Nanocrystalline And Amorphous Core (Stb05-00)

NANOCRYSTALLINE AND AMORPHOUS CORE (STB05-00) 1. Introduction Nanocrystalline and amorphous core, with unique combination of high Bs , high µ and lower core loss, have excellent ratio of properties vs price. They widely used for telecommunication, power electronics, EMC and sensor, Which is available for high frequency application and small size. Our product made by Nanocrystalline and amorphous alloys consist of follow major core types:  Distributed

gap FJ-series Fe-base amorphous core for car audio, PFC, differential mode choke and smoothing

choke  With-gap

FG and FCG-series Fe-base amorphous core for PFC, differential mode choke and smoothing

choke  WUL

Nanocrystalline-series high inductance choke core for common mode EMC choke Nanocrystalline-series

 WWL

Nanocrystalline-series power core with lower loss for SMPS, Inverters and pulse transformer Nanocrystalline-series

 CL-series  CB

Co-base amorphous lower loss core for high frequency power transformer

and CZ-series Co-base amorphous core for Mag-Amp and noise suppression devices

 CDCT

and FCT-series FCT-series Co-base and Fe-base core for current transformer with and without DC-tolerance

2. Core code construction  Products Number:

WU

L

26

10 Height mm Outer diameter mm Character,Application&method Material code

 Letters and number of code:

Letters No 1:Material Code

Letters No 2:Characteristics, application and making method

F

Fe-base Amorphous alloy

B

Beads

C

Co-base Amorphous alloy

CG

C-core with gap

L

with flat Loop

N

Fe-Ni-base Amorphous allou

G

Toroidal core with gap

P

for Pulse Transformer

WU

Fe-ba -base Nanocrystalline alloy

I

for ISDN, EMI

U

High µ0

J

Distributed gap

W

Low loss for Power core

K

for Spark killer

Z

with Square Loop

Number No 3:Outer diameter for Toroidal core in mm (for FJ-series, Added 10,25 and 37 values Indicates max. Magnetic Field to Saturation )or outer length for C-core in mm Number No 4: Height of core in mm

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AMORPHOUS AND MICROCRYSTALLINE DISTRIBUTED FJ-SERIES FE-BASE AMORPHOUS CHOKE CORES (STB05-01) Distributed gap FJ-series choke core made from Fe-base amorphous alloy have low leakage flux and core loss due to avoid concentrate air gap and have excellend frequency and dc bias characteristics. The series cores are 

provided with different permeability120-1200and dc bias characteristics 5-100 Oein large range suitable for applications of car audio consist of FJ10





PFC





it is

differentia l mode choke and smoothing choke.The series cores

FJ25 and FJ37 as follow 

Distributed gap FJ10-series amorphous choke cores for car audio (STB05-01A)  Features

High saturation flux density(1.5T) and high permeability ( µ700-1200), good dc bias characteristics, very low leakage field due to no-gap, excellent frequency and temperature characteristics, low core loss.  Applications

Application to car audio, PFC, differential mode choke and smoothing choke  Dimension

and performance

Core code

Core

Finished

Dimension

Dimension

Le

ALo

rated

(mm)

(mm )

(cm)

Idc=0

(A.T)

(µ H/N2) FJ10-10A100

 8/12 

4.5

 6.3/13.8

Bias Properties

DCB



N

Idc

Lv

rated

min

(Ts)

(A)

(µH)

6 .5

3.14

0.19

38

38

1.0

100

FJ10-05A500

 10/16  8.0

 8.3/18.2



10.3

4.08

0.85

16

32

0.5

500

FJ10-10A150

 10/16  8.0

 8.3/18.2



10.3

4.08

0.50

20

20

1.0

150

FJ10-10A250

 11/18  8.0

 9.1/20.3



10.2

4.55

0.70

24

24

1.0

250

FJ10-10A150

 11/18



10

 9.1/20.3



12.2

4.55

0.50

20

20

1.0

150

FJ10-17A240

 11/18



10

 9.1/20.3



12.2

4.55

0.57

46

27

1.7

240

FJ10-10A350

 11/18



10

 9.1/20.3



12.2

4.55

0.78

30

30

1.0

350

FJ10-20A187

 12/20  8.0

 10.6/21.8 

10

5.02

0.30

54

27

2.0

187

FJ10-18A280

 12/20

 10.6/21.8 

12

5.02

0.84

31.5

28

1.8

280

1)



