TRMB Chip Multilayer Bead Inductors
TOKEN
Chip Bead
Multilayer Inductors
Chip multilayer bead for High Speed Signals Use (TRMB)
Preview
About using multilayer chips:
- Chip Beads, perform the function of removing RF energy that exists within a transmission line structure
(Printed circuit board tracking). This RF energy is an AC sine wave component that co-exists with the DC
voltage level of the transmitted signal. The DC component is the intended signal of interest whereas RF
energy will propagate down the trace and radiate as EMI.
- Beads perform the function of being a high frequency resistor (attenuator) allowing DC energy to pass
through whilst removing AC energy.
- Chip Beads consist of a soft ferrite material which responds to RF energy. This material contains high
resistivity in monolithic form. Eddy current losses are inversely proportional to resistivity. These losses
increase with the square of the frequency. The eddy currents are the RF energy that travels through the
device.
- Hard ferrite is associated with a permanent magnetic field, its polarities become fixed as North and South.
Soft ferrite material will change its impedance value based on the frequency that the bead presents to the
circuit and does not permanently retain the magnetic field.
Advantages of using MultiLayer Chips:
- Suitable to high density printed circuit boards.
- Perfect shape for automatic mounting, with no directionality.
- Monolithic inorganic material construction for high reliability.
- Outstanding soldering heat resistance. Both flow and reflow soldering methods can be used.
- Small size chips generate high impedance. Minimum floating capacity and excellent high frequency
characteristics.
A selection guide to miniature ferrite chip beads:
- The TRMB100505, TRMB160808, TRMB201209, and TRMB321611 Series covers a wide range of
impedance characteristics. It is designed to prevent electromagnetic interference.
- The TRMB100505-YTRQN060, TRMB160808-YTRQN060, TRMB201209-YTRQN050, and
TRMB321611-YTRQN150 Series can minimize attenuation of the signal wave form due to its sharp
impedance characteristics. Those are designed for high speed applications.
Those series generates an impedance down to relatively low frequency.
- The TRMB100505-YTRYN060, TRMB100505-YTRQN060, TRMB160808-YTRYN060,
TRMB160808-YTRQN060, TRMB321611-YTRYN080, and TRMB201209-YTRQN050 Series can
be used in high current circuits due to its low DC resistance.
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