IRLR8256PBF Infineon MOSFET (N-Channel) (Other) In Stock
Infineon IRLR8256PBF is a 25V N-channel power MOSFET with 81A continuous drain current and ultra-low 5.7mΩ on-resistance in a TO-252AA (DPAK) package. It includes an integrated body diode and 86mJ avalanche energy rating for robust unclamped inductive switching. Suited for synchronous buck converters, motor drives, and high-current load switching in automotive and industrial power systems.
- Manufacturer
- Infineon
- Package
- Other
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- IRLR8256PBF Datasheet PDF
- Category
- MOSFET (N-Channel)
- Temp Range
- ?°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5.7mΩ maximum RDS(on) at 81A continuous drain current minimizes conduction losses in high-current synchronous rectifier stages
- 25V drain-source breakdown voltage with 86mJ avalanche energy rating provides robust protection against inductive switching transients
- Integrated body diode enables synchronous rectification without an external Schottky diode, reducing component count and BOM cost
- TO-252AA (DPAK) surface-mount package with drain-connected tab enables efficient PCB heat spreading without an external heatsink
- RoHS-compliant (PBF) construction meets global environmental directives for automotive and industrial product certification
Applications
The IRLR8256PBF is optimized for synchronous buck converter low-side switch positions in 12V automotive power modules, where its 5.7mΩ RDS(on) and 81A rating minimize resistive losses at switching currents above 30A. DC motor drive H-bridge stages in power tools, automotive seat and window actuators, and industrial conveyor drives also benefit from its high avalanche energy rating and fast body diode recovery. Battery management systems (BMS) for 12V–24V lithium-ion packs use it as the main charge/discharge switch to handle peak pulse currents without thermal runaway.
Specifications
| Factory Lead Time | 4Weeks |
| YTEOL | 0 |
| Avalanche Energy Rating (Eas) | 86mJ |
| Case Connection | DRAIN |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 25V |
| Drain Current-Max (ID) | 81A |
| Drain-source On Resistance-Max | 0.0057Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JEDEC-95 Code | TO-252AA |
| JESD-30 Code | R-PSSO-G2 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 63W |
| Pulsed Drain Current-Max (IDM) | 325A |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Terminal Finish | MATTE TIN OVER NICKEL |
| Terminal Form | GULL WING |
| Terminal Position | SINGLE |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for IRLR8256PBF:
suggested
suggested
Frequently Asked Questions
What is the RDS(on) and continuous drain current rating of the IRLR8256PBF?
The IRLR8256PBF has a maximum drain-source on-resistance (RDS(on)) of 5.7mΩ at a continuous drain current rating of 81A. This ultra-low on-resistance makes it one of the lowest conduction-loss 25V N-channel MOSFETs available in the DPAK package, ideal for high-current synchronous rectifier and load switch applications.
How does the 86mJ avalanche energy rating of the IRLR8256PBF protect motor drive circuits?
When an H-bridge switches off an inductive motor load, the collapsing field generates voltage spikes that can exceed the 25V drain-source breakdown. The IRLR8256PBF can absorb 86mJ of unclamped inductive switching (UIS) energy per event, protecting against single-pulse flyback transients at currents up to 40A without requiring an external TVS or Zener clamp on most motor loads below 100mH.
What switching frequency is the IRLR8256PBF suitable for in a 12V synchronous buck converter?
The IRLR8256PBF is suitable for synchronous buck converters operating at switching frequencies from 100 kHz to 400 kHz in 12V-input, 5V-output designs. Above 500 kHz, gate charge losses (Qg approximately 50nC) begin to dominate efficiency, so a lower RDS(on) device with smaller gate charge would be preferred for frequencies above 1 MHz.
Can the IRLR8256PBF be driven directly from a 3.3V logic-level gate signal?
The IRLR8256PBF achieves its specified 5.7mΩ RDS(on) at a gate voltage (VGS) of 10V. At 3.3V VGS the on-resistance rises to approximately 25–40mΩ, significantly increasing conduction losses at currents above 20A. A gate driver capable of delivering at least 4.5V to 10V drive is recommended to fully enhance the MOSFET and exploit its low RDS(on) in synchronous rectifier applications.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About Infineon
Infineon is a leading electronic component manufacturer. FindMyChip sources Infineon ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”