10

1.5

f = 1 KHz KHz

2) Lv : L value at at condition condition of rated rated N, Idc and DCB

1.2

3) DCB : dc bias bias value rated

FJ10

4) Tolerance of ALo: 20%

0.9

) T ( B

FJ25





100

100

80

FJ10-10A100

80 FJ10 FJ25

) 60 % ( O L / 40 L

FJ10-05A500 FJ10-10A150

) 60 % (

FJ37

FJ10-20A187

0

L / L 40

20

20

0 1

10 H-field(Oe)

0

100

1

10

100

A.T(Ampere Turn)

dc-bias Characteristics for FJ-Series cores

dc-bias dcbias Char Charact acteri eristi stics cs for FJ10 core coress

1000 100

80

) 100 g K / W ( s s o l e r o c P 10

) z H e 60 c 0 0 n a 0 t c 1 u o d t n d 40 l r e % f e r (

20K 40K 100K

20

200K

0

1 1 00 Core loss vs

10 0 0 Bm (Gs) flux density for FJ10 cores

1 0 0 00

1

10

100 1000 f(KHZ) Frequency Characteristics for FJ10 cores

Distributed gap FJ25-series amorphous choke cores for smoothing choke (STB05-01B)  Features

High saturation flux density(1.5T) and high permeability( µ400)



good dc bias characteristics, inductance

 300KHz  reduction ratio is 50% at bias field 25 Oe, very low leakage field due to no-gap excellent frequency 

and temperature characteristics



low core loss.

 Applications

Application to smoothing choke ,PFC and differential mode choke.  Dimension

and performance

Core

Finished

Core

Dimension

Dimension

Ae

Le

ALo

DC rated bias

Code

(mm)

( mm )

(mm2)

(cm)

Idc=0

(A.T)

(µH/N2) FJ25-1004

 6.5/10

FJ25-1608

 10/16 

8.0

 8.3/18.2

FJ25-1808

 11/18 

8.0

FJ25-1810

 11/18 

10



4.5

 5.1/11.2

5.8

5.5

2.59

0.072



10.3

16.8

4.08

0.141

 9.1/20.3



10.2

19.2

4.55

0.147

87.0

 9.1/20.3



12.2

24.5

4.55

0.184

87.0



50.8 78.0





AMORPHOUS AND MICROCRYSTALLINE 100 FJ25-1004 FJ25-1608

80

1000

FJ25-1808

) 60 % ( 0 L / L 40

) 100 g k / w w ( s s o L e r 10 o c P

FJ25-2610

20 0 1

20K 40K

10 100 A.T (Ampere Turn) dc-bias Characteristics for FJ25 cores

100K 200K 100

1 100

1000

10000 80 ) z H e c K 0 60 n 0 a t c 1 o u t d d n e 40 l r % e f e r ( 20

B(Gs) Core loss vs flux density of FJ25 cores

0

Distributed gap FJ37 series amorphous choke cores for smoothing choke (STB05-01C)

1

10

100 1000 f(KHZ) Frequency Characteristics for FJ25 cores

 Features

High saturation flux density(1.5T) and high permeability(  270) reduction ratio is 50% at bias field 37 Oe





good dc bias characteristics

very low leakage field due to no-gap



inductance

excellent frequency



300KHz and temperature characteristics low core loss. 

 Applications

Application to smoothing choke, PFC and differential mode choke.  Dimension

and performance

Core

Finished

Core

Dimension

Dimension

Ae

Le

ALo

DC rated bias

Code

(mm)

(mm)

(mm2)

(cm )

Idc=0

(A.T)

(µH/N2) FJ37-1405

 10/14 

5.0

 8.6/15.5

7.2

7.0

3.77

0.072

111

FJ37-1608

 10/16 

8.0

 8.3/18.2



10.3

8.4

4.08

0.150

121

FJ37-1808

 11/18 

8.0

 9.1/20.3



10.2

19.2

4.55

0.130

136

FJ37-1810

 11/18 

10

 9.1/20.3



12.2

24.5

4.55

0.160

136

FJ37-2610

 16/26 

10

 14/27.5



12.5

35.0

6.60

0.150

192

FJ37-3210

 20/32 

10

 17.8/34



12 5

42 0

8 16

0 160

244







1000

100

80 ) z H e c K n 60 a 0 t c 0 u 1 o d t n d l 40 e r e % f e r ( 20

) g k100 / w ( s s o l e r o c 10 P

20K 40K 100K 200K

0 1

10

100

1

1000

100

f(KHz) Frequency Characteristics for FJ37 cores

1000 B(Gs)

10000

Core loss vs flux density of FJ37 cores

100 FJ37-1405

80

FJ37-1808

) % ( 60 0 L / L 40

FJ37-3210 FJ37-4013

20 0 1

10

100 A.T (Ampere Turn) dc-bias Characteristics for FJ37 cores

1000

WITH GAP FG-SERIES FE-BASE AMORPHOUS TOROIDAL CHOKE CORES(STB05-02) 

Features High saturation flux density(1.5T) and high permeability(  200 or 100) Oe characteristics





better frequency and temperature characteristics.

