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Infineon Technologies IRLL2703TRPBF
- Part No.:
- IRLL2703TRPBF
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
IRLL2703TRPBF.pdf
- Description:
- MOSFET N-CH 30V 3.9A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:8,445
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Product details
Overview
IRLL2703TRPBF from Infineon Technologies (formerly International Rectifier) is a 30V N-channel enhancement-mode power MOSFET in SOT-223 package, featuring RDS(on) = 0.045Ω @ VGS = 10V, ID = 3.9A, and fully avalanche-rated operation. It serves as a low-side switching element in DC-DC converters, load switches, and motor drive half-bridges where compact size and thermal efficiency are critical.
For engineers reviewing the IRLL2703TRPBF datasheet, IRLL2703TRPBF pinout, IRLL2703TRPBF application, or IRLL2703TRPBF equivalent, key selection criteria include its 30V VDS, 0.045Ω on-resistance at 10V gate drive, SOT-223 thermal performance (RθJA = 90°C/W on FR-4), fast 7.4ns turn-on delay, and integrated body diode with 42ns reverse recovery time.
Technical Context
This HEXFET® device uses fifth-generation silicon processing to minimize conduction loss while maintaining rugged unclamped inductive switching capability. Its gate threshold voltage (1.0–2.4V) enables compatibility with 3.3V and 5V logic-level drivers, and the optimized gate charge profile (Qg = 9.3nC typ.) supports efficient high-frequency PWM operation up to several hundred kHz.
The SOT-223 package integrates an exposed drain tab for direct PCB heatsinking, enabling 1.0W continuous power dissipation on standard FR-4 and 2.1W on 1-inch² copper. The device's dynamic dv/dt rating (5.0V/ns) and full avalanche energy rating (180mJ single-pulse) support reliable operation in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30V - Maximum blocking voltage for 24V rail applications with margin |
| RDS(on) | 0.045Ω @ VGS = 10V - Enables ≤170mW conduction loss at 3.9A DC |
| ID (continuous) | 3.9A @ TA = 25°C - Sustained current capability with standard PCB layout |
| Qg | 9.3nC typ. - Low gate drive power requirement for 3.3V/5V microcontrollers |
| tr/tf | 24ns/14ns - Supports >500kHz switching in synchronous buck topologies |
| EAS | 180mJ - Withstands unclamped inductive energy without failure in relay/motor snubbing |
| VSD | 1.0V @ IS = 2.3A - Forward voltage of integrated body diode for freewheeling paths |
Pinout & Package
The IRLL2703TRPBF is housed in a surface-mount SOT-223 package with an exposed drain tab for thermal conduction to the PCB. Pin 1 is Gate, Pin 2 is Drain (tab-connected), and Pin 3 is Source - standard three-terminal configuration with drain tied to the thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Gate) | Control input | Receives logic-level voltage to modulate channel conductivity; requires <2.4V threshold for turn-on |
| Pin 2 (Drain) | High-side power node | Internally connected to exposed metal tab; must be routed to ground plane or heatsink for thermal management |
| Pin 3 (Source) | Reference return path | Serves as common reference for gate drive and load current return; ties to system ground or low-side switch node |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RDS(on) | 0.045Ω @ 10V enables <0.7W total loss at 4A in compact SOT-223 |
| Fully avalanche-rated | 180mJ single-pulse EAS eliminates need for external clamping in inductive loads |
| Logic-level gate drive | 1.0–2.4V VGS(th) ensures full enhancement with 3.3V MCU GPIOs |
| Enhanced thermal design | SOT-223 tab allows 1.0W dissipation on FR-4 - 2.5× higher than standard SOT-23 |
| Fast switching | 7.4ns td(on) + 24ns tr supports high-efficiency SMPS above 300kHz |
Applications
| DC-DC Buck Converter | USB Power Delivery Switch |
|---|---|
Use Scenario: High-efficiency 5V-to-3.3V step-down converter in portable instrumentation. IC Role / Device Role / Timing Role: Low-side synchronous rectifier controlled by PWM controller with 500kHz switching frequency. Use Value: 0.045Ω RDS(on) reduces conduction loss by 40% vs. comparable SOT-23 MOSFETs, improving light-load efficiency. | Use Scenario: Overcurrent-protected 5V/3A USB port power switch in docking stations. IC Role / Device Role / Timing Role: Load switch enabling/disabling downstream bus power under MCU control. Use Value: Logic-level gate ensures full turn-on from 3.3V GPIO; 180mJ avalanche rating withstands hot-plug transients. |
| Brushed DC Motor Driver | LED Constant-Current Dimming |
