Piezoelectric Devices
NIKKO’s piezoelectric devices are ideal for piezoelectric actuators that generate voltage-controlled micro-vibrations for high-precision positioning controllers.

Features
NIKKO’s piezoelectric devices are ideal for piezoelectric actuators that generate voltage-controlled micro-vibrations for high-precision positioning controllers.
Thin Multilayer Devices – Features of the multilayer structure are
1) Larger displacement amount;
2) Fast response time;
3) Lower input voltage.
NIKKO’s piezoelectric devices are custom designed for the application using 3 types of piezoelectric material and can accommodate various shapes and dimensions. All products are custom designed, no standard products.
Material Characteristics
| ITEM | NP-6 | NP-7 | NP-T1 | ||
|---|---|---|---|---|---|
| DIELECTRIC CONSTANT | ε33T/ε0 | ― | 1800 | 5800 | 2700 |
| ELECTROMECHANICAL COUPLING COEFFICIENT | kr | % | 57 | 64 | 66 |
| k31 | 33 | 37 | 38 | ||
| k33 | 69 | 77 | 76 | ||
| PIEZOELECTRIC STRAIN COEFFICIENT | d31 | ×10-12m/V | -141 | -332 | -236 |
| d33 | 353 | 847 | 558 | ||
| PIEZOELECTRIC ELECTRIC FIELD COEFFICIENT | g31 | ×10-3m/V | -10 | -7 | -10 |
| g33 | 22 | 17 | 23 | ||
| MECHNICAL QUALITY COEFFICIANT | Qm | ― | 1400 | 60 | 100 |
| YOUNG MODULUS | Y11E | ×1010N/m2 | 8.5 | 6.4 | 6.3 |
| Y33E | 6.0 | 4.2 | 4.4 | ||
| DIELECTRIC LOSS | tanδ | % | 0.5 | 2.0 | 1.2 |
| DENSITY | ρ | ×103kg/m3 | 7.9 | 7.8 | 7.9 |
| POISON COEFFICIENT | σ | ― | 0.33 | 0.33 | 0.32 |
| ELASTIC COMPLIANCE CONSTANTS | S11 E | ×10-12m2/N | 11.8 | 15.7 | 16.0 |
| S33 E | 16.8 | 23.7 | 22.8 | ||
| CURIE TEMPERATURE | Tc | ℃ | 280 | 160 | 305 |
| FEATURES | HIGH Qm; USED AT RESONANCE; HARD MATERIAL | HIGH d33; LARGE DISPLACEMENT; SOFT MATERIAL | HIGH TC; IN BETWEEN SOFT/HARD MATERIAL | ||
Design Guidelines
| ITEM | STANDARD | ||
|---|---|---|---|
| MAX DIMENSIONS | mm | 80×80 | |
| THICKNESS | mm | ≦30 | |
| LAYER THIVKNESS | μm | 13~ | |
| VIA DIAMETER | mm | 0.1 | 0.15 |
| TERMINAL MATERIAL | ― | silver | |
Catalog Download
Product Use Cases
- Piezoelectric speakers
- HAPTICS sensors
- Autofocus actuators
- Ultrasonic motors