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The STL75NH3LL belongs to ST's STripFET™ Power MOSFET product line, engineered specifically for high-frequency, high-density power conversion where low RDS(on), low Qg, and thermal efficiency in chip-scale packages are essential.
FAQ
Is STL75NH3LL suitable for 3.3 V gate drive?
Yes. With a minimum gate threshold voltage of 1.0 V and typical RDS(on) of 4.0 mΩ at VGS = 4.5 V, the device fully enhances using standard 3.3 V logic outputs. However, RDS(on) rises to ~5.7 mΩ at 4.5 V, so conduction loss increases slightly versus 10 V drive.
What is the maximum continuous current rating for STL75NH3LL on a standard PCB?
The datasheet specifies 20 A continuous current when mounted on a 1 in² FR-4 board with 2 oz copper, based on Rthj-pcb = 31.3 °C/W and Tj ≤ 150 °C. This rating assumes adequate copper pour under the exposed drain pad and no additional heatsinking.
Does STL75NH3LL have integrated ESD protection?
No. The device has no built-in ESD protection circuitry. Gate-source breakdown is rated at ±16 V, and IGSS is ±100 nA at ±16 V. External TVS diodes or series gate resistors are recommended in handling and layout to prevent electrostatic damage during assembly or operation.
Can STL75NH3LL be used in synchronous rectification topologies?
Yes. Its low Qrr (1.9 nC), fast trr (22 ns), and low VSD (1.3 V at 20 A) make it well-suited for synchronous rectification in buck and flyback converters. The body diode's soft recovery reduces ringing and EMI compared to standard MOSFETs.
STL75NH3LL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STripFET™
- Package/Case:
- 8-PowerVDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 75A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 5.7mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 24 nC @ 4.5 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1810 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 60W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerFlat™ (5x6)
STL75NH3LL FAQ
1.How can I place an order for STL75NH3LL through Aetrix?
Please submit a Request for Quotation (RFQ) for STL75NH3LL 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 STL75NH3LL reliable?
The price and inventory of STL75NH3LL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL75NH3LL is usually 5 days.
3.What payment methods are accepted for STL75NH3LL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL75NH3LL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STL75NH3LL?
STL75NH3LL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STL75NH3LL 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 STL75NH3LL?
For technical support, including STL75NH3LL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL75NH3LL requirements.
6.How does Aetrix verify that STL75NH3LL is sourced from the original manufacturer or authorized distributors?
All STL75NH3LL 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 STL75NH3LL meets industry standards.
7.What is the process for return or replacement of STL75NH3LL?
All STL75NH3LL units undergo pre-shipment inspection (PSI). If there is an issue with STL75NH3LL, 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 STL75NH3LL part is unused and in its original packaging.
Return procedure for STL75NH3LL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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