Vishay Intertechnology has announced an expansion of its ILHB range of automotive-grade multilayer chip ferrite beads designed for high-current filtering applications. The updated Vishay Dale components now deliver improved performance with higher current ratings, more compact package options, and a broader selection of impedance values to better address electromagnetic compatibility (EMC) noise suppression needs.
The enhanced ILHB series is offered in multiple case sizes, including 0402, 0603, 0805, 1008, and 1206. These components support current levels of up to 6 A and provide impedance values ranging from 10 Ω to 2700 Ω. With this expanded portfolio, engineers can now achieve greater current capacity in smaller footprints, with some configurations offering two to three times higher current handling compared to earlier versions with the same package size and impedance.
This expanded range of sizes, current handling, and impedance values allows the ILHB ferrite beads to be used in a wider array of EMC noise reduction applications. These include high current, high frequency, and signal-specific filtering in automotive energy distribution and management systems; industrial automation systems; home and building controls; computers and computer peripherals; consumer devices; white goods; medical instrumentation; avionics; and telecom infrastructure.
To simplify device selection, the ILHB product datasheets have also been enhanced with additional design parameters that help engineers estimate bead performance across more frequencies without consulting multiple performance graphs. These parameters include impedance peak value and frequency, the frequency at which impedance drops below the nominal value, and the X- and R-frequency crossover point.
The AEC-Q200 qualified devices feature a silver (Ag) inner conductor with copper (Cu), nickel (Ni), and tin (Sn) plating. The ferrite beads operate over a temperature range from -55 °C to +125 °C and are RoHS-compliant, halogen-free, and Vishay Green.
Device Specification Table:
| Part number | IHLB-0402 | IHLB-0603 | IHLB-0805 | IHLB-1008 | IHLB-1206 |
| Case size | 0402 | 0603 | 0805 | 1008 | 1206 |
| Dimensions (mm) | 1.0 x 0.5 x 0.5 | 1.6 x 0.8 x 0.8 | 2.0 x 1.2 x 0.85 | 2.5 x 2.0 | 3.2 x 1.6 |
| Z at 100 MHz (Ω) | 10 to 1800 | 22 to 2500 | 17 to 2700 | 300 to 600 | 19 to 1000 |
| DCR max. (mΩ) | 18 to 2400 | 7 to 1800 | 10 to 800 | 30 | 10 to 300 |
| Rated DC current at 85 °C (1) (A) | 0.05 to 3.1 | 0.05 to 6 | 0.2 to 6 | 4 | 0.5 to 6 |
| Zpk (2) (Ω) | 19 to 3738 | 28 to 2526 | 21.6 to 31 868 | 554 to 670 | 32.68 to 1167 |
| F at Zpk (3) (MHz) | 97 to 1329 | 78 to 1000 | 72 to 1132 | 122 to 155 | 61 to 2921 |
| Z typ. at 100 MHz (Ω) | 10 to 2038 | 22 to 2200 | 17 to 2713 | 309 to 517 | 17.2 to 1000 |
| F at ZDO (4) (MHz) | 125 to > 10 000 | 100 to 8000 | 84 to 8000 | 138 to 222 | 100 to > 10 000 |
| XL / XR x over (5) (MHz) | 31 to 710 | 26 to 439 | 23 to 298 | 100 to 117 | 25 to 120 |
(1) Rated current is the DC current that causes a 40 °C temperature rise at 20 °C ambient
(2) Zpk = peak of impedance curve
(3) F at Zpk = frequency of Zpk
(4) F at ZDO = frequency above 100 MHz where Z drops to nominal Z
(5) XL / XR x over = crossover point for inductive reactance and resistance impedance
Samples and production quantities of the ILHB ferrite beads are available now, with lead times of 8 to 10 weeks.
