Very Low Profile Tax Filters Attenuates 12 or 16 kHz signals to telco equipment by more than 25 dB. Schematic Diagram Uses standard-value capacitor for either 12 or 16 kHz resonance 1 Designed to provide 25 dB minimum attenuation at 12 or 16 kHz. 5 Electrical Specifications at 25O C Part Number Inductance (1) +5% (mH) D.C. Resistance Max. (Ω) D.C. Current Max. (mA) Hi-Pot Min. (VAC) F-3551 2.58 14.0 70 1250 12 kHz, Parallel L with C=68 nF F-3552 1.44 10.0 90 1250 16 kHz, Parallel L with C=68 nF F-3553 7.96 28.0 70 1250 12 kHz, Series L with C=22 nF F-3554 4.52 20.0 90 1250 16 kHz, Series L with C=22 nF Attenuates 12 or 16 kHz 1. Tested at 10KHz and 100 mVRMS Physical Dimensions inches (mm) } Optional use as Dual .079 (2.00) TYP. 6 7 8 9 10 .020 (0.50) TYP. Use of F-3551 inductor in a parallel LC configuration followed by a F-3553 in a series configuration to provide more than 40 dB attenuation of tax pulse signals 5 4 2 1 .660 (16.76) MAX. .768 (19.50) .027 (0.69) Use of F-3552 inductor in a parallel LC configuration followed by a F-3554 in a series configuration to provide more than 40 dB attenuation of tax pulse signals .172 (4.37) MAX. Terminal #1 Indicator Specifications subject to change without notice. Rhombus Industries Inc. .660 (16.76) MAX. For other values & Custom Designs, contact factory. 18 .053 (1.35) TAXFILTR - 10/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971 Tax Pulse Filter Inductor Materials used in the construction of this component meet or exceed UL Class B and can be operated up to 130oC Single Inductance Vary capacitor value for 12 KHz or 16 KHz Rhombus Part Number: F-3503 Electrical Specifications at 25O C Parameter Min. Typ. Max. Units Schematic Inductance (Pins 1-3) 6.19 6.52 6.84 mH 1 D.C. Resistance 10.5 12.05 13.6 Ω 70 mADC Current "12 KHz" Capacitor 25.0 27.0 28.0 nF "16 KHz" Capacitor 14.0 15.0 15.7 nF Single LC attenuation 25 dB Dual LC attenuation 40 dB 3 1. Tested at 10KHz and 100 mVRMS Table #1 Physical Dimensions in inches (mm) “Tax Pulse” Frequencies for various countries: Country Frequency Austria 12 kHz Belgium 16 kHz Switzerland 12 kHz Germany 16 kHz Denmark 12 kHz Spain 12 kHz France 12 kHz Great Britain 50 Hz* Greece 16 kHz Italy 12 kHz Ireland 12 kHz Israel 16 kHz Norway 16 kHz Netherlands 50 Hz* Portugal 12 kHz Sweden 12 kHz Finland 16 kHz Turkey 12 kHz Yugoslavia 16 kHz Australia 12 kHz Czechoslovakia 16 kHz .450 (11.43) MAX. .200 (5.08) .025 (0.64) TYP. .400 (10.16) .571 (14.50) MAX. 2 1 3 .551 (14.00) MAX. 6 5 4 *Common-mode (longitudinal) signal Specifications subject to change without notice. Rhombus Industries Inc. For other values & Custom Designs, contact factory. 19 TAXFILTR - 10/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971