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| Model No.︰ | semispherical |
| Brand Name︰ | MQ |
| Country of Origin︰ | China |
| Unit Price︰ | - |
| Minimum Order︰ | - |
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| Type & spec |
Dimensions（mm）: |
Relevant piezoelectric parameters |
| Diameter× Small hole × Thickness |
| External radius |
Small hole |
Wall thickness |
f（kHz） |
Kr |
C (nF) |
| PZT-51 |
PZT-44 |
PZT-81 |
| SR5 |
SR5 |
Φ2 |
0.8 |
195 |
＞0.5 |
3.3 |
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| SR7.5 |
SR7.5 |
Φ3 |
0.8 |
127 |
＞0.5 |
7.7 |
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| SR10 |
SR10 |
Φ4 |
0.9 |
95 |
＞0.5 |
12 |
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| SR12.5 |
SR12.5 |
Φ4 |
1 |
76 |
＞0.5 |
17.3 |
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| SR15 |
SR15 |
Φ4 |
1.1 |
65 |
＞0.5 |
23.2 |
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| SR17.5 |
SR17.5 |
Φ5 |
1.1 |
52.5 |
＞0.5 |
32 |
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| SR20 |
SR20 |
Φ6 |
1.2 |
48.2 |
＞0.5 |
38.2 |
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| SR25 |
SR25 |
Φ8 |
2.5 |
46 |
＞0.45 |
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16.5 |
13.1 |
| SR30 |
SR30 |
Φ8 |
2.5 |
38.3 |
＞0.45 |
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23.6 |
18.7 |
| SR37.5 |
SR37.5 |
Φ10 |
3 |
31 |
＞0.45 |
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29.5 |
23.4 |
| SR40 |
SR40 |
Φ10 |
3 |
23 |
＞0.45 |
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35.5 |
28 |
| SR50 |
SR50 |
Φ10 |
3 |
22.7 |
＞0.45 |
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56.7 |
45 |
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