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Infineon Technologies SPD50N03S2L
- Part No.:
- SPD50N03S2L
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
SPD50N03S2L.pdf
- Description:
- N-CHANNEL POWER MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
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Product details
Overview
SPD50N03S2L from Infineon Technologies is an N-channel enhancement-mode power MOSFET designed for high-current, low-voltage switching in DC-DC converters, motor drives, and load switches. It features a 30 V VDS, 5.7–7.3 mΩ RDS(on) at VGS = 10 V and ID = 50 A, 175 °C maximum junction temperature, and avalanche-rated operation for robustness in inductive switching.
For engineers reviewing the SPD50N03S2L datasheet, SPD50N03S2L pinout, SPD50N03S2L application, or SPD50N03S2L equivalent, key selection criteria include its 7.3 mΩ on-resistance at 10 V gate drive, 200 A pulsed drain current capability, 14.1–21.1 nC Qgd, 0.7–1.1 K/W RthJC, and TO-252-3 (PG-TO252-3) surface-mount package with exposed drain pad for thermal performance.
Technical Context
This MOSFET employs Infineon's OptiMOS™ 2nd generation trench technology optimized for low gate charge × RDS(on) figure-of-merit (FOM), enabling high-efficiency synchronous rectification and fast-switching SMPS topologies. Its 175 °C rated junction supports operation in thermally constrained environments without derating.
The device integrates a robust body diode with 41–51 ns reverse recovery time and 46–58 nC Qrr, supporting hard-switched and resonant converter designs. Its dv/dt rating of 6 kV/µs ensures immunity to parasitic turn-on in high-speed gate-drive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum blocking voltage for 24 V nominal bus systems with margin |
| RDS(on) | 5.7–7.3 mΩ @ VGS=10 V, ID=50 A - Enables <1.5 W conduction loss at 50 A |
| ID (cont) | 50 A @ TC=25 °C - Sustained current handling with standard heatsinking |
| Qgd | 14.1–21.1 nC - Low gate-drain charge minimizes Miller-induced switching delay |
| RthJC | 0.7–1.1 K/W - Enables >100 W power dissipation with minimal case-to-junction delta-T |
| EAS | 250 mJ - Avalanche energy rating supports unclamped inductive switching up to 50 A |
| VGS(th) | 2.1–4.0 V - Gate threshold compatible with 3.3 V and 5 V logic-level drivers |
Pinout & Package
SPD50N03S2L is housed in a PG-TO252-3 (also known as D-Pak) surface-mount package with an exposed drain pad for enhanced thermal transfer. The package meets JEDEC MO-238 standards and is optimized for PCB copper area cooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Source) | Source terminal | Low-side reference node; connected to PCB ground plane for EMI control |
| Pin 2 (Gate) | Control input | High-impedance MOS gate requiring <10.5 nC total charge for full enhancement |
| Pin 3 (Drain) | Power output / Drain connection | Exposed metal pad - electrically tied to drain and serves as primary thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| Optimized FOM (Qg × RDS(on)) | Enables >95% efficiency in 12 V input buck converters at 500 kHz |
| Avalanche-rated operation | Guarantees single-pulse ruggedness without external snubbers in motor H-bridge freewheeling |
| 175 °C Tjmax | Permits full-rated current delivery in sealed enclosures or high ambient industrial environments |
| Low Qrr (46–58 nC) | Reduces diode recovery losses and EMI in synchronous rectifier and LLC resonant applications |
Applications
| DC-DC Buck Converter | Automotive Body Control Module |
|---|---|
Use Scenario: High-efficiency 12 V to 3.3 V/5 V point-of-load conversion in infotainment head units. IC Role / Device Role: Synchronous high-side switch with 50 A peak current capability. Use Value: 7.3 mΩ RDS(on) limits conduction loss to <1.8 W at 50 A, reducing thermal footprint by 35% vs. legacy 10 mΩ devices. | Use Scenario: Load switching for interior lighting, window lifters, and seat actuators. IC Role / Device Role: Low-side driver with integrated avalanche energy handling for inductive kickback suppression. Use Value: 250 mJ EAS withstands repeated 24 V inductive transients without derating or external clamping. |
| Industrial Motor Drive | Server VRM High-Current Phase |
Use Scenario: Half-bridge leg in 24 V brushless DC fan controllers. IC Role / Device Role: Low-RDS(on) power switch with fast 36–54 ns rise time for PWM frequencies up to 100 kHz. Use Value: 14.1–21.1 nC Qgd enables clean gate drive with 6.8 Ω series resistor, minimizing shoot-through risk. | Use Scenario: Multiphase CPU/GPU voltage regulator delivering >100 A per phase. IC Role / Device Role: High-current phase-leg MOSFET with 0.7 K/W RthJC for direct thermal coupling to heatsink. Use Value: Thermal resistance allows sustained 50 A operation at <105 °C junction temp with 6 cm² PCB copper area. |
