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TDK TDK Electronics · TDK Europe

December 14, 2017

Piezo actuators: Miniaturized PowerHap™ 2.5G type with haptic feedback

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  • Compact dimensions of just 9 mm x 9 mm x 1.25 mm
  • Very large force of 4 N
  • High acceleration of 2.5 g
  • Large displacement of 35 µm

TDK Corporation has expanded its portfolio of PowerHap™ piezo actuators with haptic feedback with the new miniaturized 2.5G type, whose dimensions are a compact 9 mm x 9 mm x 1.25 mm. At the maximum operating voltage of 60 V the new actuator achieves an acceleration of 2.5 g of a 100 gram mass. It offers a maximum displacement of 35 µm or a large force of up to 4 N.

The new miniature type complements the existing 7G and 15G PowerHap types. With their dimensions of 12.7 mm x 12.7 mm x 1.9 mm and 26 mm x 26 mm x 2.4 mm, respectively, these actuators achieve an acceleration of 7 g and 15 g under a load of 100 grams. They also generate forces of up to 10 N (7G type) and 20 N (15G type). Both types are designed for a maximum operating voltage of 120 V and offer a displacement of up to 65 µm and 200 µm, respectively.

Compared with conventional electromagnetic solutions such as eccentric rotary motors (ERMs) and linear resonant actuators (LRAs), PowerHap actuators feature the highest acceleration and force, the lowest insertion height and the fastest response time of <1 ms, all with an extremely low energy consumption of 1 mJ to 8 mJ, depending on type. Moreover, PowerHap offers integrated sensor functionality in a single component.

PowerHap actuators are able to excite the entire stimulation range between 1 Hz and 1000 Hz and have no significant frequency or amplitude limitations. They therefore enable customized haptic feedback to key human mechanoreceptors, so that designers can custom develop high-definition haptic feedback profiles that users expect from cutting-edge HMIs. Applications for the piezo actuator with haptic feedback can be found, for example, in vehicles, smartphones and tablets, household appliances, ATMs and vending machines, game controllers, industrial equipment and medical devices.  

Main applications

  • Vehicles, smartphones and tablets, household appliances, ATMs and vending machines, game controllers, industrial equipment and medical devices

Main features and benefits

  • Very large forces of 4 N to 20 N
  • Large displacement of 35 µm to 200 µm
  • Acceleration of up to 15 g with a load of 100 grams
  • Extremely low insertion height of 1.25 mm to 2.4 mm
  • Fast response time of <1 ms
  • Low energy consumption per click of 1 mJ to 8 mJ

Key data

Max. voltage
[g] *
2.5G9 x 9 x 1.25602.5435
7G12.7 x 12.7 x 1.912071065
15G26 x 26 x 2.41201520200

* With a load of 100 grams

Further information on the products can be found under www.epcos.com/powerhap.



About TDK Corporation

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes passive components, such as ceramic, aluminum electrolytic and film capacitors, ferrites and inductors, high-frequency products, and piezo and protection components, as well as sensors and sensor systems and power supplies. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK's further main product groups include magnetic application products, energy devices, and flash memory application devices. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2017, TDK posted total sales of USD 10.5 billion and employed about 100,000 people worldwide.