Piezo Actuator Stack General Specifications
Co-fired monolithic piezoelectric stacks are high quality products, high force density for strong, fast and precise actuation.
| Item | Specified Data | Conditions |
| Operating temperature | ー25 to +85°C |
When applied with a DC voltage: Ambient temperature |
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When driven by an AC voltage: Ambient temperature + temperature rise due to generated heat
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| Maximum voltage | 150VDC | Note: self-generated heat in case of dynamic operation |
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Displacement |
see part |
0 - 150 VDC unipolar |
| see part | -30 - 150 VDC semi-bipolar | |
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Generated force |
see part |
The force required for restricting the displacement to 0 when the maximum driving voltage is applied. |
| Capacitance |
f = 1kHz,V=1Vrms(<10 μ F) |
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| f = 120Hz,V=1Vrms(>10 μ F) | ||
| Capacitance tolerance | +/ー20 % | |
| Dissipation factor | 5% or less | |
| Insulation resistance | see part | Value obtained in 1 minute at 150 VDC |
| Resonance frequency | see part | With both ends of element in free state |
| Typical value of the element under our test conditions | ||
| Tensile strength | 4 × 1010 N/m2 |
Typical value of the element under our test conditions |
| Young's modulus | 4.4 × 1010 N/m2 |
Typical value of the element under our test conditions |
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| Temperature cycle test |
Displacement: Initial value ±20% Capacitance: Initial value ±30% Appearance: No noticeable defect |
Room temperature (3 min) –25°C (30 min.) |
| Room temperature (3 min) +85°C (30 min) | ||
| Repetition of 10 cycles of the above | ||
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Poission ratio
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0.3 |