MATERIAL 43 (Permeabilität 850)
Ein Nickel-Zink Material mit großem Volumenwiderstand. Wird häufig für Spulen mittlerer Frequenz in Ringform und für Breitbandüber¬trager bis 50 MHz benutzt. Wird als Ferritperle besonders zur Dämpfung unerwünschter Oberwellen im Bereich von 50 bis 200 MHz 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).
Beschichtungsoptionen:
- Toroide mit einem Außendurchmesser von 9,5 mm (0,375 ") oder kleiner können mit Parylen C beschichtet werden. Die Parylene-Beschichtung erhöht die Abmessungen "A" und "C" und verringert die Abmessung "B" um maximal 0,038 mm (0,0015 "). Die neunte Ziffer einer Parylene-beschichteten Toroid-Teilenummer ist eine "1". Siehe Referenztabellen für die Materialeigenschaften von Parylene C. Parylene C-Beschichtung sind RoHS-konform.
- Thermoplastisch beschichtete, kunststoffbeschichtete Teile können einer Mindestdurchschlagsspannung von 1000 Vrms widerstehen, die gleichmäßig über die "C" -Abmessung des Toroids angelegt wird.
Coating Options:
– Toroids with an outside diameter of 9.5 mm (0.375″) or smaller can be supplied Parylene C coated. The Parylene coating will increase the “A” and “C” dimensions and decrease the “B” dimension a maximum of 0.038 mm (0.0015″). The ninth digit of a Parylene coated toroid part number is a “1”. See reference tables for the material characteristics of Parylene C. Parylene C coating is RoHS compliant.
Chart Legend
Σl/A : Core Constant, le : Effective Path Length, Ae : Effective Cross-Sectional Area, Ve : Effective Core Volume
AL : Inductance Factor
|
43 Material Characteristics |
|
Property |
Unit |
Symbol |
Value |
Max.
Permeabilität |
Freq. MHz Resonanz |
Freq. MHz Breitband |
Freq. MHz Drossel |
|
Initial Permeability@ B < 10 gauss |
|
µi |
830 |
3000 |
0.01-1 |
1-50 |
30-600 |
|
Flux Density @ Field Strength |
Gauss
Oersted |
B
H |
2900
10 |
Mittlere Feld-
Linienlänge
8.9 cm |
Oberfläche
0,79 cm² |
Volumen
7 cm³ |
|
Residual Flux Density |
Gauss |
Br |
1300 |
|
|
|
|
Coercive Force |
Oersted |
|
0.45 |
|
Vol.Widerstand Ω/cm
N/A |
|
Loss Factor @ Frequency |
10 -6
MHz |
Tan δ/ µi |
250
1.0 |
Remanenzflußdichte
10 Oe (Gauß)
|
Σl/A(cm-1)
10.7 |
|
Temperature Coefficient of Initial Permeability
(20 -70°C) |
%/°C |
|
1.25 |
Density gm/cm3
≈4.7 g/cm3 |
|
Curie Temperature |
°C |
Tc |
>130 |
|
Resistivity |
Ohm-cm |
Ρ
|
1×105 |
|
Electrical Specifications |
|
Bestellnr. |
Kern-Material |
Item |
Unit/Symbol |
Condition |
Value |
AL-Toleranz |
|
|
FT140-43 |
Ferrit Toroid |
AL |
nH/N2 |
@ 10 KHz |
885 |
±20% |
|
MnZn |
|
|
Le |
cm |
N/A |
8.9 |
±10% |
|
Ae |
cm² |
N/A |
0.79 |
±10% |
|
Vef |
cm³ |
N/A |
7 |
±10% |
|
Initial Permeability |
µ⁰ |
@ B < 10 gauss |
2030 |
±20% |
|
Temp. Coeff. Of initial
Permeability |
% °C |
20-70°C |
1.25 |
Typ. |
|
Coercive Force |
Hc |
oersted |
0.45 |
Typ. |
|
Residual Flux Density |
Gauss, Br |
N/A |
1300 |
Typ. |
|
Flux Density |
Gauss, B |
Initial (B), oersted |
2900 |
Typ. |
|
|
Gauss, H @ |
@ Field Strength (H), oersted |
10 |
Typ. |
|
Curie temperature |
°C |
Tc |
> 130 |
Nom. |
|
Resistivity |
Ω cm. p |
@ Field Strength |
1×105 |
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
|
|
|
11.2 |
8.9 |
0.79 |
7 |
885 |
|
Dimensional Tolerances |
|
Case |
In |
Toleranz |
mm |
Toleranz |
Weight |
Gewicht |
|
B (Outer Diameter)/mm |
1.4 |
±0.030 |
35.55 |
±0.75 |
33.00g |
33.00 gramm |
|
A (Inner Diameter)/mm |
0.9 |
±0.022 |
23 |
±0.55 |
--- |
--- |
|
H (Height)/mm |
0.5 |
±0.020 |
12.7 |
±0.50 |
--- |
-- |
|
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. |
