EMI Core VOL.07
Ring Type
●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
Toroidal Cores with Case
[RoHS Compliant]
Toroidal Cores with Case
[RoHS Compliant]
OD T
ID
ESD-R Series
Shape and Dimensions
1 10 100 1000
1
10000
1000
100
10
1T
2T
3T
Impedance ()
ESD-R-12D
Frequency (MHz)
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-19
Impedance vs. Frequency
ESD-R-12D 12.9 6.0 6.4 ●black ESD-R-12S
ESD-R-19 19.0 9.0 11.0 ●white ESD-R-19S
ESD-R-19D 19.0 9.0 11.0 ●black ESD-R-19SD
ESD-R-25 26.0 14.0 15.0 ●white ESD-R-25S
ESD-R-25D 26.0 14.0 15.0 ●black ESD-R-25SD
ESD-R-38 39.0 17.5 14.0 ●white ESD-R-38D
ESD-R-38C-1 39.0 17.5 14.0 ●with tape(black) white −
ESD-R-47 48.0 25.5 16.0 ●white −
ESD-R-47D-1 48.0 25.5 16.0 ●with tape(black) white −
ESD-R-57 61.0 32.4 24.0 ●white −
ESD-R-57D-1 61.0 32.4 24.0 ●with tape(black) white −
Model Dimensions (mm) Frequency range Remarks Color of case
Compatible toroidal core
OD ID T
up to 100MHz up to 300MHz
(bare type)
(mainly AM band range) (mainly FM band range)
※Above frequency range is a reference only. Please test with actual device before use. ※Flame resistant grade of the case : UL94V-2
EMI Core VOL.07
Ring Type
●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
1
10000
1000
100
10
1T
2T
3T
Frequency (MHz)
1 10 100 1000
Impedance ()
ESD-R-19D
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-25
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-25D
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-38C-1
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-47D-1
1 10 100 1000
1
10000
1000
100
10
Impedance ()
Frequency (MHz)
ESD-R-57D-1
1T
2T
3T
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-38
1
10000
1000
100
10
1T
2T
3T
1 10 100 1000
Impedance ()
Frequency (MHz)
ESD-R-47
1 10 100 1000
1
10000
1000
100
10
1T
2T
3T
Impedance ()
Frequency (MHz)
ESD-R-57
Impedance vs. Frequency