MATERIAL 67 (Permeabilität 40)
Ein Nickel-Zink-Material mit großer Ähnlichkeit zu Material 63. Hat ausgezeichnete Stabilität und einen erweiterten Frequenzbereich von 10 bis 80 MHz sowie eine höhere Flußdichte gegenüber Material 63, dagegen einen etwas niedrigeren Volumenwiderstand. Sehr gut geeignet für HF-Anwendungen hoher Güte. Wird verbreitet für Breitbandverstärker und Linearendstufen eingesetzt.
Features
NiZn ferrite material with a range for inductive applications up to 25 MHz, that can be used for EMI applications to suppress noise frequencies above 200 MHz.
Burnished to break sharp edges, can contain Parylene C coat at smaller diameters from the length of 9.5mm (0.375") or a uniform coating of thermo-set plastic at larger dimensions (if part numbers ends with a C).
Toroide werden auf AL-Werte bei 10 kHz getestet.
Chart Legend
Σl/A : Core Constant, le : Effective Path Length, Ae : Effective Cross-Sectional Area, Ve : Effective Core Volume, AL : Inductance Factor
|
67 Material Characteristics |
|
Property |
Unit |
Symbol |
Value |
Max.
Permeabilität |
Freq. MHz Resonanz |
Freq. MHz Breitband |
Freq. MHz Drossel |
|
Initial Permeability@ B < 10 gauss |
|
µi |
40 |
125 |
15-25 |
50-500 |
500-2000 |
|
Flux Density @ Field Strength |
Gauss
Oersted |
B
H |
2500
20 |
Mittlere Feld-
Linienlänge
5.2 cm |
Oberfläche
0,243 cm² |
Volumen
1.26 cm³ |
|
Residual Flux Density |
Gauss |
Br |
1000 |
|
|
Coercive Force |
Oersted |
|
2.5 |
Sättigungsflußdichte
10 Oe (Gauß)
2500 |
Vol.Widerstand Ω/cm
10⁷ |
|
Loss Factor @ Frequency |
10 -6
MHz |
Tan δ/ µi |
200
50 |
Remanenzflußdichte
10 Oe (Gauß)
1000 |
Σl/A(cm-1)
21.3 |
|
Temperature Coefficient of Initial Permeability
(20 -70°C) |
%/°C |
|
0.05 |
Density gm/cm3
≈4.7 g/cm3 |
|
Curie Temperature |
°C |
Tc |
>475 |
|
Resistivity |
Ohm-cm |
Ρ
|
1x10⁷ |
|
Electrical Specifications |
|
Bestellnr. |
Kern-Material |
Item |
Unit/Symbol |
Condition |
Value |
AL-Toleranz |
|
|
FT82-67 |
Ferrit Toroid |
AL |
nH/N2 |
@ 10 KHz |
24 |
+35%,
-25% |
|
NiZn |
|
Amidon.de
|
Le |
cm |
N/A |
5.2 |
±10% |
|
Ae |
cm² |
N/A |
0.243 |
±10% |
|
Vef |
cm³ |
N/A |
1.26 |
±10% |
|
Initial Permeability |
µ⁰ |
@ B < 10 gauss |
40 |
±20% |
|
Temp. Coeff. Of initial
Permeability |
% °C |
20-70°C |
0.05 |
Typ. |
|
Coercive Force |
Hc |
oersted |
2.5 |
Typ. |
|
Residual Flux Density |
Gauss, Br |
N/A |
1800 |
Typ. |
|
Flux Density |
Gauss, B |
Initial (B), oersted |
2500 |
Typ. |
|
|
Gauss, H @ |
@ Field Strength (H), oersted |
20 |
Typ. |
|
Curie temperature |
°C |
Tc |
> 475 |
Nom. |
|
Resistivity |
Ω cm. p |
@ Field Strength |
10⁷ |
Typ. |
|
Loss Factor |
106Tan δ/ µi |
Initial |
200 |
Typ. |
|
|
MHz |
@ Frequency |
15 |
Typ. |
|
Chart Legend |
|
Σl/A : |
le : |
Ae : |
Ve : |
AL : |
|
|
Core Constant |
Effective Path Length |
Effective Cross-Sectional |
Effective Core Volume |
Inductance Factor
|
|
|
21.3 |
5.2 |
0.243 |
1.26 |
24 |
|
Dimensional Tolerances |
|
Case |
In |
Toleranz |
mm |
Toleranz |
Weight |
Gewicht |
|
B (Outer Diameter)/mm |
0.825 |
±0.014 |
21 |
±0.35 |
6.40g |
6.40 gramm |
|
A (Inner Diameter)/mm |
0.520 |
±0.012 |
13.20 |
±0.30 |
--- |
--- |
|
H (Height)/mm |
0.250 |
±0.010 |
6.35 |
±0.25 |
--- |
-- |
|
Ferrite Material Constants |
|
Specific Heat |
0.25 cal/g/°C |
|
Thermal Conductivity |
3.5 - 4.5 mW/cm-°C |
|
Coefficient of Linear Expansion |
8 - 10x10-6/°C |
|
Tensile Strength |
4.9 kgf/mm2 |
|
Compressive Strength |
42 kgf/mm2 |
|
Young's Modulus |
15x103 kgf/mm2 |
|
Hardness (Knoop) |
650 |
|
Specific Gravity |
≈4.7 g/cm3 |
|
Die oben genannten Eigenschaften sind typisch für Amidon MnZn- und NiZn-Ferrite.
The above quoted properties are typical for Amidon MnZn and NiZn ferrites. |