Multilayer choke inductors for vehicle-mounted power circuits withstands 150°C

  • Inductors


Murata Manufacturing Co., Ltd. (“Murata” below) has launched the multilayer type inductor “LQM18DH_70” Series as a low frequency noise suppression component for vehicle-mounted power circuits. Mass production of this product has begun.

In recent years, automobile electrification has evolved following the progress of automated driving such as ADAS*1, and various electronic devices such as vehicle-mounted cameras, radars, LiDAR*2, and ECU*3 have been equipped on automobiles. However, since components are often confined to a limited space, they are required to be miniaturized and must be able to withstand high temperatures.

To operate electronic devices properly, it is required that power is supplied stably to each function. To provide stable power supply, it is required to avoid low frequency noise that result from DC-DC converters from entering the signal line, and high inductance inductor components are required to suppress noise.

Responding to these application requirements, Murata has designed this product as a low frequency noise suppression component which is a smaller model compared to conventional models at a size of 0603 inch (1608 mm), and is capable of withstanding high temperatures (150°C) with a high inductance (6.8 - 47 uH).
By combining this product with our chip ferrite bead “BLM series,” which is optimal for high frequency noise suppression, it is capable of eliminating a broader range of noise.

Product characteristics

  • Compact: 0603 inch size
  • High temperature resistant: Maximum use temperature 150°C, for power train
  • Extensive product lineup of high inductance value types: 0.68 uH - 47 uH

Detailed product information

Refer to LQM18DH 70 Series for details.

Product lineup

LQM18DZ 70 Series : Supports up to a maximum use temperature of 125°C, for infotainment

Design support tool


  • *1ADAS (Advanced Driving Assistance System): Advanced driving assistance system.
  • *2LiDAR (Light Detection and Ranging): A system that detects obstacles around the vehicle by emitting lasers.
  • *3ECU (Electronic Control Unit): A electronic control unit of the automobile.

Murata in Brief

Murata Manufacturing Co., Ltd. is a worldwide leader in the design, manufacture and sale of ceramic-based passive electronic components & solutions, communication modules and power supply modules. Murata is committed to the development of advanced electronic materials and leading edge, multi-functional, high-density modules. The company has employees and manufacturing facilities throughout the world. For more information, visit Murata's website at