FT37-16
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  • Beschreibung

MATERIAL 16 (Permeabilität 120)

Eine Ringkonfiguration bietet die ultimative Nutzung der Eigenschaften des intrinsischen Ferritmaterials. Ringkerne werden in einer Vielzahl von Anwendungen eingesetzt, z. B. als Eingangsfilter, Fehlerstromschutzschalter, Gleichtaktfilter und in Impuls- und Breitbandtransformatoren.

Ein Nickel-Zink-Material, das mittlere Temperaturstabilität, aber eine hohe Güte bietet (0,2 bis 15 MHz). In erster Linie Ersatz als Ringkern in Spulen hoher Güte. Auch lieferbar in Stabform oder als Breitband-Balunkern.

Ferrit-Ring für Breitbandtransformatoren
Frequenz hohe Güte bis 200 MHz

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  

16 Material Characteristics

Property

Item

Unit/Symbol

Value

Max.

Permeabilität

Freq. MHz Reso-nanz

Freq. MHz

Breit-band

Freq.

MHz

Drossel

Initial Permeability@ B < 10 gauss

 

µi

120

450

0.2-10

10-200

200-1000

Flux Density @ Field Strength

Gauss
Oersted

B

H

2500

15

Mittlere Feld-

Linienlänge

2.07 cm

Oberfläche

0.15 cm³

Volumen

0.072 cm²

Residual Flux Density

Gauss

Br

1000

 

 

 

Coercive Force

Oersted

Hc

1.8

Sättigungsflußdichte

10 Oe (Gauß)

2500

Vol.Widerstand Ω/cm

10⁸

Loss Factor @ Frequency

10 -6
MHz

Tan δ/ µi

30

1(Typ)

Remanenzflußdichte

10 Oe (Gauß)

1000

Σl/A(cm-1)

28.6

Temperature Coefficient of Initial Permeability (20 -70°C)

%/°C

 

0.10

 

Density gm/cm3

 

≈4.7 g/cm3

Curie Temperature

°C

Tc

>300

Resistivity

Ohm-cm

Ρ

1×108

1×108

Electrical Specifications

Bestellnr.

Kern-Material

Item

Unit/Symbol

Condition

Value

AL-Toleranz

 

FT37-16

Ferrit Toroid

AL

nH/N2

@ 10 KHz

55

±25%

NiZn

Le

cm

N/A

2.07

±10%

Ae

cm²

N/A

0.072

±10%

Ve

cm³

N/A

0.15

±10%

Initial Permeability

µ0

@ B < 10 gauss

120

±25%

Temp. Coeff. Of initial

Permeability

% °C

20-70°C

0.10

Typ.

Coercive Force

Hc

oersted

1.1

Typ.

Residual Flux Density

Gauss, Br

N/A

1000

Typ.

Flux Density

Gauss, B

Initial (B), oersted

2500

Typ.

 

Gauss, H @

@ Field Strength (H), oersted

15

Typ.

Curie temperature

°C

Tc

> 300

Nom.

Resistivity

Ω cm. p

@ Field Strength

10⁸

Typ.

Loss Factor

1×108Tan δ/ µi

Initial

30

Typ.

 

MHz

@ Frequency

1

Typ.

Chart Legend

Σl/A(cm-1):

le :

Ae :

Ve :

AL :

 

Core Constant

Effective Path Length

Effective Cross-Sectional

Effective Core Volume

Inductance Factor  

 

 

28.6

2.07

0.072

0.15

55

Dimensional Tolerances

Case

In

Toleranz

mm

Toleranz

Weight

Gewicht

B (Outer Diameter)/mm

0.375

±0.008

9.5

±0.20

0.83 g

0.83 gramm

A (Inner Diameter)/mm

0.187

±0.006

4.75

±0.15

---

---

H (Height)/mm

0.125

±0.010

3.3

-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.

Toroids are tested for AL values at 10 kHz.

 

16 Material

A high frequency NiZn ferrite developed for a range of inductive applications up to 25 MHz. This material is also used in EMI applications for suppression of noise frequencies above 200 MHz. EMI suppression beads, beads on leads, SM beads, wound beads, multi-aperture cores, round cable snap-its, rods, antenna/RFID rods, and toroids are all available in 61 material. Strong magnetic fields or excessive mechanical stresses may result in irreversible changes in permeability and losses.

16 Material Ferrite ToroidsFerrite Toroids 61 Material and is designed for inductive applications up to 25 MHz and also suppresses noise frequencies from 200 MHz to 1000 MHz Inner Diameter 0.186 Outer Diameter 0.376 Height 0.126 Al Value 55

Spezifikationen für FT37-16 RF Toroids

Temperaturstabilität (ppm / ° C

= 1000

Farbcode

= mattes Schwarz

Anwendungsfrequenzbereich

Breitbandtransformatoren

20-500 MHz

Leistungstransformatoren

0,2 - 10 MHz

RFI-Unterdrückung

über 20 MHz

L = 55 ±20% uH = (AL*Turns2) / 1000

Tatsächliche gemessene AL unter Verwendung von 10 Windungen # 28 Draht