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Infineon Technologies IRL3103SPBF
- Part No.:
- IRL3103SPBF
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
IRL3103SPBF.pdf
- Description:
- MOSFET N-CH 30V 64A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,075
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Product details
Overview
IRL3103SPBF from Infineon Technologies (formerly International Rectifier) is a logic-level N-channel HEXFET® Power MOSFET in D2Pak package, rated for 30V VDS, 12 mΩ RDS(on) at VGS = 10V, and 64A continuous drain current at TC = 25°C. It features fully avalanche-rated ruggedness, 1320 mJ single-pulse avalanche energy, and fast switching with 8.9 ns turn-on delay and 9.1 ns fall time - deployed in DC-DC synchronous rectification and high-current motor drive half-bridges.
For engineers reviewing the IRL3103SPBF datasheet, IRL3103SPBF pinout, IRL3103SPBF application, or IRL3103SPBF equivalent, key selection criteria include its 4.5V gate threshold enabling direct microcontroller drive, low 1.6°C/W junction-to-case thermal resistance, 175°C maximum operating temperature, and D2Pak surface-mount power capability supporting >2W dissipation in PCB-mounted designs.
Technical Context
This MOSFET uses advanced planar HEXFET processing to achieve ultra-low on-resistance per die area while maintaining robust safe-operating-area (SOA) performance up to 175°C. Its body diode exhibits 1.2V forward voltage at 34A and 57–86 ns reverse recovery time, supporting high-frequency hard-switched topologies.
The device integrates 7.5 nH source and 4.5 nH drain parasitic inductance, and its gate charge profile shows 5.9 nC QGS and 17 nC QGD at VDS = 24V - critical for optimizing gate driver sizing and minimizing switching losses in 100–500 kHz power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum blocking voltage in high-side switch or synchronous rectifier configurations |
| RDS(on) | 12 mΩ @ VGS = 10V - Enables <1.5 W conduction loss at 35 A, suitable for 48V input bus applications |
| ID (continuous) | 64 A @ TC = 25°C - Supports high-current loads without external heatsinking in compact D2Pak footprint |
| Qg | 33 nC - Determines minimum gate driver peak current requirement (~1.5 A for 22 ns rise time) |
| EAS | 1320 mJ - Withstands unclamped inductive switching events in motor control or solenoid drivers |
| TJ max | 175°C - Allows operation in sealed enclosures or high-ambient industrial environments |
| dv/dt rating | 5.0 V/ns - Resists false turn-on during high-speed voltage transients in bridge-leg configurations |
Pinout & Package
The IRL3103SPBF is housed in a surface-mount D2Pak (TO-263) package with isolated tab, optimized for high-power density PCB layouts and thermal transfer via copper pour under the exposed drain pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Tab / Pin 2 (Drain) | Power output node | Electrically connected to drain; serves as primary thermal path to PCB copper; must be soldered to large thermal pad |
| Pin 1 (Gate) | Control input | High-impedance MOS gate requiring low-inductance routing and local 0.1 µF decoupling near driver IC |
| Pin 3 (Source) | Reference return | Common return for load current and gate drive loop; critical for minimizing noise coupling in high-di/dt switching |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | VGS(th) = 1.0–2.7 V enables direct interface with 3.3V/5V microcontrollers without level-shifting |
| Low RDS(on) × Qg figure-of-merit | 12 mΩ × 33 nC = 396 mΩ·nC - balances conduction and switching losses in 100–300 kHz SMPS |
| Full avalanche rating | Rated for repetitive 22 mJ and single-pulse 1320 mJ avalanche energy - eliminates need for external snubbers in inductive load switching |
| Lead-free and RoHS-compliant | Meets JEDEC J-STD-020 reflow profile; compatible with standard Pb-free assembly processes up to 260°C peak |
| Enhanced SOA at high temperature | Derates linearly from 94 W at 25°C to zero at 175°C - supports reliable operation in thermally constrained enclosures |
Applications
| Motor Drive Half-Bridge | Synchronous Buck Converter |
|---|---|
Use Scenario: Driving brushed DC motors or stepper phase windings in industrial automation controllers. IC Role / Device Role / Timing Role: Low-side switch in H-bridge topology, handling bidirectional 40–60 A peak currents with <100 ns dead-time tolerance. Use Value: 12 mΩ RDS(on) limits I²R loss to <2.9 W at 60 A, reducing heatsink volume by 40% vs. comparable TO-220 devices. | Use Scenario: High-efficiency 12V–48V input to 3.3V/5V/12V output buck converters in telecom power supplies. IC Role / Device Role / Timing Role: Synchronous rectifier replacing Schottky diode, operating at 200–500 kHz with body diode commutation. Use Value: 1.2V VSD and 57 ns trr minimize reverse recovery loss, improving efficiency by 1.8% at 20 A load vs. discrete diode solution. |
| Hot-Swap Controller | LED Driver Switch |
