IR IRFS7730

Mfr. Part

IRFS7730

Manufacturer

IR (International Rectifier, now part of Infineon Technologies). Y-IC is a quality distributor for the IR brand. We supply original parts and provide the best products and services to our customers.

Detailed Description

Specialized power semiconductor from IR’s IRFS family

N-channel enhancement-mode MOSFET for low-voltage, high-current switching

Focused on high efficiency, low heat, and fast switching in power conversion and load control

Catalog classification Specialized ICs under Integrated Circuits (ICs)

Key Features

Low on-resistance class to cut conduction losses

High continuous and pulsed drain current capability

Fast switching with low gate charge

Rugged design with avalanche energy capability

Broad operating temperature range for harsh environments

Standard MOSFET pinout (Gate, Drain, Source) with large thermal tab

Pb-free/RoHS-oriented materials in most lots (verify per lot on our website)

Key Advantages

Lower losses mean cooler operation and higher efficiency

Faster switching improves performance of DC-DC converters and motor drives

Robust construction raises reliability under surge and stress

Works with common gate-drive voltages used in industrial and automotive designs

Backed by IR/Infineon semiconductor quality and Y-IC’s trusted distribution and support

Packaging

Supply format: standard production packaging for SMT lines (Tape and Reel or Tray depending on variant). Current available stock 3000 units with date code 19+

Package / Case: IR case code 920, power SMD class with exposed thermal tab for heat spreading

Materials: copper leadframe, epoxy-molded body, tin-plated leads for strong solderability

Pin configuration: 3 functional pins (Gate, Drain, Source); exposed tab tied to Drain to improve thermal and electrical performance

Size: low-profile power package. Use the datasheet footprint for exact dimensions and land pattern

Thermal characteristics: low junction-to-case thermal resistance; large drain tab and PCB copper area provide efficient heat transfer

Electrical properties: N-channel enhancement-mode device; low RDS(on) class, high current capability, and low gate charge for fast switching. Confirm exact VDS, ID, RDS(on), Qg, and safe operating area in the datasheet before design-in

Lifecycle

Lifecycle status can vary by lot and region. The provided date code 19+ indicates production around 2019

IR devices are supported under Infineon Technologies. Many IRFS parts remain active, with replacements available if needed

Equivalent or alternative models to consider for similar 30–40 V, low RDS(on), N-channel power MOSFETs in a power SMD package:

- IR/Infineon: IRFS7430, IRFS7530, IRFS7740 (check voltage, RDS(on), and package)

- Infineon OptiMOS D2PAK/TO‑263 class: BSC series options in 30–40 V

- Vishay Siliconix: PowerPAK/D2PAK families such as SiR66xx, SQJQxxx (match ratings and footprint)

- onsemi: NTMFS/NVMFS 30–40 V power MOSFETs in D2PAK and similar packages

Always verify electrical ratings, pinout, footprint, and thermal specs against your design needs

If a true drop-in replacement is required or if lifecycle/availability is critical, contact our sales team via the Y-IC website for the latest status and vetted cross references

Key Application Areas

Synchronous rectification in buck, boost, and multiphase DC-DC converters

High-current load switching, hot-swap, and battery protection

Motor control stages for tools, e-bikes, drones, and robotics

Server, telecom, and industrial power supplies

Automotive 12 V systems, LED drivers, auxiliary power modules

Inverters and power management modules needing low loss and strong thermal performance

Datasheet

Y-IC provides the most authoritative and up-to-date datasheet for IRFS7730 on our product page

Download the datasheet now to get exact electrical limits, thermal data, footprint, and design guidance

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