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
		When driven by an AC voltage: Ambient temperature + temperature rise due to generated heat
Maximum voltage	150VDC	Note: self-generated heat in case of dynamic operation

Displacement	see part	0 - 150 VDC unipolar

	see part	-30 - 150 VDC semi-bipolar
Generated force	see part	The force required for restricting the displacement to 0 when the maximum driving voltage is applied.

Capacitance	see part	f = 1kHz,V=1Vrms(<10 μ F)
		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

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

Poission ratio	0.3