TRF-2000L

Document 152 Tip and Ring Common Mode Filters These economical filters are designed to help telecommunications equipment engineers meet FCC and CCITT requirements. Available in 1 or 2 line (2 or 4 wire) versions, Coilcraft tip and ring filters provide >15 dB attenuation of common mode noise over the 3 Hz to 300 MHz frequency range. Part number: Minimum inductance: Rated current: DC resistance: Dielectric strength1: TRF 2000L (1-line) TRF 4000L (2-line) 20 µH 500 mA 0.065 Ohms max 1500 Vrms min 1. For TRF 2000, dielectric strength measured from pins 1,8 to 4,5. For TRF 4000, dielectric strength measured from pins 1,2,7,8 to pins 3,4,5,6. 2. Operating temperature range –40°C to +85°C. 3. Electrical specifications at 25°C. TRF 2000L Typical Response* 0 Differential Mode TRF 4000L C C B B Attenuation (dB) 10 20 Common mode D D 0.030 dia 0,76 8 5 0.030 dia 0,76 8 7 6 5 30 A 40 0.1 1 10 100 1000 1 2 4 A Frequency (MHz) 1 2 3 4 *measured on HP 8753D network analyzer Terminations: 8 Recommended Board Layout 5 Tin-silver over tin Recommended Board Layout 8 5 TRF 2000 8 5 TRF 4000 8 7 6 5 0.040 1,02 (5×) 1 4 E 0.040 1,02 (8×) E 1 4 F G F 1 4 1 2 3 4 A max 0.425 10,80 B max 0.550 13,97 C max 0.475 12,07 D 0.115 2,92 E 0.300 7,62 F 0.100 2,54 G 0.300 7,62 Specifications subject to change without notice. Please check our website for latest information. Document 152 Revised 05/27/05 © Coilcraft, Inc. 2010