Piezoelectric Diaphragms, Siren Diaphragms
Established in 1998, DSW International has been a trusted leader in developing and manufacturing high-quality piezo products, including piezoelectric diaphragms, piezo alarms, piezo sirens, sounders, piezo screamers, and piezo transducers. With over two decades of experience, we pride ourselves on delivering innovative solutions tailored to diverse industrial and commercial applications, ensuring precision, reliability, and performance.
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A: External Drive Type
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B: Self-Drive Type
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| PART NO | Fr(KHz) | Zr(MAX) | Cp(±30%nf) | D (MM) | d (MM) | T (MM) | t (MM) |
| FT-20T-6.7B1 | 6.7 +/-0.5 | 200 | 14 | 20 | 14.7 | 0.45 | 0.16 |
| FT-20T-6.3A1 | 6.3+/-0.2 | 200 | 14 | 20 | 15 | 0.4 | 0.16 |
| MFT-27T-4.0A1 | 4.0+/-.5 | 300 | 25 | 27 | 20 | 0.43 | 0.21 |
| MFT-27T-3.9A1 | 3.9+/-0.5KHz | 200 | 25 | 27 | 20 | 0.48 | 0.2 |
| FT-27T-2.5A1 | 2.5 +/-0.5 | 250 | 45 | 27 | 20 | 0.24 | 0.12 |
| FT-27T-2.5A21 | 2.5+/-0.3 | 250 | 45 | 27 | 20 | 0.22 | 0.09 |
| FT-35T-2.8A1 | 2.8 +/-0.3 | 200 | 24 | 35 | 25 | 0.55 | 0.3 |
| FT-35T-2.8B1 | 2.8 +/-0.5 | 200 | 24 | 35 | 25 | 0.55 | 0.3 |
| FT-35T-3.1A1 | 3.1 +/- 0.2 | 200 | 30 | 35 | 25 | 0.3 | 0.3 |
| MFT-35G-3.4A1 | 3.4 +/- 0.5 | 250 | 32 | 35 | 25 | 0.58 | 0.32 |
| FT-41T-2.8A1 | 2.8 +/- 0.2 | 300 | 66 | 41 | 25 | 0.25 | 0.12 |
| FT-50T-1.9A1 | 1.9 +/- 0.5 | 300 | 66 | 50 | 25 | 0.23 | 0.1 |
| FT-50T-3.0A1 | 3.3+/- 0.3 | 300 | 35 | 50 | 25 | 0.45 | 0.22 |
| FT-50T-1.1A | 1.1 +/- 0.5 | 800 | 60 | 50 | 30 | 0.48 | 0.22 |
| FT-30.5T-1.6A1 | 1.6+/- 0.5 | 500 | 45 | 30.5 | 20 | 0.22 | 0.1 |
| FT-30.5T-3.0A1 | 3.0 +/- 0.5 | 400 | 22 | 30.5 | 20 | 0.48 | 0.23 |
| FT-24T-3.0A1 | 3.0+/- 0.5 | 200 | 45 | 24 | 20 | 0.22 | 0.1 |
| FT-24T-5.6A1 | 5.6 +/- 0.5 | 400 | 22 | 24 | 20 | 0.48 | 0.23 |
| HFT-50T-3.0A | 3.0+/- .3 | 300 | 45 | 50 | 25 | 0.43 | 0.2 |
| FT-41G-3.0A1 | 3.0 +/- 0.4 | 500 | 66 | 41 | 25 | 0.24 | 0.11 |
| FT-27T-4.1B1 | 4.1 +/- 0.3 | 200 | 25 | 27 | 20 | 0.45 | 0.23 |
What Are Piezoelectric Diaphragms?
These components consist of a piezoelectric ceramic disc bonded to a brass or nickel alloy plate, vibrating when exposed to AC audio signals. Applications range from alarms and buzzers to ultrasonic devices and industrial sirens.
Product Highlights
- Material Options: Brass or nickel alloy for optimal durability.
- Frequency Range: From 1.1 to 6.7 kHz, ensuring broad application compatibility.
- Custom Solutions: Tailored designs to suit diverse industrial requirements.
For detailed specifications or to explore customization options, visit our catalogue or contact us directly.
