Malvern, Pa. - Two lead-free surface-mount, common-mode choke circuits from Vishay Intertechnology Inc. are said to feature lower dc resistance (DCR), higher current-handling capability and greater stability than multilayer common-mode choke circuits, thanks to a wirewound design.
The company's ICM-0805 and ICM-1206 provide noise suppression in Universal Serial Bus 2.0, IEEE 1394, low-voltage differential signaling and other high-speed digital interfaces used in digital cameras and scanners.
Key specs for the ICM-0805, which measures 2 x 1.2 x 1.2 mm, include a maximum DCR from 0.2 ohm up to 0.45 ohms at rated currents from 450 to 280 milliamps, and a common-mode impedance ranging from 30 to 370 ohms at 100 MHz.
The ICM-1206, measuring 3.2 x 1.6 x 1.9 mm, offers a maximum DCR of 0.3 to 1.2 ohms with rated currents ranging from 370 to 200 mA, and a common-mode impedance from 90 to 2,200 ohms. Both devices have a rated voltage of 50 V, a withstanding voltage of 125 V and insulation resistance of 10 megohms.
Their operating temperature range is -40 degrees C to 85 degrees C. Prices (for U.S. delivery only) range from 23 to 27 cents in large-order quantities. Delivery takes six to eight weeks.
Call (605) 665-9301