Miniaturization leap by 80 percent; extremely low insertion height of

0.1 mm

50 times higher absorption capability for ESD pulses

Attractive alternative to TVS diodes

TDK Corporation presents a new series of EPCOS multilayer varistors of the

CeraDiode

family, which includes the most compact, flattest and most rugged varistor for the ESD protection of mobile

equipment. It has a footprint of only 0.47 mm x 0.47 mm at an extremely low profile of 0.1 mm in LGA packaging.

These new SMD protection components are available in EIA case sizes of 0402, 0201 and even smaller. This enables

the production of varistors that are thus about 80 percent smaller than their predecessors and simultaneously offer

extremely reliable ESD protection.

The new CeraDiodes have an ESD immunity of 15 kV or 25 kV, depending on the type, which more than satisfies the

higher requirements on the ESD protection of sensitive ICs. Their clamping voltage is only 70 V or 90 V at a pulse

voltage of 8 kV (IEC-61000-4-2), depending on the type. Thanks to their low capacitance, the signal integrity of high-

speed interfaces such as HDMI is not impaired.

TDK has achieved this new breakthrough in the miniaturization of its protection components by combining a new and

extremely efficient semiconductor material with its innovative micro core technology. The new ZnO material also

possesses significantly more grain boundaries per volume, which increases the ability of the components to absorb

ESD pulses by a factor of 50. These new micro core components can also be incorporated directly into 3D circuits and

modules. The further miniaturization, improved performance and low cost of the latest CeraDiodes makes them an ever

more attractive alternative to TVS diodes.

The main applications of the new CeraDiodes are in the RF components of mobile communications devices as well as

high-speed interfaces such as HDMI.

Main applications

Smartphones, tablets, LED lighting

Main features and benefits

Compact dimensions of 0402, 0201 and smaller

Low insertion height of 0.1 mm

High ESD immunity of up to 25 kV

Terminal voltages of less than 100 V at 8 kV (IEC-61000-4-2)

Multilayer varistors November 2013

Ultra-flat and compact varistors

for ESD protection

Products & Technologies