Sumida expands its AEC-Q200 qualified surface mounted diode (SMD) inductor portfolio with the introduction of the CDEP13D**/T150 line. Consisting of 10 standard types and 10 high-power types, the new devices offer a combination of four key benefits, when compared to many other inductors. These are high temperature, high current, high-insulation voltage and magnetic shielding.
Inductance values range from 0.8 to 22 µH, with saturation current of up to 32 amps. Measuring 13.5 x 13.5 x 10 mm, the new products are an outgrowth of the CDEP15D**/T150 line, which measures 2 mm larger and offers saturation current of up to 50.4 µH. For durability, core and windings can withstand a voltage of up to 120 V DC.
Source: SumidaFull operating temperature range is -40° C to 150° C (including the coil’s self-temperature rise) and both product families are qualified to the Automotive AEC-Q200 reliability test requirements. The 150° C temperature satisfies most under-hood automotive application requirements, while the manganese-zinc ferrite core has high magnetic permeability and low power losses at the higher switching frequencies now found in automotive power circuits. High-frequency performance is further enhanced by the application of flat coil windings, which counteract “skin-effect,” and lower DC resistance. Flat-coil windings are also much more space-efficient than round-wire coils, helping to significantly reduce device size.
The part geometry provides very effective magnetic shielding, which is of growing importance because of the push toward smaller, more densely-packed automotive circuits. Unchecked, radiated electromagnetic interference/radio frequency interference can also affect the operation of other circuits nearby.
Popular automotive applications for these inductors include: LED headlight driver modules, adaptive driving beam, adaptive LED boards, daylight running light systems, pulse width dimming circuits, adaptive front-lighting systems, hybrid engine controls, powertrain control modules or any high-reliability application that must tolerate a wide temperature range.
