IXTH40N50L2 - L2™ Series

Series: L2™
Questions? Contact Littelfuse Support
Littelfuse Power Semi TO-247 3 H 2Sq 1W2N 3L image
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Tailored specifically for applications requiring Power MOSFETs to operate in their current saturation regions, these unique devices feature low thermal resistances, high power density, and extended Forward Bias Safe Operating Areas (FBSOA).

When Power MOSFETs are utilized in linear-mode operation, as opposed to their conventional switch-mode one, they are required to endure substantially high thermal and electrical stresses due to the simultaneous occurrence of high drain voltages and currents; these extreme stresses can cause typical devices to fail. Littelfuse LinearL2™ Power MOSFETs have been designed to address these kinds of device failures – the FBSOAs are “extended” when the positive feedback of electro-thermal instability is suppressed, giving rise to larger “operating windows.” The FBSOAs are guaranteed at 75°C.


  • Designed for linear operation
  • Guaranteed FBSOA at 75°C
  • Low on-resistances RDS(on)
  • Avalanche rated
  • International standard packages
  • UL 94 V-0 Flammability qualified
    (molding epoxies)


  • E-fuses and hot-swap circuits
  • Battery management
  • Current regulators
  • Linear amplifiers
  • Fan controllers
  • Programmable loads
  • Soft-start control


To request product environmental information, please complete the Product Environmental Information Request Form.