Material Data Sheets.

Property Unit Symbol 61 52 51 44 46 43 31 77 78 73 75 76
Initial Permeability
@ B <10 gauss
µ 125 250 350 500 500 800 1500 2000 2300 2500 5000 10000
Flux Density gauss B 2500 4200 3700 3000 3000 2900 3900 5100 4800 4500 4300 4000
mT 250 420 370 300 300 290 390 510 480 450 430 400
 @ Field Strength oersted H 15 10 10 10 10 10 5 5 5 5 5 5
A/m 1200 800 800 800 800 800 400 400 400 400 400 400
Residual Flux Density gauss Br 1000 3300 2500 1100 1900 1300 3200 1800 1500 1650 1400 1800
mT 100 330 250 110 190 130 320 180 150 165 140 180
Coercive Force oersted Hc 1.1 0.6 0.6 0.45 0.4 0.45 0.28 0.25 0.2 0.2 0.16 0.12
A/m 88 48 48 36 32 36 22 20 16 16 13 9.6
Loss Factor 106 tan δ/µ 30 45 40 125 60 250 20 15 4.5 10 15 15
 @ Frequency MHz 1 1 1 1 0.1 1 0.1 0.1 0.1 0.1 0.1 0.025
Temperature Coefficient of %/ºC T.C. 0.1 0.75 1.2 0.75  – – 1.25 1.6 1.2 1 0.5 0.6 0.5
Initial Permeability (20 – 70ºC)
Curie Temperature ºC Tc >300 >250 >170 >160 >140 >130 >130 >200 >200 >160 >140 >120
Resistivity ohm-cm p 10 8 10 9 10 9 10 9 10 8 10 5 3000 100 200 100 300 50
Application Area EMI suppression
Recommended
Frequency Range
MHz 200-2000 200-1000 <200 25-300 25-300 25-300 1-300  – –  – – <50 <20  – –
Property Unit Symbol 68 67 61 52 51 43 79 77 97 78 98 95 75 76
Initial Permeability
@ B <10 gauss
µ 16 40 125 250 350 800 1400 2000 2000 2300 2400 3000 5000 10000
Flux Density gauss B 2700 2500 2500 4200 3700 2900 4700 5100 5000 4800 5000 5000 4300 4000
mT 270 250 250 420 370 290 470 510 500 480 500 500 430 400
 @ Field Strength oersted H 40 20 15 10 10 10 5 5 5 5 5 5 5 5
A/m 3200 1600 1200 800 800 800 400 400 400 400 400 400 400 400
Residual Flux Density gauss Br 900 1000 1000 3300 2500 1300 1700 1800 1500 1500 1800 800 1400 1800
mT 90 100 100 330 250 130 170 180 150 150 180 80 140 180
Coercive Force oersted Hc 6.5 2.5 1.1 0.6 0.6 0.45 0.4 0.25 0.16 0.2 0.17 0.13 0.16 0.12
A/m 520 200 88 48 48 36 32 20 13 16 14 10 13 9.6
Loss Factor 106 tan δ/µ 400 200 30 45 40 250 4 15 3.5 4.5 3.5 3 15 15
 @ Frequency MHz 100 50 1 1 1 1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.025
Temperature Coefficient of %/ºC T.C. 0.1 0.05 0.1 0.75 1.2 1.25 0.6 1.2 1.4 1 1.5 0.4 0.6 0.5
Initial Permeability (20 – 70ºC)
Curie Temperature ºC Tc >500 >475 >300 >250 >170 >130 >225 >200 >220 >200 >215 >220 >140 >120
Resistivity ohm-cm p 10 7 10 7 10 8 10 9 10 9 10 5 200 100 200 200 200 200 300 50
Application Area Low flux density devices
Recommended
Frequency Range
MHz <400 <300 <100 <20  – – <10  – – <3  – – <2.5  – –  – – <0.75 <0.5
Property Unit Symbol 67 61 79 77 97 78 98 95
Initial Permeability
@ B <10 gauss
µ 40 125 1400 2000 2000 2300 2400 3000
Flux Density gauss B 2500 2500 4700 5100 5000 4800 5000 5000
mT 250 250 470 510 500 480 500 500
 @ Field Strength oersted H 20 15 5 5 5 5 5 5
A/m 1600 1200 400 400 400 400 400 400
Residual Flux Density gauss Br 1000 1000 1700 1800 1500 1500 1800 800
mT 100 100 170 180 150 150 180 80
Coercive Force oersted Hc 2.5 1.1 0.4 0.25 0.16 0.2 0.17 0.13
A/m 200 88 32 20 13 16 14 10
Loss Factor 106 tan δ/µ 200 30 4 15 3.5 4.5 3.5 3
 @ Frequency MHz 50 1 0.1 0.1 0.1 0.1 0.1 0.1
Temperature Coefficient of %/ºC T.C. 0.05 0.1 0.6 1.2 1.4 1 1.5 0.4
Initial Permeability (20 – 70ºC)
Curie Temperature ºC Tc >475 >300 >225 >200 >220 >200 >215 >220
Resistivity ohm-cm p 10 7 10 8 200 100 200 200 200 200
Application Area Power magnetics
Recommended
Frequency Range
MHz <20 <5 <0.75 <0.1 <0.4 <0.2 <0.2 <0.2

 

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