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STMicroelectronics STL65N3LLH5
- Part No.:
- STL65N3LLH5
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- 8-PowerVDFN
- Datasheet:
-
STL65N3LLH5.pdf
- Description:
- MOSFET N-CH 30V 65A POWERFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,702
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Product details
Overview
STL65N3LLH5 from STMicroelectronics is an N-channel PowerFLAT™ 5x6 MOSFET optimized for high-efficiency switching in low-voltage DC-DC converters and motor control stages, featuring 30 V VDS, 4.8 mΩ RDS(on) @ 10 V, 19 A continuous current at PCB level, 12 nC total gate charge, and 180 mJ single-pulse avalanche energy - deployed in automotive body electronics and industrial power supplies.
For engineers reviewing the STL65N3LLH5 datasheet, STL65N3LLH5 pinout, STL65N3LLH5 application, or STL65N3LLH5 equivalent, key selection criteria include its low RDS(on) × Qg figure-of-merit, thermal resistance to PCB (31.3 °C/W), avalanche ruggedness, and compatibility with 4.5 V logic-level gate drive in compact surface-mount layouts.
Technical Context
This STripFET™ V device uses trench-gate technology to minimize conduction and switching losses simultaneously. Its 30 V rating targets 24 V system rails, while the 4.8 mΩ on-resistance at 10 V gate drive enables high-current operation with <1.1 V source-drain diode forward drop at 19 A.
The PowerFLAT™ 5x6 package integrates an exposed drain pad for direct thermal coupling to PCB copper, supporting 4 W dissipation at Tpcb = 25 °C. Gate charge parameters (Qg = 12 nC, Qgd = 4.7 nC) reflect fast turn-on/turn-off behavior with minimal Miller plateau duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Supports 24 V nominal bus systems with 20 % headroom for transients |
| RDS(on) max | 4.8 mΩ @ VGS = 10 V - Enables ≤1.8 W conduction loss at 19 A continuous load |
| ID (PCB) | 19 A @ Tpcb = 25 °C - Rated for sustained current delivery using standard FR-4 board layout |
| Qg | 12 nC - Reduces gate driver power demand and switching transition time in high-frequency SMPS |
| EAS | 180 mJ - Withstands unclamped inductive switching events without failure in motor drive H-bridges |
| Rthj-pcb | 31.3 °C/W - Defines thermal path efficiency from junction to PCB copper area (1 inch², 2 oz Cu) |
Pinout & Package
PowerFLAT™ 5x6 package with exposed drain pad on bottom side; thermally enhanced surface-mount outline measuring 5.0 × 6.0 mm, 0.83 mm typical height, and 1.27 mm pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–3 (Source) | Source connection | Three parallel pins reduce source inductance and improve current sharing in high-di/dt switching |
| 4 (Gate) | Control input | Single gate terminal compatible with standard logic-level drivers; low input capacitance (Ciss = 1500 pF) |
| Exposed Pad (Drain) | Drain connection & thermal path | Primary current path and main thermal interface to PCB; must be soldered to large copper pour |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(on) × Qg | Industry benchmark FoM enabling high-efficiency, high-frequency operation in synchronous buck converters |
| High avalanche ruggedness | 180 mJ EAS supports reliable operation under inductive load switching without external snubbers |
| Logic-level gate drive | Full enhancement at VGS = 4.5 V (RDS(on) ≤ 6 mΩ), compatible with 3.3 V/5 V microcontroller outputs |
| Optimized for PCB thermal dissipation | 31.3 °C/W Rthj-pcb allows 4 W continuous power handling using standard board layout without heatsink |
Applications
| Automotive Body Control Module | Industrial DC-DC Converter |
|---|---|
Use Scenario: Driving 12 V solenoids and LED loads in door modules and lighting controllers. IC Role / Device Role / Timing Role: High-side or low-side switch controlling load current up to 19 A with fast turn-on (<23 ns fall time). Use Value: Low RDS(on) minimizes heat generation in confined enclosures; avalanche rating handles inductive kickback from solenoid de-energization. |
Use Scenario: Synchronous rectifier in 24 V input, 5 V/15 A isolated flyback or buck converter. IC Role / Device Role / Timing Role: Secondary-side power switch operating at 200–500 kHz with low Qg-driven gate transitions. Use Value: 12 nC Qg reduces gate driver losses; 4.8 mΩ RDS(on) maintains >95 % efficiency at full load. |
| Brushless DC Motor Driver | Hot-Swap Protection Circuit |
Use Scenario: Half-bridge leg in 24 V BLDC inverter for fans and pumps. IC Role / Device Role / Timing Role: Low-side switching element with fast fall time (4.5 ns) and robust dV/dt immunity. Use Value: 76 A pulsed current rating supports peak torque demands; low Crss (39 pF) limits Miller-induced shoot-through risk. |
