Low-cost toroidal chokes


Datasheet as PDF
Toroidal chokes for applications at frequencies up to 50 kHz
Fields of application and table see below

 

cesymb_harmonicsenergylow_stryfield_sign


 

open, upright version

 

open, lying version

 

 

 

upright toroidal choke

 

lying toroidal choke

 

 

Picture 1

Picture 2

Picture 3

Picture 4

Picture 5

Picture 6

RD_5_3_mm
RD_5_4_mm
RD_5_5_mm
RD_5_6_mm
RD_5_7_mm
RD_6_1_mm
RD_5_3_rp
RD_5_4_rp
RD_5_4_rp
RD_5_6_rp
RD_5_6_rp
RD_6_1_rp

View on mounting side
Grid = 5 mm
Pin = Ø0,6 mm
Length = 4 mm

View on mounting side
Grid = 5 mm
Pin = 0,6 x 0,8  mm
Length = 3,5 mm

View on mounting side
Grid = 5 mm
Pin = Ø0,8 mm
Length = 4 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,8 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,7 x 0,7 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,7 x 0,7 mm
Length = 3,5 mm

 

 

 

 

 

 

Picture 7

Picture 8

Picture 9

Picture 10

RD_6_2_mm
RD_6_3_mm
RD_6_4_mm
RD_6_5_mm
RD_6_2_rp
RD_6_3_rp
RD_6_4_rp
RD_6_5_rp

View on mounting side
Grid = 2,5 mm
Pin = Ø0,8 mm
Length = 4 mm

View on mounting side
Grid = 5 mm
Pin = 0,6 x 0,8 mm
Length = 5 mm

View on mounting side
Grid = 5 mm
Pin = 0,6 x 0,8 mm
Length = 3,5 mm

View on mounting side
Grid = 5 mm
Pin = Ø0,8 mm
Length = 4 mm

 

 

 

 

 

 

Picture 11

Picture 12

Picture 13

RD_6_6_mm
RD_6_7_mm
RD_7_1_mm
RD_6_6_rp
RD_6_7_rp
RD_7_1_rp

View on mounting side
Grid = 5 mm
Pin = 0,6 x 0,8 mm
Length = 3,5 mm

View on mounting side
Grid = 5 mm
Pin = 0,7 x 0,7 mm
Length = 5 mm

View on mounting side
Grid = 5 mm
Pin = 0,7 x 0,7 mm
Length = 5 mm

 

 

 

 

 

 

Picture 14

Picture 40

Picture 41

RD_7_2_mm
RD_7_3_mm
RD_7_4_mm
RD_7_2_rp

View on mounting side
Grid = 5 mm
Pin = 0,6 x 0,8 mm
Length = 3,5 mm

 

 

 

 

 

 

Picture 15

Picture 16

Picture 17

Picture 18

Picture 19

Picture 20

RD_8_1_mm
RD_8_2_mm
RD_8_3_mm
RD_8_4_mm
RD_8_5_1_mm
RD_8_6_mm
RD_8_1_rp
RD_8_2_rp
RD_8_3_rp
RD_8_4_rp
RD_8_5_1_rp
RD_8_6_rp

View on mounting side
Grid = 2,54 mm
Pin = 0,5 x 0,5 mm
Length = 3,5 mm

View on mounting side
Grid = 5 mm
Pin = 0,6 x 0,8 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,75 x 0,75 mm
Length = 3,3 mm

View on mounting side
Grid = 2,5 mm
Pin = Ø0,8 mm
Length = 4 mm

View on mounting side
Grid = 2,5 mm
Pin = Ø0,8 mm
Length = 4 mm

View on mounting side
Grid = 2,5 mm
Pin = Ø0,8 mm
Length = 4 mm

 

 

 

 

 

 

Picture 21

Picture 22

Picture 23

Picture 24

Picture 25

RD_8_7_mm
RD_8_8_mm
RD_8_9_mm
RD_9_1_mm
RD_9_2_mm
RD_8_7_rp
RD_8_8_rp
RD_8_9_rp
RD_9_1_rp
RD_9_2_rp

View on mounting side
Grid = 2,5 mm
Pin = 0,75 x 0,75 mm
Lenth = 3,3 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,75 x 0,75 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = Ø0,8 mm
Length = 4 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,6 mm
Length = 5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,75 x 0,75 mm
Length = 3,5 mm

 

 

 

 

