Nexperia
Or cross multiple parts
×

ASFETs for PoE, eFuse and relay replacement

Enhanced SOA in a range of compact packages

Nexperia’s ASFETs for PoE, eFuse & relay replacement are designed with low-power applications in mind, including Power-over-Ethernet (PoE), low-power inrush management, eFuse and relay replacement. Using the same silicon technology as the bigger ‘ASFETs for hotswap’, these smaller ASFETs deliver enhanced SOA for low-power linear-mode applications in a range of compact DFN2020 (2 x 2 mm) and LFPAK33 (3.3 x 3.3 mm) packages.

ASFETs for PoE, eFuse & relay replacement have been specifically designed to complement the latest high-power, PSE controllers:

  • ASFETs primary role is to:
           - Safely manage capacitive inrush current when Powered Devices (PD’s) are connected to Power sourcing
             Equipment (PSE’s).
           - Provide current limit & shutdown to safely manage overload conditions & cable faults.
  • ASFETs for PoE combine industry leading enhanced Safe Operating Area (SOA) and low RDS(on).
  • ASFETs for PoE are available in LFPAK33 (3.3 x 3.3 mm) and space-saving DFN2020 (2 x 2 mm) package.
  • ASFETs deliver superior linear-mode capability, power density and thermal efficiency in a compact footprint.
  • Enabling designers to squeeze more high-power PoE ports into a compact router / switch.
  • Also suitable for eFuse & relay replacement where superior fault tolerance is required.
   
    

Power Sourcing Equipment / Power over Ethernet

 

Nexperia in action

PSMN075-100MSE, PSMN040-100MSE, PSMN4R8-100BSE MOSFETs referenced in Linear Technology's LTC4279 New PSE Controller datasheet are from our differentiated ASFETs for Hotswap and Soft Start / ASFETs for Power over Ethernet portfolios.

 

Featured products

Latest news and blogs

  • Blog article
Oct 19, 2020

Optimizing MOSFETs to fit specific applications
  • Blog article
Dec 11, 2018

Ratification of IEEE802.3bt powers new PSE/PD PoE ...

Latest videos

MOSFETs for Power over Ethernet PoE PSE Applications Nexperia Quick Learning

MOSFETs for Power over Ethernet PoE PSE Applications Nexperia ...
Benefits of DFN Packages
DFN Packages Explained - DFN Basics

Parametric search

ASFETs for PoE, eFuse and relay replacement
Please wait loading data...
Parametric search is unavailable.

Products

Type number Description Status Quick access
PSMN040-100MSE N-channel 100 V 36.6 mΩ standard level MOSFET in LFPAK33 designed specifically for high power PoE applications Production
PSMN041-100MSE N-channel 100 V, 42 mOhm standard level ASFET with enhanced SOA in DFN2020. Designed for high power PoE, inrush management, eFuse and relay replacement Development
PSMN047-100NSE N-channel 100 V, 53 mOhm standard level ASFET with enhanced SOA in DFN2020. Designed for high power PoE, inrush management, eFuse and relay replacement Production
PSMN071-100NSE N-channel 100 V, 82 mOhm standard level ASFET with enhanced SOA in DFN2020. Designed for high power PoE, inrush management, eFuse and relay replacement Qualification
PSMN072-100MSE N-channel 100 V, 77 mOhm standard level ASFET with enhanced SOA in DFN2020. Designed for high power PoE, inrush management, eFuse and relay replacement Development
PSMN075-100MSE N-channel 100 V 71 mΩ standard level MOSFET in LFPAK33 designed specifically for PoE applications Production
Visit our documentation center for all documentation

Application note (1)
File name Title Type Date
AN50006 Power MOSFETs in linear mode Application note 2022-04-12

Marcom graphics (1)
File name Title Type Date
RS2780_PoE_blue-scr POE MarCom image Marcom graphics 2020-09-16

Selection guide (1)
File name Title Type Date
Nexperia_Selection_guide_2023 Nexperia Selection Guide 2023 Selection guide 2023-05-10

If you have a support question, let us know. If you are in need of design support, let us know and fill in the answer form, well get back to you shortly.

Or contact us for further support.


Cross reference