Ring Type Toroidal Cores with Case [RoHS [RoHS Compliant] Compliant] Dimensions (mm) Model ESD-R-12D ESD-R-19 ESD-R-19D ESD-R-25 ESD-R-25D ESD-R-38 ESD-R-38C-1 ESD-R-47 ESD-R-47D-1 ESD-R-57 ESD-R-57D-1 Frequency range OD ID T 12.9 19.0 19.0 26.0 26.0 39.0 39.0 48.0 48.0 61.0 61.0 6.0 9.0 9.0 14.0 14.0 17.5 17.5 25.5 25.5 32.4 32.4 6.4 11.0 11.0 15.0 15.0 14.0 14.0 16.0 16.0 24.0 24.0 up to 100MHz (mainly AM band range) up to 300MHz (mainly FM band range) Remarks Color of case with tape(black) with tape(black) with tape(black) Above frequency range is a reference only. Please test with actual device before use. Compatible toroidal core (bare type) black white black white black white white white white white white ESD-R-12S ESD-R-19S ESD-R-19SD ESD-R-25S ESD-R-25SD ESD-R-38D - - - - - Flame resistant grade of the case : UL94V-2 Shape and Dimensions ID ESD-R Series OD T Impedance vs. Frequency ESD-R-12D ESD-R-19 10000 1000 Impedance () Impedance () 10000 3T 100 2T 1T 10 1 1000 3T 100 2T 1T 10 1 1 10 100 Frequency (MHz) 1000 1 10 100 1000 Frequency (MHz) EMI Core VOL.07 All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data. Please request for a specification sheet for detailed product data prior to the purchase. Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 2008.03.06 P0911MCEC10VOL07E Ring Type Impedance vs. Frequency ESD-R-19D ESD-R-25 10000 1000 Impedance () Impedance () 10000 3T 2T 100 1T 10 1 1000 3T 100 2T 10 1T 1 1 10 100 1000 1 Frequency (MHz) ESD-R-25D ESD-R-38 1000 Impedance () Impedance () 1000 10000 3T 100 2T 1T 10 1000 3T 100 2T 10 1T 1 1 1 10 100 1 1000 10 100 1000 Frequency (MHz) Frequency (MHz) ESD-R-38C-1 ESD-R-47 10000 10000 1000 3T Impedance () Impedance () 100 Frequency (MHz) 10000 2T 100 1T 10 1000 3T 100 2T 10 1T 1 1 1 10 100 1 1000 10 100 1000 Frequency (MHz) Frequency (MHz) ESD-R-57 ESD-R-47D-1 10000 1000 3T 100 2T Impedance () 10000 Impedance () 10 1T 10 1000 3T 100 2T 10 1T 1 1 1 10 100 1000 1 10 100 1000 Frequency (MHz) Frequency (MHz) ESD-R-57D-1 Impedance () 10000 3T 1000 2T 100 1T 10 1 1 10 100 1000 Frequency (MHz) EMI Core VOL.07 All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data. Please request for a specification sheet for detailed product data prior to the purchase. Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 2008.03.06 P0911MCEC10VOL07E