Picture 26

Picture 27

Picture 28

RD_9_3_mm
RD_9_4_mm
RD_9_5_mm
RD_9_3_rp
RD_9_4_rp
RD_9_5_rp

View on mounting side
Grid = 2,5 mm
Pin = Ø0,8 mm
Length = 4 mm

View on mounting side
Grid = 2,54 mm
Pin = 0,8 x 0,8 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,8 mm
Length = 5 mm

 

 

 

Picture 29

Picture 30

Picture 31

RD_9_6_mm
RD_10_1_mm
RD_10_2_mm
RD_9_6_rp
RD_10_1_rp
RD_10_2_rp

View on mounting side
Grid = 2,54 mm
Pin = 0,8 x 0,8 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,6 mm
Length = 3,5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,75 x 0,75 mm
Length = 4 mm

 

 

 

 

 

 

Picture 32

Picture 33

Picture 34

RD_10_3_mm
RD_10_4_mm
RD_10_5_mm
RD_10_3_rp
RD_10_4_rp
RD_10_5_rp

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,8 mm
Length = 5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,6 mm
Length = 5 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,6 mm
Length = 5 mm

 

 

 

 

 

 

Picture 35

Picture 36

Picture 37

RD_10_6_mm
RD_11_1_mm
RD_11_2_mm
RD_10_6_rp
RD_11_1_rp
RD_11_2_rp

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,6 mm
Length = 5 mm

View on mounting side
Grid = 2,54 mm
Pin = 0,8 x 0,8 mm
Length = 3,55 mm

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,8 mm
Length = 5 mm

 

 

 

 

 

 

Picture 38

Picture 39

RD_11_3_mm
RD_11_4_mm
RD_11_3_rp
RD_11_4_rp

View on mounting side
Grid = 2,5 mm
Pin = 0,6 x 0,8 mm
Length = 5 mm

View on mounting side


Fields of application


Filter and storage choke in switch mode power supplies
RFI chokes for DC supplied devices
EMC choke, PFC choke, reactance choke


Description


One- or two winding chokes with toroidal core made of pressed soft magnetic powder material. It is usable for frequencies up to 100 kHz. The toroidal core gives the ideal geometric shape for the magnetic flux, this results in a low magnetic stray field and low losses. The dimensions are determined by the energy E = 0,5 L I².
If there is forced cooling, smaller dimensions are possible. If there is only a bit of over temperature for the choke allowed, the dimensions will increase. The winding is constructed for low voltage and is wound with low stray field.


Table


Type

Current
[A]

No-load
inductance
[µH]

Rated
inductance
[µH]

Storage
energy
[mWs]

DC-resistance
mOhm

Version (see pictures)

Copper
weight
[g]

Total
weight
[g]

