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| CORCOM Product Guide Surface Mountable RFI Filters BLF Series BLF UL Recognized Specifications Capacitors: Type Standard Value: BLF820 BLF082 Standard Tolerance: Ferrites: Type: Inductance: Housing Material: High resistivity, nickel zinc ceramic 2 H Glass-filled polyester (UL94V-0) 1000 VAC for 60 seconds Monolithic ceramic chip 820pF 82pF +/-20% BLF Series Tyco Electronics introduces a new line of surface mountable RFI filters specifically designed to eliminate noise on the signal line. These board level filters attenuate noise on the signal line at the frequency range of 10 MHz to 1000 MHz with maximum attenuation at 40 MHz to 400 MHz. The U shaped ferrite features a parallel first and second leg with a center leg surrounded by a grounding/shorting strap and a capacitor for each line. This unique design optimizes the filter performance by combining the elements into one low profile single piece filter. Each filter acts on two signal lines, but can be stacked as an array to allow performance over multiple lines. The BLF filter can withstand dielectric voltage of 1000 VAC for 60 seconds, thereby allowing placement of this filter at the optimal location, immediately behind the connector. This placement allows immunity protection from signal line interference as well as significant reduction of RFI emissions. The filter can be used in conjunction with unfiltered RJ jacks, ganged jacks, or with filtered modular jacks for additional protection. Dielectric Withstanding Voltage: Line-to-line and line-to-ground Ratings: 2.2 Amps max. 56.6 Volts max. Pass Band Minimum insertion loss in dB: Differential mode in a 50 ohm circuit at 1 MHz <1dB at 5MHz < 6dB Stop Band Minimum insertion loss in dB: Common mode in a 50 ohm circuit Model 20 4 20 40 10 30 Frequency-MHz 70 100 150 300 16 20 40 50 25 40 40 31 500 700 1000 26 25 23 22 20 13 Dimensions .25 Max. 6.35 .450 Max. 11.43 BLF082 BLF820 .375 Max. 9.53 Electrical Schematic .100 2.54 Max. Recommended Pad Layout .265 6.73 .100 2.54 LINE LOAD Gnd Pad .150 3.81 Part Numbers .120 3.05 BLF820 BLF082 .047 1.19 (4 places) .047 1.19 (2 places) .050 1.27 174 Catalog 1654001 Revised 05-07 Dimensions are in inches and millimeters unless otherwise specified. Values in italics are metric equivalents. Dimensions are shown for reference purposes only. Specifications subject to change. USA Cust. Svc.: 1-800-468-2023 CORCOM Prods: 1-847-680-7400 Germany: 49-89-6089-0 www.corcom.com www.tycoelectronics.com |
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