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IRF540
100 V n-channel power MOSFET for switching applications
Specifications
Key details
| Part Number | IRF540 |
|---|---|
| Manufacturer | Infineon Technologies |
| Category | N-Channel MOSFET |
| Lifecycle Status | Obsolete |
| Series | HEXFET / StrongIRFET |
| Package / Case | 3-lead TO-220 |
| Pin Count | 3 |
| Operating Temperature | -55°C to +150°C junction |
| Last Verified | 2026-07-22 |
Overview
Part information
IRF540 Overview
IRF540 is a Infineon Technologies 100 V n-channel power MOSFET for switching applications supplied in 3-lead TO-220. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Drain-Source Voltage | 100 V |
|---|---|
| Polarity | N-channel |
| Continuous Drain Current | 28 A class |
| Maximum RDS(on) | 77 mΩ class |
| Technology | Silicon power MOSFET |
Package and Ordering Notes
The listed package is 3-lead TO-220 with 3 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.
Sourcing Guidance
IRF540 is obsolete or discontinued. Require traceability, date-code, package-marking and storage-condition checks for remaining stock.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against Infineon Technologies documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
IRF540 FAQ
What is IRF540?
IRF540 is a Infineon Technologies 100 V n-channel power MOSFET for switching applications. It belongs to the HEXFET / StrongIRFET series.
What are the key specifications of IRF540?
Drain-Source Voltage is 100 V, and Polarity is N-channel. Use the linked manufacturer datasheet for limits, test conditions and revision-controlled values.
What package does IRF540 use?
IRF540 is supplied in 3-lead TO-220 with 3 pins, leads, lands or contacts. Verify the exact footprint and ordering suffix before PCB release.
Is IRF540 still in production?
IRF540 is obsolete or discontinued. Any remaining stock should be checked for traceability, date code, package marking and storage history.
What should be checked before sourcing IRF540?
Confirm the complete MPN, electrical ratings, package, temperature grade and required quantity. Possible alternatives include IRF540NPBF or a current 100 V MOSFET after verifying gate drive and SOA, but compatibility must be verified independently.
Sourcing notes
Lifecycle and sourcing review
Obsolete
This part has a legacy lifecycle status. Submit the exact MPN, quantity, delivery destination and date-code requirements for a sourcing review.
IRF540 is obsolete or discontinued. Require traceability, date-code, package-marking and storage-condition checks for remaining stock.
Alternatives
Potential alternative part numbers
Verify package, pinout, voltage, firmware behavior and qualification before substitution.