Product category:
Circuit Protection Devices
News Release from: TDK Electronics Europe | Subject: 0201 type multilayer chip varistors
Edited by the Electronicstalk Editorial
Team on 14 October 2003
Multilayer chip varistor protects
portable devices
TDK has begun volume production of the industry's first 0201 type multilayer chip varistor.
TDK has begun volume production of the industry's first 0201 type multilayer chip varistor The new chip varistor is approximately one-fifth the volume and weight of 0402 type chip varistors enabling installation of the necessary number of varistors, even on small printed circuit boards
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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TDK's experience in the development of electronic materials has allowed it to reduce the volume of the varistor by 78% and the area by 64%.
The increased demand for smaller, lighter, and low power mobile devices has led to a need for semiconductor components that operate on lower voltages with higher degrees of integration.
However, with this progress, components become more susceptible to noise, and surges caused by static electricity.
Due to constant contact with end-users, surge protection on cell phones, PDAs, laptop computers, and digital cameras is essential.
When multilayer chip varistors are made smaller, the electrode area also becomes smaller, resulting in lower capacity to withstand surges, and as a result, it is necessary to make the varistor elements thinner to achieve the properties suitable for low voltage circuits, presenting a significant technological hurdle.
When the voltage impressed on multilayer chip varistors reaches a certain degree, current, which previously could not pass through, is suddenly able to pass, and they exhibit excellent inhibitive power against surges.
TDK used precise structure control technology to create fine, uniform crystal particles as well as multilayer technology that achieves the highest possible levels of precision to develop unique rare earth zinc oxide varistors.
The new 0201 type varistors will be used in IC circuit power supplies, reset circuits, and input and output terminals to prevent malfunctions of mobile devices as well as damage from static electricity.
These products are also completely lead-free.
The terminal electrodes are plated with nickel and tin, while the ground terminal has a coating of silver.
The new varistors feature excellent solder-wettability and outstanding solder heat resistance.
In addition to achieving the small 0201 size, they also provide stability with extremely small deterioration of properties even after impression by static electricity.
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