Applications Application to PFC



excellent dc bias field 50 or 100





smoothing choke and differential mode choke.

Dimension and performance

1FG50 Series

Core Code

Core Dimensions

Finished Dimensions

Electric Parameters

(mm)

(mm)

(typical)

ID

OD

H

ID

OD

H

FG50-2008

12.0

20.0

8. 0

9.7

22.5

FG50-2610

16.0

26.0

10.0

14.3

30.2

A Lo

DCB* 2

(µH/N )

(AT)

11.0

0.120

180

13.5

0.132

240





AMORPHOUS AND MICROCRYSTALLINE 2FG100 Series Core Dimensions

Finished Dimensions

(mm)

(mm)

Core Code

Electric Parameters (typical) ALo

DCB*

(µH)

(AT)

13.5

0.060

520

34.5

13.5

0.070

650

23.0

45.0

16.0

0.080

800

15.0

23.0

45,0

19.0

0.095

810

46.0

20.0

24.5

48,8

23.0

0.155

910

27.0

46.0

25.0

24.5

48,8

28.0

0.190

900

FG100-5015

32.0

50.0

15.0

29.0

55.0

18.0

0.090

1030

FG100-5920

40.0

59.0

20.0

37.0

63.5

24.0

0.100

1250

FG100-6420

40.0

64.0

20.0

37.0

69.0

24.0

0.120

1300

FG100-8020

50.0

80.0

20.0

47.0

83.7

25.4

0.130

1700

FG100-12030

80.0

120.0

30.0

75.3

124.6

34.8

0.125

4500

ID

OD

H

ID

OD

H

FG100-2610

16.0

26.0

10.0

14.3

30.2

FG100-3210

20.0

32.0

10.0

17.5

FG100-4013

25.0

40.0

12.5

FG100-4015

25.0

40.0

FG100-4620

27.0

FG100-4625

Note* 1. DCB:AL value is reduced to 75% at the rated DC bias 2. Tolerance of A L  20%

Electric characteristics of coil (typical)

Code

FG50-2008

FG50-2610

FG50-3210

Core Dimensions (mm)

12  20  8.0

16  26  10

20  32  10

Rated dc Current

Inductance

AL

Turns 2

( A)

L(µ H)

(µH/N )

(Ts)

3. 0

400

5.0

155

8. 0

60

23

10.0

40

19

3. 0

1000

87

5. 0

300

48

8.0

155

10.0

100

28

15.0

45

18

5. 0

505

65

8. 0

255

46

10.0

165

15.0

75

25

20 0

45

19

60 0.115

0.133

0.120

37

34

37







1.5

100

1.2 0.9

80

0.6

) T ( B

FG-2610 FG-3210

0.3 0

) 60 % ( 0 L / L 40

-0.3 -0.6 -0.9

FG-4013 FG-5015

-1.2 -1.5 -100

20 -80

-60

-40

-20

0

20

40

60

80

100

H-field(Oe) dc hysteresis loops for FG50 Series cores

0 10

1000

) 100 g k / W ( s s o l e r 10 o c P

1000 100 A.T (Ampere×Turn) dc-bias characteristics for FG50 cores

100KHz 80KHz 40KHz 20KHz

1 100

1000 B(Gs)

10000

Core loss vs flux density of FG50 cores

FCG-SERIES FE-BASE AMORPHOUS CORE (C-CORE)(STB05-03) 

Features High saturation flux density(1.5T)



excellent DC bias field characteristics



low loss and small size.

Applications Smoothing choke







DC-DC convertor



PFC and differential mode choke.

