Japan's listed companies' press release portal website
August 7, 2012
Murata Manufacturing Co., Ltd.
President/Statutory Representative Director: Tsuneo Murata
Murata Manufacturing Co., Ltd. is proud to announce that it has now commercialized chip inductors with an inductance of 270 nH — the largest in the industry for the 0603 size. These inductors are optimal for use in high-frequency circuits in smartphones, mobile phones and other small mobile devices. Among our ultracompact 0603-size (0.6 x 0.3 x 0.3mm) film-type high-frequency chip inductors,*1 in addition to the previously available 0.6-120 nH products, we have increased the inductance so that our lineup now includes products that are compatible with inductances from 150-270 nH (LQP03TN_02 series) . Mass production commenced in August.
As smartphones and other compact mobile devices come to support multiple frequencies, and have more and more functions that have become more sophisticated, a greater number of parts are being mounted. Yet these mobile devices are becoming smaller and smaller, raising the need for even smaller and thinner chip inductors. With this background, a major challenge has been to achieve high inductance while reducing the size of parts.
By applying Murata's unique microfabrication technology and revising the internal structure, we have been able to form optimal coils for the interior to achieve the world's highest inductance for the ultra-compact 0603 size while maintaining world class Q.*2 Up until now, Murata's 0603-size high-frequency chip inductors could only achieve inductance values of 0.6-120 nH. We have now increased this to 150-270 nH, thereby increasing the degree of freedom in circuit design. The inductance deviation is ±5%. Going forward, we will continue to decrease this deviation while simultaneously increasing the inductance values.
This product does not use any substances that are restricted by the RoHS directive.*3
| Part no. | Induc tance (nH) |
Devi ation |
Q (min) |
Measure ment frequency (MHz) |
DC resistance (Ω) (Typ) |
Rated current (mA) |
Self- resonant frequency (GHz) (Min) |
|---|---|---|---|---|---|---|---|
| LQP03TNR15J02 | 150 | ±5% | 5 | 100 | 9 | 80 | 650 |
| LQP03TNR18J02 | 180 | 5 | 11 | 70 | 600 | ||
| LQP03TNR22J02 | 220 | 5 | 13 | 60 | 480 | ||
| LQP03TNR27J02 | 270 | 5 | 15 | 60 | 450 |
Mass production commenced in August at Fukui Murata Manufacturing Co., Ltd.
4 yen/piece
| *1 Inductor: | Together with capacitors and resistors, they are basic components in electronic circuits, and are also known as coils. In terms of their main applications, they can be divided into two categories: signal-type inductors and power supply-type inductors. "High-frequency inductors" belong to the signal-type category and are inductors that are used especially in high-frequency circuits, for example. In circuits that convey electrical signals, they are mainly used for frequency matching and as filters. Power supply-type inductors play noise suppression, smoothing and other roles in circuits that supply power to semiconductors. |
|---|---|
| *2 Q: | "Q" refers to the quality factor (or Q factor) . It is a measure of the sharpness of resonance. The higher this factor, the lower the loss in the high-frequency regions, and the better the inductor. |
| *3 RoHS Directive: | A directive that restricts the use of lead, cadmium, mercury, hexavalent chromium, PBB and PBDE. |
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