Knowles Precision Devices' automotive-friendly MLCC capacitors

28 November 2018

Automotive is one of the strongest growing markets for electronic components worldwide. AEC-Q200-compliant components are consistently being designed into automotive systems: these include EV power train and battery management, infotainment, engine control, air bags, lighting and more...

The demand for ‘off-the-shelf', yet highly rugged devices is expanding fast, and in many cases outstripping supply. This is not the case at Knowles Precision Devices (KPD), where product development is not only keeping pace with automotive designers, but production capacity is being ramped up.

Under the Syfer brand, the AEC-Q200 series of MLCC capacitors has had a range extension, increasing the available working voltage from 2kV up to a maximum of 4kV. Designed for EV applications where ever higher voltages are needed, but where a margin for derating has to be accommodated for, the products prove ideal for power train use, like battery management and invertors.

Available in X7R dielectric, and with capacitance up to 22nF, this extension joins an already-comprehensive offering of Syfer AEC-Q200-qualified MLCC capacitors and complements the extensive AEC-Q200-qualified components that KPD offer.

For those automotive applications that require high-q, low-loss MLCCs, the Syfer-branded ‘X8G HighQ series now also has AEC-Q200 qualification. These low ESR HighQ parts are manufactured with a copper electrode for optimum performance at high frequencies and are rated to work over the temperature range -55ºC to +150ºC.

The capacitance range of 0.3pF to 100pF is covered, with rated voltages up to 500V. They will also find a home in many other applications such as networking and Wi-Fi, as well as use in safety systems (such as radar).

The AEC-Q200 tests recognise that demands placed on passive components in an automotive environment relate to a very high resistance to temperature and vibration and to protection against short-circuiting. Knowles Product Devices recognise that the automotive environment is a harsh one, so only makes components that are built to last.

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