Jiakang Piezo Bimorphs
The piezoelectric bimorph, which is made up of two single chips and one plate, causes displacement or deformation when an electrical signal is applied, resulting in an electrical signal. As a result, it has a wide range of applications. Products include jacquard combs, needle selectors for textile machines, piezoelectric flow valves for automobiles, medical equipment (e.g. insulin pump, collagen enhancer), small-scale piezoelectric pumps, energy-harvesting devices, blind braille, and more.
Main Parameters
| Part Number | HTZ |
| Size | 10~60(L)x2~20(W)x0.5~0.9(T)mm |
| Dielectric Loss tg | ≤3.0% |
| Relative Dielectric Constantε33T/ε0 | 780×10, 850×10 |
| Recommended Material | P-666, P-676 |
Main Materials
| Electrical Data | Symbol | Main Materials | ||||||||||||||
| P-659 | P-660 | P-663 | P-664 | P-666 | P-667 | P-668 | P-669 | P-672 | P-673 | P-676 | P-678 | P-679 | P-690 | |||
| Piezo-electric coupling coefficient | kp | 0.58 | 0.70 | 0.67 | 0.67 | 0.78 | 0.10 | 0.68 | 0.62 | 0.70 | 0.68 | 0.7 | 0.72 | 0.65 | 0.74 | |
| k31 | 0.32 | 0.39 | 0.38 | 0.37 | 0.42 | 0.39 | 0.35 | 0.41 | 0.39 | 0.45 | 0.42 | 0.38 | 0.40 | |||
| k33 | 0.60 | 0.73 | 0.70 | 0.70 | 0.78 | 0.70 | 0.68 | 0.72 | 0.70 | 0.80 | 0.72 | 0.70 | 0.75 | |||
| kt | 0.42 | 0.46 | 0.45 | 0.45 | 0.50 | 0.45 | 0.46 | 0.44 | 0.46 | 0.46 | 0.50 | 0.47 | 0.46 | 0.48 | ||
| Relative dielectric constant | εT33 / ε0 | 1100 | 3200 | 2200 | 2800 | 4500 | 180 | 2300 | 1400 | 3400 | 2200 | 6000 | 2750 | 1600 | 3800 | |
| Piezo-electric charge constant |
d33×10-12C/N |
280 | 700 | 400 | 480 | 780 | 70 | 430 | 250 | 600 | 430 | 850 | 540 | 320 | 710 | |
|
d31×10-12C/N |
-120 | -350 | -200 | -350 | -230 | -130 | -280 | -230 | -420 | -260 | -150 | -360 | ||||
| Mechanical quality factor | Qm | 100 | 60 | 80 | 500 | 60 | 2500 | 90 | 1000 | 80 | 90 | 60 | 80 | 1000 | 70 | |
| Frequency constant |
fr·d kHz·cm |
230 | 190 | 200 | 220 | 180 | 200 | 230 | 190 | 200 | 180 | 190 | 230 | 190 | ||
|
fr·t kHz·cm |
210 | 200 | 200 | 225 | 200 | 225 | 200 | 200 | ||||||||
| Temp charac-teristics |
| TKfr | (-20℃~80℃) |
100 | 260 | 300 | 120 | 400 | 30 | 150 | 100 | 300 | 100 | 400 | 200 | 100 | 260 | |
|
| TKCT | (-20℃~80℃) |
1500 | 4500 | 5000 | 2500 | 6000 | 1800 | 1500 | 4000 | 2000 | 6000 | 3000 | 1500 | 4000 | |||
| Curie Temp. |
Tc
|
320 | 220 | 220 | 230 | 180 | 450 | 355 | 340 | 230 | 325 | 140 | 280 | 330 | 210 | |
| Dielectric loss |
tgδ（%）
|
1.20 | 1.80 | 2.00 | 0.50 | 2.60 | 0.70 | 2.00 | 0.30 | 2.30 | 2.00 | 2.60 | 1.50 | 0.40 | 1.80 | |
| Dielectric loss | tgδ（400V/mm，%） | 1.00 | 1.00 | |||||||||||||