RFCMF1220100M3T Walsin

Approval sheet BROADBAND RFCMF 1220(0508) Series RoHS Compliance MULTILAYER COMMON MODE FILTER For USB 2.0 / IEEE 1394 Application RFCMF1220100M3T series *Contents in this sheet are subject to change without prior notice Page 1 of 7 ASC RFCMF1220100M3T V10 Jun. 2010 Approval sheet FEATURES 1. Multilayer LTCC ( Low Temperature Cofired Ceramics ) Technology 2. Reflow solderable SMD Devices 3 3. Miniatured Size 1.2 x 2.0 x 1.0 mm 4. Low Differential Mode Insertion Loss maximum 0.6dB 240MHz 5. High Common Mode attenuation minimum 9.0dB 240MHz ~ 1.0GHz 6. Special 3D layout design to minimize phase shifting APPLICATIONS 1. USB 2.0/ IEEE 1394 high speed data transmission 2. PC related, DSC, Scanner, Data Storage Devices, CD ROM R/W, Printer CONSTRUCTION and Schematic Fig 1. Outline of 1220 size Common Mode Filter and Schematics (No polarity) DESCRIPTION Walsin Technology Corporation develops a new ceramic Common Mode Filter specified for the EMI suppression on USB 2.0/ IEEE 1394 high speed data transmission, as shown in fig-1. The new specification, USB 2.0 released in April 2000, describes a high-speed of 480 Mbps. The major goal is to replace most of the traditional ports on a PC with one versatile and user-friendly interface. IEEE-1394 has a bus speed of 400 Mbps, and IEEE-1394b proposes to increase this rate to 3.2 Gbps. Under such a high speed, to suppress the serious EMI is a key issue for developer. The Common Mode Filter offered by Walsin Technology Corporation has been designed to a high suppression on Common Mode Noise as well as low insertion loss characteristics on Differential Mode Signal through Walsins advanced LTCC (Low Temperature Co-fired Ceramic) technology and superior product design via 3D EM Simulation Skill. 3 This Common Mode Filter has a rectangular ceramic body with a tiny dimension of 1.2 x 2.0 x 1.0 mm future meet the SMT automation and miniaturization requirements on modern devices. DIMENSIONS Figure Symbol Dimension WW L 1.20 + 0.40/ -0.20 mm 2.00 + 0.40/ -0.20 mm W aa PP 1.00 0.20 mm T LL bb P 0.80 0.10 mm a 0.45 0.20 mm TT b 0.40 0.20 mm Remark: For L direction , pad gap min : 0.5 mm For W direction , pad gap min : 0.2 mm There is no polarity at Walsins Common Mode Filter Page 2 of 7 ASC RFCMF1220100M3T V10 Jun. 2010