Horn & Siren Diaphragm |
| Established in 1998, DSW International specializes in marketing and selling horn and siren diaphragms, which have been used and tested in Ningbo City Quality Lab many times. | ||||||
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Siren Diaphragm Series
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Siren Diaphragm
| PART NO | Power | Inner Dia. | Outer Diameter | Dome High (0.1) | DC. Resistance (ohm) |
| EH5-1A | 5W | 25.1 | 59 | 7.8 | 6 OR 7 |
| EH5-4A | 5W | 25.1 | 54 | 7.8 | 6 OR 7 |
| EH5-4 | 5W | 25.1 | 54 | 7.8 | 3.1 OR 3.5 |
| EH10-1A | 10W | 37.5 | 74 | 10 | 6.7 OR 7.4 |
| EH12.5-1 | 12.5W | 37.5 | 74 | 10 | 6.7 OR 7.4 |
| EH15-2B | 15W | 41.8 | 75 | 11.5 | 12 OR 13 |
| EH25-8A | 25W | 51.3 | 90 | -4.2 | 6 TO 6.5 |
| EH15-2B | 15W | 41.8 | 75 | 11.5 | 12 OR 13 |
| EH25-9 | 25W | 51.3 | 90 | -4.2 | 12.5 OR 13.5 |
| EH25-19B | 25W | 51.3 | 90 | -4.2 | 12.5 TO 13.5 |
| EH25-15B | 25W | 51.3 | 90 | -4.2 | 12.5 TO 13.5 |
| EHT20-1B | 40W | 71.4 | 112 | 18.8 | 12.2 TO 12.8 |
| EHC50-1 | 50W | 73.4 | 114 | 2 | 10.5 TO 11 |
| 462 | 20W | 46.2 | 64.7 | / | 5.8 TO 6.5 |
| EH250-2B | 100W | 73.4 | 118 | 18 | 10 TO 10.5 |
| EH100-1B | 100W | 79.8 | 119 | 22.4 | 11.8 TO 12.2 |
| EH100-3B | 100W | 100.3 | 142 | 24.7 | 12.1 TO 12.7 |
| EHC3-1A | 3W | 25.1 | 59 | 7.8 | 6 TO 7 |
| EHC10-1A | 10W | 37.5 | 74 | 10 | 6.7 TO 7.4 |
| EHC15-1B | 15W | 37.5 | 64 | 10 | 13-13.5 |
| ETH5-1 | 5W | 37.5 | 64 | 10 | 13-13.5 |
| EH5-1C | 5W | 25 | 59 | 7.8 | 27.5-29.5 |
Siren Diaphragm
| PART NO | Power | Inner Dia. | Outer Diameter | Dome High (0.1) | DC. Resistance (ohm) | Diagram |
| S50 | 15W | 25.5 | 52.5 | 6.3 | 3.4-3.8 6.1-6.7 | 2-2 |
| S350 | 15W | 25.5 | 52.5 | 6.3 | 3.4-3.8 6.1-6.7 | 2-2 |
| S108 | 15W | 25.5 | 57 | 6.3 | 3.4-3.8 4.8-4.2 5.95-5.45 7.6-8.4 | 2-2 |
| S105 | 15W | 18.5 | 40 | 4.1 | 7.6-8.4 11.4-12.6 | 2-3 |
| S250 | 15W | 25.5 | 40/42 | 7.2 | 3.4-3.8 4.95-5.45 11.4-12.6 | 2-4 |
| S204 | 20W | 20.4 | 40/42 | 5.2 | 0.8-1.2 1.7-2 | 2-2 |
| S508 | 25W | 33.5 | 53.2?.1 | 10.7 | 6.1-6.7 | 2-1 |
| S711 | 40W | 38.5 | 68 | 9.9 | 6.1-6.7 | 2-1 |
| S400 | 40W | 38.5 | 67 | 9.9 | 6.1-6.7 | 2-1 |
| S377 | 40W | 37.7 | 60 | 9.5 | 3.4-3.8 6.1-6.7 | 2-1 |
| S20-1A | 20W | 25.1 | 54 | 7.8 | 6-7 | 2-1 |
| S20-1 | 20W | 25.1 | 54 | 7.8 | 3.1-3.5 | 2-1 |
| S85-1 | 85W | 51.3 | 90 | 16 | 6.3-6.7 11.8-12.5 | 2-1 |
| S85-2 | 85W | 56.3 | 96 | 16.8 | 6.3-6.7 11.8-12.5 | 2-1 |
| S85-3 | 85W | 58.5 | 105 | 17 | 6.3-6.7 11.8-12.5 | 2-2 |
| S100-2 | 100W | 66 | 105.5 | 17.2 | 4.2-4.51 2.5-13 | 2-2 |
| S100-3 | 100W | 66 | 108 | 17.2 | 5.4-5.8 | 2-2 |
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