Jan 6, 2010
Murata Manufacturing Co., Ltd.
President/ Statutory Representative Director: Tsuneo Murata
Murata Manufacturing Co., Ltd. has commercialized 0603 size chip type ferrite beads, BLM03AX, that reduce undesired noise radiation in electronic equipment.
We have 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. Reduction of DC current by 50% translates to 50% reduction in power consumption of the component, and lengthens battery operation time in mobile equipment.
We have further succeeded in reducing impedance variance when exposed to environmental stress such as thermal shock and high temperature load while increasing reliability over the previous model.
More and more electronic equipment are being made smaller and portable. This trend, in turn, necessitates longer battery operation time.
Chip ferrite beads are inserted into signal lines or power lines as noise suppression components. When used for power lines, DC resistance*1 within the component results in a voltage drop*2. Large DC resistance causes a significant 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.
To this end, we have commercialized 0603 size BLM03AX with significantly smaller DC resistance in spite of its compact size. BLM03AX is even smaller than the 1005 size (1.0x0.5mm) model we commercialized in January 2009. BLM03AX incorporates Murata’s own newly developed material and improved process to achieve approximately 50% lower DC resistance compared with the previous model in spite of the small size. This model will contribute to lengthening battery operation time in mobile equipment.
Also BLM03AX comes in a wide range of impedance lineups between 10Ω@100MHz and 1,000Ω@100MHz at very large rated currents up to 1,000mA.
*1 DC resistance: Resistance component within an electronic component, caused by resistance from the coil pattern
*2 Voltage drop: Differential voltage occurring between the inlet and the outlet of a component caused by the current flowing through the resistance portion of the component
BLM03AX (1) SN1
(A three digit number representing impedance at 100MHz will be inserted in place of (1).)
| Part Number | Impedance @100MHz | Rated Current | DC Resistance |
|---|---|---|---|
| BLM03AX100SN1 | 10Ω (Typ.) | 1,000mA | 0.05Ω Max. |
| BLM03AX800SN1 | 80Ω±25% | 500mA | 0.18 Max. |
| BLM03AX121SN1 | 120Ω±25% | 450mA | 0.23 Max. |
| BLM03AX241SN1 | 240Ω±25% | 350mA | 0.38 Max. |
| BLM03AX601SN1 | 600Ω±25% | 250mA | 0.85 Max. |
| BLM03AX102SN1 | 1,000Ω±25% | 200mA | 1.25 Max. |
Operating Temperature Range: -55℃ - +125℃
50 million units per month in December 2009
5 yen/per unit
4 patents pending
This is a PDF file. Adobe Reader is required to view, print, or download this file.
This document file is in RSS (XML) format. An "RSS reader" is required to read this file.
