IRFL4315TRPBF International Rectifier MOSFET (N-Channel) (SOT223 (3-Pin)) In Stock
International Rectifier IRFL4315TRPBF is an N-channel MOSFET in a 4-pin SOT-223 package rated 150 V and 2.6 A with 0.185 Ω on-resistance, built-in drain diode, and 38 mJ avalanche energy rating for reliable switching power applications.
- Manufacturer
- International Rectifier
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- IRFL4315TRPBF Datasheet PDF
- Category
- MOSFET (N-Channel)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 150 V drain-source breakdown voltage with 2.6 A continuous drain current rating for medium-power switching applications
- Low 0.185 Ω drain-source on-resistance minimizing conduction losses in DC-DC converters and motor drive circuits
- Built-in drain diode configuration with 38 mJ avalanche energy rating providing inherent protection against inductive switching transients
- 4-pin SOT-223 (TO-261AA) package with tab connected to drain enabling efficient thermal dissipation to the PCB copper pour
Applications
The IRFL4315TRPBF is used in switching power supplies, DC-DC converters, and motor control circuits operating at voltages up to 150 V and currents up to 2.6 A. Its built-in drain diode and 38 mJ avalanche energy rating make it well suited for inductive load switching applications such as solenoid drivers, relay coil drivers, and PWM-controlled motor drives. The SOT-223 surface-mount package facilitates thermal management through the PCB copper pour, supporting compact power stage designs.
Specifications
| Factory Lead Time | 18Weeks |
| YTEOL | 5.97 |
| Avalanche Energy Rating (Eas) | 38mJ |
| Case Connection | DRAIN |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 150V |
| Drain Current-Max (ID) | 2.6A |
| Drain-source On Resistance-Max | 0.185Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JEDEC-95 Code | TO-261AA |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 2.8W |
| Pulsed Drain Current-Max (IDM) | 21A |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the key voltage and current ratings of the IRFL4315TRPBF for switching circuit design?
The IRFL4315TRPBF is rated for a drain-source breakdown voltage of 150 V minimum and a maximum continuous drain current of 2.6 A. These ratings make it suitable for medium-power switching stages in DC-DC converters, relay drivers, and PWM power circuits operating from 12 V to 100 V bus rails with moderate current demands.
How does the 0.185 Ω on-resistance of IRFL4315TRPBF affect efficiency in a DC-DC converter?
The 0.185 Ω maximum drain-source on-resistance of the IRFL4315TRPBF results in a conduction power loss of approximately 0.49 W at full 2.6 A drain current during on-state. In a 24 V to 5 V DC-DC converter switching at hundreds of kHz, this on-resistance is low enough to maintain converter efficiency above 90% at moderate loads, minimizing thermal management requirements for the SOT-223 package.
What protection does the built-in diode and 38 mJ avalanche energy rating provide in inductive switching applications?
The built-in drain diode in IRFL4315TRPBF provides a freewheeling path for inductive kickback current when switching inductive loads such as solenoids, relays, and motor windings at up to 150 V. Additionally, the 38 mJ avalanche energy rating ensures the device can safely absorb inductive energy spikes during unclamped inductive switching events, protecting the circuit without requiring an external snubber in many designs.
For a compact motor solenoid driver PCB, how does the SOT-223 package of IRFL4315TRPBF assist with thermal management?
The 4-pin SOT-223 (TO-261AA) package of the IRFL4315TRPBF features a large tab pad connected directly to the drain, which can be soldered to a PCB copper pour or thermal pad to conduct heat away from the junction. For a solenoid driver switching 2.6 A at 48 V, this tab-drain connection provides a thermal resistance path to the board significantly lower than other small SMT packages, enabling higher continuous power dissipation without an external heatsink.
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About International Rectifier
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