Littelfuse Announces 800 V N-Channel Depletion Mode MOSFET In Modified SOT-223-2L Package

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Littelfuse, Inc., an industrial technology manufacturing company empowering a sustainable, connected, and safer world, is pleased to announce the launch of CPC3981Z, an 800 V, 100 mA, 45 Ohm, Small Power N-Channel Depletion Mode MOSFET.

Compared to a standard SOT-223 package, this new product’s SOT-223-2L package features a removed middle pin. That increases the drain-gate pin spacing from 1.386 millimeters to more than 4 millimeters. The extended creepage distance is beneficial in higher voltage applications such as switch mode power supplies (SMPS) or power factor correction (PFC) startup circuits because designers can avoid the need for costly conformal coating or potting.

The key differentiator of the CPC3981Z is its modified SOT-223-2L package which enables
designers to meet the required extended creepage distance for higher voltage applications with a small discrete device. With its larger creepage distance, the CPC3981Z increases circuit robustness and enables cost savings. The 800 V blocking voltage rating of the CPC3981Z makes it the ideal choice for use in industrial, energy, telecommunications, and LED lighting applications, including:

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  • Normally ON switches,
  • Power supplies,
  • Startup circuits,
  • Solid-state relays,
  • Current regulators, and
  • Constant current sources.

The increased distance between the depletion mode MOSFET pins simplifies the isolation
management of wide input voltage power supplies and enables compact printed circuit board layouts.

“Littelfuse is proud to offer one of the broadest portfolios of depletion-mode MOSFETs in the industry, and the CPC3981Z further strengthens our position,” said Mark P. Smith, Director of Product Management, Integrated Circuits & MCU at Littelfuse. “This new addition to our low-cost depletion mode MOSFET family, with its new SOT-223-2L package, is an excellent solution for applications that require wide input voltage ranges up to 800 V.”


 

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