800V small inductors are automotive

With rising automotive battery voltages, Coilcraft has identified a need for PCB-mount inductors to handle the full potential difference, and responded with an 800V rated family of physically-small unshielded through-hole ferrite drum parts.

Qualified to AEC-Q200 Grade 3 (-40 to +85°C) and called the RFC0807BV series, they are 8.8mm in diameter, 7.5mm tall and have radial lead length options between 3.6 and 25mm.

The inductors are "ideal for high-voltage and high-current battery management systems, as well as universal non-isolated off-line ac-dc power supplies for industrial and automotive applications", according to the company.

The high voltage rating comes from a change in wire insulation compared with the similar RFC0807B family.

19 inductance values are available, from 39μH at 25°C (240mΩ max, 1Arms for 20°C rise, 11MHz self-resonant) to 1.2mH (4.1Ω, 250mArms, 1.7MHz). See below for the complete list.

Potential non-automotive applications include, said Coilcraft: grid infrastructure, smart meters, power monitors, residential circuit breakers, building automation, and home appliances.

*self-resonant frequency