Item

Frequency
(kHz)

Beaking Strengt (Qm)

Piezo-strain Coefficent (d33)pC/N

Dielectric
Loss
(tgδ(%))

Dielectric
Constant

Electric-Mechanical Coupling Coefficent

Kp(%)

Kt(%)

￠20*2

 28～35

 ≥1000

≥280

 ≤0.5

 1100±100

 ≥65

≥45

￠25*2

￠28*2

￠50*3.5

Shape

Electric-Mechanical Coupling Coefficent
(%)

Dielectric
Loss
(tgδ(%))

Dielectric
Constant

Temp Coeff of Frequency(Tkfr)

Dimensions
(mm)

Circular

Kp≥56.5

≤0.02

2100±30%

≤ 400ppm

￠5～￠100

Rectangle

K31≥32

≤0.03

5～150