Approval sheet BROADBAND RFCMF 1632(0612) Series RoHS Compliance MULTILAYER COMMON MODE FILTER For USB 2.0 / IEEE 1394 Application RFCMF1632140M2T series *Contents in this sheet are subject to change without prior notice Page 1 of 7 ASC RFCMF1632140M2T V08 May. 2010 Approval sheet FEATURES 1. Multilayer LTCC ( Low Temperature Cofired Ceramics ) Technology 2. Reflow solderable SMD Devices 3 3. Miniatured Size 1.6 x 3.2 x 1.4 mm 4. Low Differential Mode Insertion Loss maximum 0.8 dB 240MHz 5. High Common Mode attenuation minimum 9.0dB 140MHz ~ 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 1632 size Common Mode Filter and Schematics 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 1.6 x 3.2 x 1.4 mm future meet the SMT automation and miniaturization requirements on modern devices. DIMENSIONS Figure Symbol Dimension L 1.60 0.20 mm W 3.20 0.20 mm T 1.40 0.20 mm P 1.10 0.20 mm a 0.60 0.20 mm b 0.50 0.20 mm Page 2 of 7 ASC RFCMF1632140M2T V08 May. 2010