Cores for Low Frequency Noise: TRM Series

“Mn” ferrite cores, suitable solutions for conductive and radiation noise in low frequency range

  • High Impedance noise filter for low frequency (kHz to MHz) range
  • Turning the cable around the core increases effectiveness by a power of 2 (N²)
  • Epoxy coated ferrite core has rounded corners to reduce the load on cable
  • Operating temperature -40 ~ 85 °C
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Cores for Low Frequency Noise: TRM Series
TRM Series - Dimension
Part No. A B C
TRM-16-8-16E-WE 17.0 7.1 16.9
TRM-20-10-10E-WE 21.0 9.1 10.9
TRM-25-15-12E-WE 26.0 14.1 12.9
TRM-31-20-15E-WE 32.1 19.0 15.9
TRM-38-19-13E-WE 39.2 17.9 14.0
TRM-47-27-15E-WE 48.5 25.7 16.3
Unit:mm
Part No. Impedance Ω/100MHz (1Turn)
TRM-16-8-16E-WE ≥70
TRM-20-10-10E-WE ≥35
TRM-25-15-12E-WE ≥35
TRM-31-20-15E-WE ≥30
TRM-38-19-13E-WE ≥35
TRM-47-27-15E-WE ≥25

Impedance vs Frequency Characteristics

Turn Colors
Impedance: TRM-16-8-16E-WE
Impedance: TRM-20-10-10E-WE
Impedance: TRM-25-15-12E-WE
Impedance: TRM-31-20-15E-WE
Impedance: TRM-38-19-13E-WE
Impedance: TRM-47-27-15E-WE

* Specifications and dimensions are subject to change without notice for product improvement.