微機(jī)械簧片開關(guān)為許多MEMS應(yīng)用提供了新的解決方案

　　微機(jī)械簧片開關(guān)為許多MEMS應(yīng)用提供了新的解決方案。

　　一個(gè)微型開關(guān)使范圍廣泛的各種應(yīng)用需要高可靠性，體積小，成本低。

　　微細(xì)加工技術(shù)，簡單地說，是利用半導(dǎo)體制造設(shè)備，以這樣的方式，創(chuàng)造微機(jī)械系統(tǒng)，服務(wù)于特定的目的。該公司的目標(biāo)是開發(fā)一個(gè)小型的，密封的簧片開關(guān)，就像大功能，標(biāo)準(zhǔn)密封簧片開關(guān)。

　　簧片開關(guān)的基本臨界要求是當(dāng)觸點(diǎn)接近足夠強(qiáng)度的磁場時(shí)，觸點(diǎn)必須閉合，當(dāng)開關(guān)處于關(guān)閉狀態(tài)或打開狀態(tài)時(shí)，它們必須產(chǎn)生零功率。該已經(jīng)開發(fā)出一種超小型，密封簧片開關(guān)與瑞士斯沃琪集團(tuán)合作。瑞士斯沃琪集團(tuán)以外，梅代爾是全球獨(dú)家營銷機(jī)構(gòu)為微小型簧片開關(guān)。

　　By definition， a reed switch is a small， electromechanical device that contains one or more ferromagnetic reeds hermetically sealed in a glass envelope. When the reed switch is brought into a magnetic field， the reeds close， creating a switching function. A typical reed switch is shown in Figure 1. The nickel/iron base metals are relatively soft and would not be good choices for use in a reed switch. This is because high switching loads initiate massive metal transfer， causing the contacts to become stuck in the closed position. However， the switch‘s ferromagnetic properties are essential for proper magnetic actuation. A more preferable manufacturing option is the use of a hard metal at the switching contact surface. Typically， rhodium and/or ruthenium have been used adding dramatically longer life to the reed switch. However， whether one is plating or sputtering the hard metal layer to the ferromagnetic leads， a transition layer is needed to insure that all the metals metallurgically bond to each other. Gold， copper， and tungsten are often used as transition layers.