Metal-composite power choke coils withstand 30G vibration in automotive ECUs
The Panasonic Low Profile (LP) series of automotive power choke coils, with a metal composite core, provide high heat, vibration resistance and current stability in a compact surface-mount package for automotive applications.
The Panasonic LP series, part of the Panasonic ETQP range of power inductors, employs a metal composite construction which integrates the coil and the core into a single unit with a gapless structure, reducing audible buzz noise and providing a guaranteed vibration resistance of 30g. This eliminates the need for additional anti-vibration reinforcement or adhesives on the PCB. The power inductors are specially designed to be pin-to-pin compatible with products from many other suppliers, making an easy and cost-effective replacement.
The Panasonic LP series features a compact footprint ranging from 5.0mm x 5.5mm to 10.0mm x 10.7mm, along with a low profile. making it suitable for high-density mounting in space-constrained automotive applications such as electric power steering and battery management. An iron-based metal composite material ensures excellent inductance stability over a broad temperature range and when subject to high bias current.
The series offers an inductance range from 0.105µH to 22.0µH. The chokes are suitable for use in high-efficiency power circuits: dc resistance values are as low as 1.52mΩ. The 0.105µH variant offers a current rating of 22.7A.