Use Scenario: Inrush current limiter and fault protection switch in 24 V backplane power distribution. IC Role / Device Role / Timing Role: Load switch with controlled turn-on via gate resistor; blocks reverse current via integrated body diode. Use Value: 1.1 V VSD forward drop ensures minimal voltage loss during hot-plug events; 8.5 A IAV withstands short-circuit surges. |
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 |
|---|---|---|---|
| IRLHS6342TRPBF | RDS(on) = 5.2 mΩ @ 4.5 V; Qg = 10.5 nC; same PowerFLAT 5x6 package | Slightly higher on-resistance but lower gate charge improves light-load efficiency | Preferred where gate drive voltage is limited to 4.5 V and switching frequency exceeds 1 MHz |
| DMTH3007LPSQ-13 | RDS(on) = 4.5 mΩ @ 10 V; Qg = 14.5 nC; PowerDI™ 5060 package (5.0 × 6.0 mm, different pinout) | Lower RDS(on) but higher Qg increases driver loss; non-pin-compatible layout | Selected when absolute minimum conduction loss is critical and board redesign is acceptable |
Compared with IRLHS6342TRPBF and DMTH3007LPSQ-13, STL65N3LLH5 delivers the best balance of low RDS(on), moderate Qg, and proven avalanche capability - making it optimal for cost-sensitive, thermally constrained 24 V industrial and automotive power stages requiring field reliability.
Availability
STL65N3LLH5 is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, and brushless DC motor drives requiring stable component supply across multi-year production cycles.
Supply support for STL65N3LLH5 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
This device belongs to ST's STripFET™ V Power MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in 12–30 V power systems where thermal performance and ruggedness are critical.
FAQ
What is the maximum continuous drain current for STL65N3LLH5 at PCB temperature?
The STL65N3LLH5 is rated for 19 A continuous drain current when mounted on a standard FR-4 PCB (1 inch², 2 oz Cu) at 25 °C ambient. This value drops to 11.8 A at 100 °C PCB temperature due to thermal derating governed by Rthj-pcb = 31.3 °C/W.
Can STL65N3LLH5 be driven directly by a 3.3 V microcontroller GPIO?
No - the gate threshold voltage (VGS(th)) ranges from 1.0 to 2.5 V, but full enhancement requires ≥4.5 V to achieve RDS(on) ≤ 6 mΩ. A 3.3 V GPIO cannot reliably switch the device into low-loss conduction; a level-shifting gate driver or dedicated MOSFET driver IC is required.
Is STL65N3LLH5 suitable for avalanche-prone circuits like relay or solenoid driving?
Yes - it is characterized for unclamped inductive switching with 8.5 A non-repetitive avalanche current and 180 mJ single-pulse avalanche energy at Tj = 25 °C. This makes it suitable for driving inductive loads without external clamping diodes in space-constrained designs.
What is the recommended PCB footprint for STL65N3LLH5?
The official recommended footprint specifies a 5.35 mm × 4.41 mm copper pad for the exposed drain, with 0.62 mm wide traces for pins 1–3 (source), 0.98 mm for pin 4 (gate), and 0.95 mm clearance between pads. Thermal vias under the drain pad are strongly advised to enhance heat transfer to inner layers.
STL65N3LLH5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STripFET™ V
- 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:
- 65A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 5.8mOhm @ 9.5A, 10V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 12 nC @ 4.5 V
- Vgs (Max):
- ±22V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1500 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)
STL65N3LLH5 FAQ
1.How can I place an order for STL65N3LLH5 through Aetrix?
Please submit a Request for Quotation (RFQ) for STL65N3LLH5 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 STL65N3LLH5 reliable?
The price and inventory of STL65N3LLH5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STL65N3LLH5 is usually 5 days.
3.What payment methods are accepted for STL65N3LLH5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STL65N3LLH5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STL65N3LLH5?
STL65N3LLH5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STL65N3LLH5 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 STL65N3LLH5?
For technical support, including STL65N3LLH5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STL65N3LLH5 requirements.
6.How does Aetrix verify that STL65N3LLH5 is sourced from the original manufacturer or authorized distributors?
All STL65N3LLH5 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 STL65N3LLH5 meets industry standards.
7.What is the process for return or replacement of STL65N3LLH5?
All STL65N3LLH5 units undergo pre-shipment inspection (PSI). If there is an issue with STL65N3LLH5, 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 STL65N3LLH5 part is unused and in its original packaging.
Return procedure for STL65N3LLH5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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