Use Scenario: H-bridge half-bridge leg driving 12V/2A brushed motor in HVAC actuators. IC Role / Device Role / Timing Role: Low-side switch commutating motor current with PWM duty cycle modulation. Use Value: 42ns trr minimizes body-diode conduction loss during dead-time, reducing heat rise by ~15°C. | Use Scenario: Analog-dimmed LED string driver using constant-current sink topology. IC Role / Device Role / Timing Role: Adjustable current-sink transistor regulated via DAC-controlled gate voltage. Use Value: Linear Derating Factor (8.3mW/°C) enables stable 300mA operation up to 85°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3025LSD-13 | RDS(on) = 0.025Ω @ 4.5V, but SOT-23-3 package limits power handling to 0.7W | Better RDS(on) at low VGS, yet unsuitable for >1.5A continuous due to thermal constraints | Select when gate drive is limited to 4.5V and current ≤1.2A; avoid for motor or converter output stages |
| SI2303DS-T1-GE3 | RDS(on) = 0.095Ω @ 4.5V, higher threshold (1.2–2.5V), and lower ID (3.2A) | Lower cost but higher conduction loss and reduced avalanche robustness (EAS = 80mJ) | Acceptable for low-duty-cycle switching or non-critical loads where thermal margin is ample |
Compared with DMN3025LSD-13 and SI2303DS-T1-GE3, IRLL2703TRPBF delivers superior thermal capability (1.0W vs. ≤0.7W), higher avalanche energy (180mJ vs. ≤80mJ), and tighter VGS(th) distribution - making it preferred for industrial-grade 3.3V/5V-driven power stages requiring reliability and sustained current.
Availability
IRLL2703TRPBF is available at Aetrix Electronics and suitable for DC-DC converters, USB power switches, brushed motor drivers, and LED dimming circuits requiring stable component supply and long-term manufacturability.
Supply support for IRLL2703TRPBF 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 acquired International Rectifier in 2015 and continues to develop and manufacture its HEXFET® power MOSFET portfolio with focus on high-efficiency, rugged, and thermally optimized discrete solutions.
The IRLL2703TRPBF belongs to the fifth-generation HEXFET® family, designed specifically for space-constrained, logic-level-driven power switching applications in consumer, industrial, and automotive subsystems where thermal performance and avalanche robustness are essential.
FAQ
Is IRLL2703TRPBF compatible with 3.3V microcontroller GPIOs?
Yes. Its gate threshold voltage range (1.0–2.4V) ensures full enhancement at 3.3V, and RDS(on) drops to 0.060Ω at VGS = 5.0V - sufficient for most 3.3V logic-driven loads up to 3.1A continuous. No level-shifting circuitry is required.
What is the maximum PCB copper area needed to achieve 2.1W power dissipation?
To reach the 2.1W rating, a 1-inch square (25.4mm × 25.4mm) copper pour on the top layer, connected directly to the drain tab via multiple thermal vias to inner ground planes, is required. Standard FR-4 layouts without extended copper achieve only 1.0W.
Does IRLL2703TRPBF have a built-in ESD protection diode?
No. The device lacks integrated gate protection diodes. External 10kΩ series gate resistor and optional 12V Zener clamp between gate and source are recommended for systems exposed to >2kV HBM ESD events per IEC 61000-4-2.
Can IRLL2703TRPBF replace IRFL014 in existing designs?
Yes - both share identical SOT-223 footprint, pinout, and VDS = 30V rating. IRLL2703TRPBF improves RDS(on) (0.045Ω vs. 0.070Ω), reduces Qg (9.3nC vs. 12nC), and offers tighter VGS(th) tolerance - resulting in lower losses and faster switching without layout changes.
IRLL2703TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-261-4, TO-261AA
- 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:
- 3.9A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 4V, 10V
- Rds On (Max) @ Id, Vgs:
- 45mOhm @ 3.9A, 10V
- Vgs(th) (Max) @ Id:
- 2.4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 14 nC @ 5 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 530 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 1W (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
IRLL2703TRPBF FAQ
1.How can I place an order for IRLL2703TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for IRLL2703TRPBF 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 IRLL2703TRPBF reliable?
The price and inventory of IRLL2703TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRLL2703TRPBF is usually 5 days.
3.What payment methods are accepted for IRLL2703TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRLL2703TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRLL2703TRPBF?
IRLL2703TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRLL2703TRPBF 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 IRLL2703TRPBF?
For technical support, including IRLL2703TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRLL2703TRPBF requirements.
6.How does Aetrix verify that IRLL2703TRPBF is sourced from the original manufacturer or authorized distributors?
All IRLL2703TRPBF 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 IRLL2703TRPBF meets industry standards.
7.What is the process for return or replacement of IRLL2703TRPBF?
All IRLL2703TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRLL2703TRPBF, 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 IRLL2703TRPBF part is unused and in its original packaging.
Return procedure for IRLL2703TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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