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G&M Golden Mangetic Technology ( Shenzhen ) Co., LTD.

Tel:+86-755-86332949  Fax: +86-755-26406857

Address:Unit 603, block A huachuangda building,  Baoan District, Shenzhen, Guangodng 

G&M Golden Magnetic Technology (Hongkong ) Co.,Ltd.

Tel:+852-29477355    Fax:+852-29477356

Office Address:1101 Leader industry center, No.57-59 An pui wan Street, Fotan, Shatin, Hongkong

Factory Add:118 Liangtian Zone, Taimei town, Boluo disrict, huizhou city, guangdong province

E-mail:Daniel@goldenmagnetic.com


Low Core Loss High Flux Core

Low Core Loss High Flux Core

Metallic powder cores are made of ferromagnetic powder, coated by insulation material, then mix with organic or inorganic bonding material and press into a soft ferromagnetic material.

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Physical Dimensions

OD

Bare Core Nominal

46.74 mm

1.840 in

Coated Core (max)

47.63 mm

1.875 in

ID

Bare Core Nominal

24.13 mm

0.950 in

Coated Core (min)

23.32 mm

0.918 in

Ht

Bare Core Nominal

18.03 mm

0.710 in

Coated Core (max)

18.92 mm

0.745 in

Magnetic Dimensions

Ae

Effective Magnetic Cross Section 1.99 cm²

Le

Effective  Magnetic Path Length 10.743 cm

Ve

Effective Core Volume 21.4 cm³

WA

Minimum Effective Window Area 4.27 cm²

SA

Surface Area 81.7 cm²

MLT

Mean Length Per Turn 7.38 cm

Permeability

Reference
Perm.

AL Value(nH/N²)

AS Sendust

AF Fe-Si

APH Super Sendust

AH High Flux

14µ

32

AS467014

AF467014

APH467014

AH467014

26µ

59

AS467026

AF467026

APH467026

AH467026

40µ

90

AS467040

AF467040

APH467040

AH467040

60µ

135

AS467060

AF467060

APH467060

AH467060

75µ

169

AS467075

AF467075

APH467075

AH467075

90µ

202

AS467090

AF467090

APH467090

AH467090

125µ

281

AS467125

AF467125

AH467125

147µ

330

AS467147

AH467147

Approx. Unit Weight:

120 g

150 g

120 g

150 g

Test Conditions

Winding

N=70, #20 AWG

Frequency

10 kHz

Voltage

0.62 V

AL Tolerance

±8%

Magnet Wire Winging Data

Wire Size

AWG

8

10

12

14

16

18

20

22

24

26

28

mm

3.150

2.500

2.000

1.600

1.250

1.000

0.800

0.630

0.500

0.400

0.315

Single
Layer

Turns

17

22

28

35

45

56

70

88

111

138

173

Rdc(Ω)

2.6 m

5.3 m

10.7 m

21.4 m

43.7 m

86.5 m

171.9 m

343.7 m

689.5 m

1.4

2.7

Full
Winding

Turns

22

35

54

83

128

199

307

476

736

1,139

1,764

Rdc(Ω)

3.3 m

8.4 m

20.7 m

50.7 m

124.3 m

307.3 m

753.9 m

1.9

4.6

11.3

27.7

Coating/Packaging Information

Coating Type

Black Epoxy

Voltage Breakdown

2500 Vrms

Limit

0.1 mA, 5 s

Package Quantity

150 Pcs/Box

G&M is able to customize the design to meet customers’ requirements.

Main characteristic of metallic powder core

Metallic powder cores are made of ferromagnetic powder, coated by insulation material, then mix with organic or inorganic bonding material and press into a soft ferromagnetic material. The metallic particles are small and coated by insulation material so it can prevent eddy current and the material can be used in higher frequency. On the other hand, the effect of isolated particles causes the material a low permeability and inherent distribution air gap characteristics. It is suitable for energy storing inductor application. Due to the small size of powder particles, it can prevent skin effect; the change of permeability versus frequency is also stable. The electromagnetic characteristic of powder core is decided by the powder’s permeability, size and shape of the powder, the filling coefficient, insulation content, forming pressure and heat treatment technology.

Due to the distributed air-gap, magnetic powder core has soft saturation characteristic. The permeability will drop in a predictable way when DC bias increase. This is a big advantage against the hard saturation in ferrite materials.

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Percent Initial Permeability vs.DC Magnetizing Force

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Percent Initial Permeability vs.Peak AC Flux Density


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Initial Permeability vs.Frequency

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Permeability vs. Temperature


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High flux core (AH)Loss

Workshop and equipment:

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Corporate honor:

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