Use Scenario: Inrush current limiting and fault isolation in 24V/48V backplane power distribution units. IC Role / Device Role / Timing Role: Main pass element controlled by external current-sense amplifier and comparator, responding within 1 µs to overcurrent events. Use Value: 1320 mJ EAS withstands worst-case hot-plug transients without failure, eliminating need for redundant fusing. | Use Scenario: High-brightness LED string switching in architectural lighting systems with PWM dimming up to 20 kHz. IC Role / Device Role / Timing Role: High-side or low-side PWM switch controlling 30–50 A LED arrays, synchronized to dimming controller. Use Value: 9.1 ns tf and 120 ns tr ensure clean PWM edges, suppressing audible coil whine and minimizing EMI in Class B emissions testing. |
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 |
|---|---|---|---|
| IRF3205PBF | Higher RDS(on) (8.0 mΩ @ VGS = 10V), higher Qg (71 nC), TO-220 package | Requires through-hole mounting and larger heatsink; unsuitable for high-density surface-mount designs | Select when cost sensitivity outweighs board space constraints and thermal performance requirements are moderate |
| STP30NF20 | Higher VDS (200 V), higher RDS(on) (35 mΩ), same D2Pak package but non-logic-level (VGS(th) = 2–4 V) | Supports higher bus voltages but requires gate driver for full enhancement; less efficient at 30V operation | Select only when system architecture demands >100 V blocking capability and 30V operation is secondary |
Compared with IRL3103SPBF, IRF3205PBF trades surface-mount compatibility and lower gate charge for higher conduction loss and larger footprint, while STP30NF20 sacrifices low-voltage efficiency and logic-level drive for extended voltage range - making IRL3103SPBF optimal for compact, high-current 30V systems.
Availability
IRL3103SPBF is available at Aetrix Electronics and suitable for motor drives, DC-DC converters, hot-swap controllers, and LED drivers requiring stable component supply across industrial, telecom, and embedded power applications.
Supply support for IRL3103SPBF 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 is a global semiconductor leader specializing in power management, sensor, and automotive ICs, with roots in International Rectifier's pioneering HEXFET® technology.
The IRL3103SPBF belongs to Infineon's legacy logic-level HEXFET® power MOSFET product line, engineered for high-current, low-voltage switching in space-constrained industrial and consumer power systems where gate drive simplicity and thermal efficiency are critical.
FAQ
What is the maximum continuous drain current at 100°C case temperature?
The IRL3103SPBF supports 45 A continuous drain current at TC = 100°C with VGS = 10V, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the D2Pak package and ensures safe operation within the SOA boundary at elevated ambient conditions.
Does the body diode support synchronous rectification without external freewheeling diodes?
Yes - the integrated body diode has a forward voltage of 1.2 V at 34 A and reverse recovery time of 57 ns (typical), enabling reliable synchronous rectification in buck and flyback topologies up to 500 kHz without external diodes, provided gate timing accounts for trr and Qrr.
Can IRL3103SPBF be driven directly from a 3.3V microcontroller GPIO?
Yes - with a gate threshold voltage of 1.0–2.7 V and guaranteed enhancement at VGS = 4.5V (RDS(on) ≤ 16 mΩ), the IRL3103SPBF fully turns on using a 3.3V logic signal, though gate resistor selection must limit peak current to avoid GPIO overload during fast switching.
What is the recommended PCB layout for thermal performance?
For optimal thermal performance, use a minimum 1" × 1" copper pour connected to the D2Pak drain tab via ≥6 thermal vias (0.3 mm diameter, filled or plated), placed directly beneath the package. Keep gate and source traces short and low-inductance, and isolate high-di/dt loops from sensitive analog sections to prevent coupling.
IRL3103SPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 64A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 12mOhm @ 34A, 10V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 33 nC @ 4.5 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1650 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 94W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
IRL3103SPBF FAQ
1.How can I place an order for IRL3103SPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRL3103SPBF 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 IRL3103SPBF reliable?
The price and inventory of IRL3103SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRL3103SPBF is usually 5 days.
3.What payment methods are accepted for IRL3103SPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRL3103SPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRL3103SPBF?
IRL3103SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRL3103SPBF 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 IRL3103SPBF?
For technical support, including IRL3103SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRL3103SPBF requirements.
6.How does Aetrix verify that IRL3103SPBF is sourced from the original manufacturer or authorized distributors?
All IRL3103SPBF 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 IRL3103SPBF meets industry standards.
7.What is the process for return or replacement of IRL3103SPBF?
All IRL3103SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRL3103SPBF, 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 IRL3103SPBF part is unused and in its original packaging.
Return procedure for IRL3103SPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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