Stackpole Electronics Intros CB Series Chip Inductors

Stackpole Electronics Inc. (SEI, Raleigh, NC) introduced a broad offering of multi-layer, ferrite bead chip inductors for general-use, high-current, and high-speed signal applications, the CB Series, which have impedance ranges from 6 Ω to 2,700 Ω (at tolerances of ±20 percent and ±25 percent), with rated currents of 50 mA to 6 A, and dc resistances of 0.02 Ω to 1.2 Ω. Typical applications include graphics cards, field-programmable logic, voltage regulation modules, point-of-load converters, and dc-dc converters in laptop, notebook, and tablet personal computers.

The CB Series chip ferrite beads function as a resistor or attenuator at high frequencies. Lower frequencies that are desired are allowed to pass where higher frequencies are blocked and the energy released as heat. The CB Series devices are frequently used for EMI and RF suppression, power supply filtering, and isolation for logic devices. Typically, the beads are effective in applications across a wide frequency range from 1 MHz to several hundred megahertz.

The CB Series inductors are offered in 0402 to 1812 case sizes and are supplied on 1,000-piece to 10,000-piece reels for high-volume, pick-and-place manufacturing environments. The nickel barrier terminations provide solder heat resistance even when using high-temperature, lead-free solder processes. The CB Series is RoHS-compliant with lead-free, 100-percent matte tin terminations. Pricing for the CB Series is $0.05 each, in volume quantities. Lead times are from stock to six weeks.