lying

standing

open

D

H

DR...7

0,63

340

240

0,1

300

4

23

146

10

3

9

DR...7

0,63

480

400

0,1

350

4,6,7

23,24

28

8

3

13

DR...7

0,63

860

700

0,1

500

4

23,24

19

9

4

18

DR...7

0,63

2100

1400

0,5

970

8,9,10

26,27,28

22

9

9

21

DR...7

1,00

350

280

0,2

200

4

23,24

19

9

4

11

DR...7

1,00

830

550

0,5

420

8,9,10

26,27,28

22

9

9

21

DR...7

1,00

2000

1200

1,3

680

11,12

31,32

26

11

15

37

DR...7

1,00

4200

2000

2,5

1100

11,12

31,32

27

12

23

47

DR...7

1,60

35

31

0,1

50

4,5,6,7

23,24

19

8

3

12

DR...7

1,60

185

140

0,3

90

4

23,24

20

9

5

18

DR...7

1,60

340

220

0,5

170

8,9,10

26,27,28

23

9

9

21

DR...7

1,60

860

500

1,3

290

11,12

31,32

26

12

16

38

DR...7

1,60

1550

900

2,6

410

11,12

31,33,34

29

15

22

64

DR...7

1,60

3900

2000

6,4

660

13,14

38

36

15

36

99

DR...7

2,00

120

90

0,3

70

8,9,10

26,27,28

22

9

6

18

DR...7

2,00

260

160

0,6

115

8,9,10

26,27,28

23

9

10

23

DR...7

2,00

390

250

1,0

145

11,12

31,32

25

11

13

34

DR...7

2,00

500

300

1,3

170

11,12

31,32

27

11

15

37

DR...7

2,00

810

500

2,0

210

11,12

31,33

28

14

18

59

DR...7

2,00

2000

1100

5,0

370

13,14

38

36

15

33

96

DR...7

2,00

2800

1700

10,0

590

40

39

41

15

52

136

DR...7

2,50

61

50

0,3

45

8,9,10

25,26,28

20

10

5

18

DR...7

2,50

140

90

0,5

75

8,9,10

26,28

22

10

8

20

DR...7

2,50

300

190

1,3

120

11,12

31,32

25

11

13

35

DR...7

2,50

990

550

3,1

200

13,14

36,37

28

18

21

75

DR...7

2,50

1900

900

7,8

390

13,14

38

39

15

42

105

DR...7

2,50

1700

1050

9,8

440

40

39

42

16

47

131

DR...7

3,15

48

35

0,2

30

8,9,10

26,27,28

22

8

5

16

DR...7

3,15

100

63

0,6

55

8,9,10

26,28

22

10

9

22

DR...7

3,15

195

120

1,2

80

11,12

31,32

26

12

14

36

DR...7

3,15

290

185

2,0

100

11,12

31,33,34

29

15

17

58

DR...7

3,15

480

290

3,1

125

13,14

36,37

29

18

22

75

DR...7

3,15

980

500

6,2

180

13,14

38

37

15

32

95

DR...7

3,15

1180

560

7,9

230

13,14

38

39

14

40

102

DR...7

3,15

1150

660

9,9

285

40

39

42

16

50

134

DR...7

4,00

28

22

0,3

15

8,9,10

26,27,28

22

8

5

17

DR...7

4,00

130

75

1,3

45

11,12

31,32

26

12

15

38

DR...7

4,00

180

115

2,0

55

11,12

31,33,34

29

15

19

61

DR...7

4,00

250

160

2,5

60

13,14

36,37

29

19

22

75

DR...7

4,00

300

180

3,2

70

13,14

36,37

29

19

24

79

DR...7

4,00

380

228

4,0

80

13,14

38

35

15

28

90

DR...7

4,00

720

350

8,0

130

13

38

40

15

45

108

DR...7

4,00

680

415

10,0

145

40

39

42

15

51

135

DR...7

4,00

1400

700

16,0

200

40

39

49

21

71

221

DR...7

5,00

18

14

0,3

10

8

26

22

9

6

17

DR...7

5,00

82

48

1,3

30

11,12

31,32

26

12

16

38

DR...7

5,00

190

115

3,1

45

13,14

36,37

29

19

25

79

DR...7

5,00

240

145

3,9

55

13,14

38

35

16

28

90

DR...7

5,00

460

220

7,9

85

13

38

40

15

46

110

DR...7

5,00

430

265

10,0

90

40

39

41

16

50

134

DR...7

5,00

890

440

16,6

125

40

39

47

21

70

220

DR...7

5,00

1000

480

20,0

150

41

39

49

21

72

235

DR...7

6,30

12

9

0,2

7

8,9,10

26,27,28

23

9

6

17

DR...7

6,30

26

16

0,6

11

8,9,10

26,27,28

23

9

9

21

DR...7

6,30

54

31

1,3

20

11,12

29,30,32

26

13

16

39

DR...7

6,30

72

48

2,0

24

11

31,33,34

29

16

20

62

DR...7

6,30

130

75

3,2

31

13,14

38

29

20

25

80

DR...7

6,30

190

108

5,0

39

13,14

38

36

16

32

95

DR...7

6,30

285

140

7,9

54

13,14

38

38

