3

Unit: mm

TRMH – Low frequency, high µ ferrite cores

Part No.

A

B

C

Impedance

Ω/1MHz (1 Turn)

TRMH-16-8-16E

16.9

7.2

16.8

≥18

TRMH-20-10-10E

21.0

9.2

10.9

≥11

TRMH-25-15-12E

25.9

14.1

12.8

≥9

TRMH-31-20-15E

32.1

19.0

15.9

≥9

TRMH-38-19-13E

39.1

18.0

13.9

≥11

TRMH-47-27-15E

48.3

26.0

15.9

≥10

TRMH-65-38-30E

67.3

36.6

31.1

≥12

TRMH-74-46-20E

75.76

44.22

21.0

≥6

TRMH-103-66-25E

105.6

63.1

26.9

≥6

TRMH-160-90-26E

165.1

87.9

28.1

≥6

− High impedance at less than 1MHz

− Increased impedance obtained with each turn around

the core

− Suitable for conducted emissions in the kHz range

− Operating temperature: -40 ~ 85°C

− High impedance noise filters for the low MHz range

− Turning the cable around the core increases

effectiveness by a power of 2 (N2)

− Operating temperature: -40 ~ 85°C

TRM – cores for low frequency range

Low Frequency Cores

Part No.

A

B

C

Impedance

Ω/10MHz (2 turns)

TRM-16-8-16E-WE

17.0

7.1

16.9

≥70

TRM-20-10-10E-WE

21.0

9.1

10.9

≥35

TRM-25-15-12E-WE

26.0

14.1

12.9

≥35

TRM-31-20-15E-WE

32.1

19.0

15.9

≥30

TRM-38-19-13E-WE

39.2

17.9

14.0

≥35

TRM-47-27-15E-WE

48.5

25.7

16.3

≥25

Unit: mm