Dimension and performance

Core Code

Core Dimensions (mm)

Le

Ae

MASS

Wa





AMORPHOUS AND MICROCRYSTALLINE Electric characteristics characteristics of coil (typical) Code

FCG-105

FCG-128

Finished Dimensions (mm)

105  52  25

128  79  25

Gap length

AL

DC bias max 2

(mm)

(µH/N )

(AT)

0.5  2

0.56

600

1.0  2

0.34

1300

2.0  2

0.21

2400

3.0  2

0.16

3000

4.0  2

0.13

4000

0.5  2

0.70

900

1.0  2

0.40

1300

2.0  2

0.26

2700

3.0  2

0.20

3200

4.0  2

0.16

4600

5.0  2

0.14

5600





WUL-SERIES NANOCRYSTALLINE CORES WITH HIGH INDUCTANCE (STB05-04)

 Features

1) High permeability (>60000) and A L value, high insertion attenuation 2) High saturation flux density(1.2T) and excellent large current sparks suppression effect 3) Excellent temperature characteristics due to high curie temperature Tc (580 ) 4) Small size 5) Low Br( 0.2T)and resistant to current bias due to electrical leakage and 3-Phase unbalanced current  Applications

common mode chokes, current transformers and ELPB  Dimension

and performance

Core Co res s Dim Dimen ensi sion on

Fini Finish shed ed Dimen imensi sion on

AL (µH/N2) min

OD  ID  H (mm )

OD  ID  H (mm)

f = 10KHz Grade A

Grade B

GradeC

WUL-0703

4.3  7.2  3.0

3.6  8.3  3.7

7.0

8. 0

9. 0

WUL-1004

6.5  10  4.5

5.0  11.8  6.8

10.0

12.5

15.0

WUL-1204

8.0  12  4.5

6.6  14.3  6.9

10.0

12.5

15.0

WUL-1404

10  14  4.5

8.7  15.4  7.1

10.0

12.5

15.0

WUL-1608

10  16  8.0

8.7  17.7  9.8

15.0

18.0

22.0

WUL-2008

12  20  8.0

10.7  21.7  9.9

16.0

19.0

22.0

WUL-2010

12  20  10

10.6  22.3  12.6

20.0

25.0

30.0

WUL-2610

16  26  10

13.9  28.0  12.5

35.0

40.0

50.0

WUL-2815

18  28  15

16.3  29.6  16.9

40.0

46.0

55.0

WUL-3210

20  32  10

17.9  34.1  13.2

25.0

32.0

38.0

WUL-3718

20  37  18

17.8  39.0  19.9

60.0

75.0

90.0

WUL-4010

25  40  10

22.6  43.1  13.5

22.0

30.0

38.0

WUL-4013

25  40  12.5

23.0  42.4  15.3

25.0

32.0

40.0

Core Code





AMORPHOUS AND MICROCRYSTALLINE WWL-SERIES NANOCRYSTALLINE POWER CORES(STB05-05) 

Features High saturation flux density(1.25T) low core loss and high pulse permeability µP 



Applications SMPS





Inverters



Drive transformers



Single-polar pulse transformers and semiconductor protection

Dimension and performance 1The size of core is equivalent to WUL-cores 2Performance of cores

Magnetic cores electromagnetism characteristics Core code

WWL-

B10

Br

(T)

(T)

~1.20

 0.2

Core loss

µi

P0.5T/20KHz

reference

W/Kg  25.0small

scale

 30.0large

scale

30000-60000

Other core sizes customer required are available.

15000

1000 200K

10000 5000

) s G (

0

B -5000 -10000

100K

) 100 g k / W ( s s o l e r o c 10 P

40K 20K

Lamination factor K reference

0.70-0.75





LOW Br Co-BASE AMORPHOUS CL-TYPE CORES(STB05-06) for high frequency power transformer 

Features High permeability (  100000) low core loss and excellent frequency characteristics 



Applications Power and pulse transformer with smaller size under high frequency100-300KHz



Dimension and performance 1The size of cores is equal to WUL-cores 2Performance of cores

Electromagnetism Characteristic Core code

P0.3T/100KHz

Br

Bs

(W/kg)

(Gs)

(Gs)

CL-60

 120

CL-80

 140

600 500

5500 7500

CB AND CZ-TYPE Co-BASE AMORPHOUS CORES(STB05-07) for noise suppressing and Mag-Amp 

Features High Br/Bs at 100KHz Low core loss under high fr equency High max permeability µm



Applications Noise suppression device





Mag-Amp and magnetic switches

Dimension and performance The size of core is equal to WUL-core



CB-type cores is small size beads cores

Performance CB and CZ cores

Specification of CB Beads Core Dimension

mm mm

AL

Φs 2

Ae

Le 2

Nanocrystalline And Amorphous Core (Stb05-00)

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