MATERIAL 75 (Permeabilität 5000)
Ein Mangan-Zink-Material, mit geringem Volumenwiderstand und niedrigen Kernverlusten zwischen 1 kHz und 1 MHz. Wird für Transformatoren niedriger Leistung, Breitbandübertrager und Puls-Transformatoren benutzt. Sehr geeignet auch zur Dämpfung unerwünschter HF im Bereich von 5 bis 20 MHz.
Ein MnZn-Ferrit mit hoher Permeabilität, der für eine Reihe von Breitband- und Impulstransformator-Anwendungen und Gleichtaktinduktordesigns vorgesehen ist.
A high permeability MnZn ferrite intended for a range of broadband and pulse transformer applications and common-mode inductor designs
Chart Legend
Σl/A : Core Constant, le : Effective Path Length, Ae : Effective Cross-Sectional Area, Ve : Effective Core Volume, AL : Inductance Factor
|
75 Material Characteristics |
|
Property |
Unit |
Symbol |
Value |
Max.
Permeabilität |
Freq. MHz Resonanz |
Freq. MHz Breitband |
Freq. MHz Drossel |
|
Initial Permeability@ B < 10 gauss |
|
µi |
5000 |
9500 |
0.001-1 |
0.15-12 |
1-20 |
|
Flux Density @ Field Strength |
Gauss
Oersted |
B
H |
4300
5 |
Mittlere Feld-
Linienlänge
5.2 cm |
Oberfläche
0,243 cm² |
Volumen
1.26 cm³ |
|
Residual Flux Density |
Gauss |
Br |
1400 |
|
|
Coercive Force |
Oersted |
Hc |
0.16 |
Sättigungsflußdichte
10 Oe (Gauß)
4300 |
Vol.Widerstand Ω/cm
5x10² |
|
Loss Factor @ Frequency |
10 -6
MHz |
Tan δ/ µi |
15
0.1 |
Remanenzflußdichte
10 Oe (Gauß)
1400 |
Σl/A(cm-1)
21.3 |
|
Temperature Coefficient of Initial Permeability
(20 -70°C) |
%/°C |
|
0.6 |
Density gm/cm3
≈4.7 g/cm3 |
|
Curie Temperature |
°C |
Tc |
>140 |
|
Resistivity |
Ohm-cm |
Ρ
|
300 |
|
Electrical Specifications |
|
Bestellnr. |
Kern-Material |
Item |
Unit/Symbol |
Condition |
Value |
AL-Toleranz |
|
|
FT82-75 |
Ferrit Toroid |
AL |
nH/N2 |
@ 10 KHz |
2950 |
±20% |
|
MnZn |
|
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 |
5000 |
±20% |
|
Temp. Coeff. Of initial
Permeability |
% °C |
20-70°C |
0.6 |
Typ. |
|
Coercive Force |
Hc |
oersted |
0.16 |
Typ. |
|
Residual Flux Density |
Gauss, Br |
N/A |
1400 |
Typ. |
|
Flux Density |
Gauss, B |
Initial (B), oersted |
4300 |
Typ. |
|
|
Gauss, H @ |
@ Field Strength (H), oersted |
5 |
Typ. |
|
Curie temperature |
°C |
Tc |
> 140 |
Nom. |
|
Resistivity |
Ω cm. p |
@ Field Strength |
5x10² |
Typ. |
|
Loss Factor |
106Tan δ/ µi |
Initial |
15 |
Typ. |
|
|
MHz |
@ Frequency |
0.1 |
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 |
2950 |
|
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. |