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 |
|---|---|---|---|
| IRL3803PbF | RDS(on) = 8.0 mΩ (min), Qg = 32 nC, RthJC = 1.2 K/W, same TO-252-3 | Higher conduction loss and slower switching; suitable only for <300 kHz operation | Prefer SPD50N03S2L where efficiency >94% or thermal margin <15 °C is required |
| STL110N3LLH6 | RDS(on) = 5.5 mΩ (typ), Qgd = 17.5 nC, but Tjmax = 150 °C and no avalanche rating | Lacks avalanche ruggedness and high-temp reliability for automotive under-hood use | Choose SPD50N03S2L for safety-critical or thermally aggressive deployments |
Compared with IRL3803PbF and STL110N3LLH6, SPD50N03S2L delivers superior thermal robustness (175 °C), guaranteed avalanche energy (250 mJ), and lower Qgd/RDS(on) FOM-making it optimal for high-reliability, high-frequency, and high-temperature power stages.
Availability
SPD50N03S2L is available at Aetrix Electronics and suitable for DC-DC converters, automotive body electronics, industrial motor controls, and server VRMs requiring stable component supply and long-term lifecycle support.
Supply support for SPD50N03S2L 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive microcontrollers, and sensor solutions, with global manufacturing and R&D infrastructure.
SPD50N03S2L belongs to the OptiMOS™ 2nd generation power MOSFET product line, engineered specifically for high-current, low-voltage switching in space-constrained and thermally demanding applications such as automotive ECUs and server power supplies.
FAQ
Is SPD50N03S2L suitable for 3.3 V gate drive?
No. SPD50N03S2L has a gate threshold voltage range of 2.1–4.0 V and requires ≥4.5 V for reliable enhancement. At 3.3 V, RDS(on) rises sharply above 20 mΩ, increasing conduction loss significantly. Use with 5 V or 10 V gate drivers for full performance.
What is the maximum PCB copper area needed for full 50 A continuous operation?
For continuous 50 A operation at TC = 25 °C, the datasheet specifies a minimum 6 cm² copper area on FR4 PCB (single layer, 70 µm thick) connected to the exposed drain pad. Smaller areas require current derating per the ID vs. TC curve on page 3.
Does SPD50N03S2L have a built-in ESD protection diode?
No. SPD50N03S2L does not integrate gate ESD protection. External 10–100 Ω gate series resistance and TVS clamping are recommended during handling and PCB layout to prevent gate oxide damage from human-body-model (HBM) discharges.
Can SPD50N03S2L replace SPD50N03S2-07 in existing designs?
Yes. SPD50N03S2L is the lead-free, RoHS-compliant variant of SPD50N03S2-07, sharing identical electrical specifications, thermal characteristics, pinout, and package dimensions. No layout or firmware changes are required for drop-in replacement.
SPD50N03S2L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CoolMOS™
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 50A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 6.4mOhm @ 50A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 85µA
- Gate Charge (Qg) (Max) @ Vgs:
- 68 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2530 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 136W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO252
SPD50N03S2L FAQ
1.How can I place an order for SPD50N03S2L through Aetrix?
Please submit a Request for Quotation (RFQ) for SPD50N03S2L 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 SPD50N03S2L reliable?
The price and inventory of SPD50N03S2L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPD50N03S2L is usually 5 days.
3.What payment methods are accepted for SPD50N03S2L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPD50N03S2L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPD50N03S2L?
SPD50N03S2L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPD50N03S2L 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 SPD50N03S2L?
For technical support, including SPD50N03S2L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPD50N03S2L requirements.
6.How does Aetrix verify that SPD50N03S2L is sourced from the original manufacturer or authorized distributors?
All SPD50N03S2L 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 SPD50N03S2L meets industry standards.
7.What is the process for return or replacement of SPD50N03S2L?
All SPD50N03S2L units undergo pre-shipment inspection (PSI). If there is an issue with SPD50N03S2L, 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 SPD50N03S2L part is unused and in its original packaging.
Return procedure for SPD50N03S2L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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