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IRLR7843TRPBF
IRLR7843TRPBF
| Part Number | IRLR7843TRPBF |
|---|---|
| Manufacturer | Infineon Technologies (Formerly International Rectifier) |
| Category | Discrete Semiconductor Products > Transistors – FETs, MOSFETs – Single |
| Description | Advanced HEXFET N-Channel Power MOSFET optimized for low gate charge and logic-level drive requirements, featuring a 30V breakdown voltage, 161A continuous drain current, and ultra-low on-resistance, housed in a surface-mount D-Pak (TO-252AA) package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The IRLR7843TRPBF is Infineon’s HEXFET N-channel MOSFET for high-frequency synchronous buck DC-DC converters. Rated for 30V VDS and 161A silicon-limited drain current, it features ultra-low RDS(on) and optimized gate charge to cut switching & conduction losses. Supporting 4.5V logic-level drive, this TO-252 D-Pak tape-and-reel MOSFET is ideal for server, telecom and computing power supply systems.
Core Advantages
Optimized for Synchronous Buck Converters
Features an ultra-low total gate charge Qg and extremely low gate resistance Rg, yielding exceptionally fast switching transitions and reducing both switching and driving power losses.
Ultra-Low Conduction Losses
Maintains industry-leading low on-resistance limits RDS(on) down to 3.3 mΩ at 10V drive, drastically mitigating structural thermal dissipation and maximizing system efficiency under heavy load currents.
Logic-Level Control Compatibility
Fully optimized and characterized for 4.5V and 10V gate drive applications, permitting direct logic-level control from microcontrollers, PWM controller chips, and standard power management ICs.
Robust Thermal Performance in a Compact Package
The surface-mountable D-Pak (TO-252AA) package profile exhibits low junction-to-case thermal resistance RθJC, allowing the underlying PCB copper planes to serve as an effective thermal management framework.
Key Specifications
| Brand | Infineon Technologies / Formerly International Rectifier |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free (PBF) Matte Tin Plated Terminals |
| EDA/CAD Model | 3D Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | TO-252-3, DPak |
| Mounting Type | Surface Mount Technology (SMD/SMT) |
| Tape & Reel Format | TR suffix: Standard tape reel for automated pick-and-place assembly |
| Lead Finish | Matte Tin Lead-Free Plating |
| Surface Marking / Silkscreen | LR7843 Marking |
| FET Configuration Type | N-Channel MOSFET (Enhancement Mode) |
| Drain-to-Source Voltage VDS | 30 V Absolute Maximum Breakdown Threshold |
| Continuous Drain Current ID | 161 A (at TC = 25°C, Silicon Limited) / 113 A (at TC = 100°C) |
| Max Drain-Source On-Resistance RDS(on) | 3.3 mΩ (at VGS = 10V, ID=15A) / 4.3 mΩ (at VGS = 4.5V, ID=15A) |
| Gate-to-Source Voltage VGS | ±20 V Maximum Input Dynamic Envelope |
| Total Gate Charge Qg | 34 nC Typical / 50 nC Maximum (at VGS = 4.5V, VDS = 15V) |
| Input Capacitance Ciss | 4380 pF @ VDS = 15V |
| Thermal Resistance RθJC | 1.05 °C/W Low junction-to-case thermal impedance via exposed pad |
| Maximum Power Dissipation PD | 140 W (at TC = 25°C with optimal thermal pad layout) |
| Operating Junction Temperature Range | -55°C to +175°C (Extended Performance Thermodynamic Stability Window) |
Typical Applications
- High-Frequency Synchronous Buck Converters for Server and Desktop Computer CPUs
- Point-of-Load (POL) Modules, Telecom Bricks, and Distributed Power Architecture Blocks
- High-Side and Low-Side Switches in Synchronous Rectification Power Stages
- Motor Control Arrays for Cordless Power Tools and Lightweight Industrial BLDC Drives
- Battery Protection Networks, OR-ing FET Switches, and Advanced Smart Load Controls
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available stock of the IRLR7843TRPBF 100% genuine and original factory stock?
A: Yes, we guarantee that all IRLR7843TRPBF components in our warehouse are 100% brand-new, factory-original products directly from Infineon Technologies. Every batch is rigorously monitored under standard anti-static ESD safety guidelines and shipped inside protective factory-sealed reel packaging.
Q2: What do the letters “L”, “TR”, and “PBF” represent in this part number?
A: The “L” indicates that this is a logic-level gate drive optimized MOSFET, meaning it achieves ultra-low RDS(on) at lower gate voltages such as 4.5V. The “TR” designation confirms that the component is supplied on standard Tape and Reel carrier format for automated assembly machinery, and the “PBF” suffix verifies full RoHS lead-free environmental compliance.
Q3: Why does the datasheet show a 161A current limit, but standard D-Pak packages are limited to lower values?
A: The 161A rating represents the calculated theoretical silicon die performance capability under ideal cooling conditions. In practice, the physical dimensions of the standard D-Pak (TO-252AA) copper lead frame and internal wire bonds restrict continuous safe package current conduction to lower levels. Designers should refer to the package-limited continuous current section for layout boundaries.
Q4: How can our engineering development team obtain mechanical STEP files, spice models, or bulk volume pricing schedules?
A: Please complete our Quick Inquiry web form on this page with details about your processing parameters. Our application support desk will process your inquiry and dispatch the available technical documentation package within 24 hours.
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