16

45

110

DR...7

6,30

270

165

9,9

61

40

39

41

16

51

135

DR...7

6,30

540

272

15,9

86

40

39

47

22

71

221

DR...7

6,30

640

300

19,8

97

40

39

47

22

80

231

DR...7

8,00

5,6

4,4

0,2

4

8,9,10

26,27,28

23

9

5

17

DR...7

8,00

13,5

8,8

0,5

7

8,9,10

26,27,28

23

9

8

20

DR...7

8,00

29

17

1,0

9

11,12

29,30,32

27

11

12

34

DR...7

8,00

72

40

3,2

20

13,14

34,36,37

30

17

26

69

DR...7

8,00

98

54

4,0

22

13,14

38

30

20

29

84

DR...7

8,00

175

85

8,0

35

13,14

38

39

16

46

110

DR...7

8,00

165

101

10,1

40

40

39

41

17

52

136

DR...7

8,00

300

144

12,8

47

40

39

43

20

61

170

DR...7

8,00

350

175

16,0

56

40

39

47

22

73

222

DR...7

8,00

400

189

20,2

63

40

39

47

22

82

233

DR...7

10,00

3,8

2,8

0,2

3

8,9,10

26,27,28

23

10

5

16

DR...7

10,00

8,9

5,5

0,5

4

8,9,10

26,27,28

23

10

8

20

DR...7

10,00

19,5

12

1,3

7

11,12

29,30,32

27

11

13

34

DR...7

10,00

45

25

3,2

13

13,14

34,36,37

30

17

25

68

DR...7

10,00

75

43

5,0

14

13,14

38

36

14

26

88

DR...7

10,00

110

56

8,0

24

13,14

38

39

17

44

108

DR...7

10,00

110

66

10,0

26

40

39

42

17

49

133

DR...7

10,00

200

100

15,8

36

40

39

48

23

68

217

DR...7

10,00

250

120

20,0

42

40

39

48

23

77

228

DR...7

10,00

280

120

20,0

63

40

39

48

23

24

50

DR...7

16,00

3,8

2,2

0,5

2

8,9,10

26,27,28

24

10

9

21

DR...7

16,00

7,2

4,7

1,3

3

11,12

31,32

28

12

15

37

DR...7

16,00

11

7,2

1,9

3

12

36,37

31

15

18

60

DR...7

16,00

17,5

10,6

2,6

4

13,14

36,37

31

19

21

75

DR...7

16,00

47

22

8,1

7

13

38

40

15

42

105

DR...7

16,00

72

35

12,8

10

40

38

44

19

56

164

DR...7

16,00

100

48

20,5

15

41

39

49

25

92

245

DR...7

20,00

2,1

1,32

0,5

1

8,10

26,27

25

11

9

22

DR...7

20,00

4,9

2,85

1,3

2

11,12

32,33

28

12

15

38

DR...7

20,00

11

6,5

3,2

3

13,14

36,37

31

16

24

67

DR...7

20,00

15

8,8

4,0

3

13,14

36,37

31

19

27

82

DR...7

20,00

23

12,7

6,2

4

13,14

38

38

16

39

100

DR...7

20,00

30

14

8,0

5

13

38

40

15

43

106

DR...7

20,00

55

28

16,0

8

41

39

49

21

69

218

DR...7

25,00

15

8

6,6

3

13,14

38

38

16

36

100

DR...7

25,00

17,5

10,2

9,7

3

40

39

43

16

49

133

DR...7

25,00

38

18,9

19,7

6

41

39

50

22

78

229

DR...7

25,00

68

32

31,3

6

41

39

52

23

88

295

DR...7

31,50

10

5,3

6,4

2

13,14

38

39

17

37

101

DR...7

31,50

11

6,7

10,4

2

40

39

44

17

52

136

DR...7

31,50

23,5

12

19,8

3

41

39

50

22

80

231

DR...7

40,00

6,6

3,3

6,4

1

13,14

38

39

17

38

102

DR...7

40,00

6,1

3,2

8,0

2

40

39

42

17

47

111

DR...7

40,00

15

7

16,0

2

41

39

51

23

73

223

DR...7

40,00

28,5

12,4

32,0

3

41

39

53

24

92

300

DR...7

50,00

1,7

1,1

3,1

0,5

13,14

36,37

34

18

28

71

DR...7

50,00

3,8

1,8

5,0

0,5

13

38

40

18

35

100

DR...7

50,00

3,8

1,9

6,3

0,5

13

38

40

18

39

105

DR...7

50,00

4,3

2,6

10,6

0,7

40

39

46

18

57

145

DR...7

50,00

8,2

3,8

12,5

0,7

40

39

47

22

64

175

DR...7

50,00

11

4,7

16,9

1

41

39

52

24

79

230

DR...7

60,00

1

0,8

3,6

0,5

41

39

44

18

32

95

DR...7

60,00

2,1

1,2

5,6

0,5

41

39

41

19

36

100

DR...7

60,00

2,6

1,75

9,0

0,5

40

39

46

19

50

135

DR...7

60,00

6,8

3

14,4

0,7

41

39

52

24

70

220

Technical changes and optimisation reserved. All details are guide values, variations are possible.

04/2013


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