Date: 7th Jan 2010
Murata has commercialized 0603 size chip
Murata said it has commercialized 0603 size chip type ferrite
beads, BLM03AX, that reduce undesired noise radiation in
Murata has reduced DC resistance within a component by
approximately 50% by developing Murata's own new material
and introducing a new process to realize the world's smallest
DC resistance in the size category.
Murata has also reduced impedance variance when exposed
to environmental stress such as thermal shock and high temperature
load while increasing reliability over the previous model.
Chip ferrite beads are inserted into signal lines or power
lines as noise suppression components. When used for power
lines, DC resistance within the component results in a voltage
drop. Large DC resistance causes a voltage drop reducing
IC operation margin during low battery voltage. Making resistance
small will limit the level of voltage drop consequently
allowing the equipment to operate at lower battery voltage.
Therefore, in order to lengthen battery operation time,
components with small DC resistance must be made available.
BLM03AX is even smaller than the 1005 size (1.0x0.5mm)
model Murata has commercialized in January 2009.
Also BLM03AX comes in a wide range of impedance lineups
between 10 Ohm at 100MHz and 1,000 Ohm at100MHz at large
rated currents up to 1,000mA.
BLM03AX has impedance characteristics emerging at a low
frequency suitable for general signal lines and power lines
The suggested applications for the BLM03AX are Portable
information equipment such as note-size PCs, netbooks and
MIDs, Mobile phones, Digital still cameras, and portable
audio players terminology.
||10 Ohm (Typ.)
||0.05 Ohm Max.
||80 Ohm ±25%
||120 Ohm ±25%
||240 Ohm ±25%
||600 Ohm ±25%
||1,000 Ohm ±25%
Operating Temperature Range: -55 Deg C - +125 Deg C
Availability: 50 million units per month in December 2009
Price: Sample price at 5-yen/per unit
Patents: 4 patents pending