Disc Benders
(Catalog No. 20-)
- clear sound
- high sound pressure
- low power consumption
- small and lightweight
- 12 mm to 50 mm diameter
- single PZT layer or two PZT layers
- low cost
- custom design capability
- competitive pricing
- fast delivery
Typical Applications
- household appliance alarms and warning signals
- watch alarms
- smoke detectors
- keyboards / push-button devices
- buzzers and speakers
- toys / games
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Custom Design and Engineering Services
We can design and produce disc benders for unique requirements.
If the design you need is not listed here, please contact an
APCI representative to discuss your specifications.
Construction Options
Electrode Options
Standard Disc Benders
Single PZT layer / solid electrode or two PZT layers / solid
electrode. Additional data available on request.
Other units are available on request - please inquire.
New Single PZT Layer / Solid Electrode
Diameter
of
Metal Disc
(mm) |
Total
Thickness
(mm) |
Resonance
Frequency
(kHz) |
Impedance
(maximum)
( ) |
Capacitance
(pF at 1 kHz)
(±30%) |
APCI
Catalog
No. |
| FT-10.5T-9.0A1 |
| 10.5 |
0.14 |
9.0
±0.5 |
500 |
7500 |
20-1200 |
| MFT-12T-9.2A1 |
| 12 |
0.23 |
9.2
±1.0 |
550 |
10,000 |
20-1205 |
| MFT-15T-6.7A1 |
| 15 |
0.23 |
6.7
±0.5 |
500 |
14,000 |
20-1210 |
| MFT-20T-3.0A1 |
| 20 |
0.23 |
3.0
±0.5 |
300 |
25,000 |
20-1215 |
| FT-35T-2.8A1 |
| 35 |
0.55 |
2.8
±0.3 |
200 |
24,000 |
20-1225 |
| MFT-41T-1.0A1 |
| 41 |
0.23 |
1.0
±0.5 |
1000 |
66,000 |
20-1230 |
| MFT-50T-1.7A1 |
| 50 |
0.23 |
1.7
±0.5 |
300 |
80,000 |
20-1235 |
| FT-23.5T-5.1AS |
| 23.5 |
0.42 |
4.0
±0.5 |
|
|
20-1250 |
| FT-27T-3.9A1 |
| 27 |
0.45 |
3.9
±0.5 |
250 |
24,000 |
20-1240 |
| FT-32G-2.4AS |
| 32 |
0.43 |
2.4
±0.3 |
|
|
20-1255 |
| FT-20T-3.6A1 |
| 20 |
0.23 |
3.6
±0.5 |
300 |
25,000 |
20-1245 |
Input
voltage (Vp-p max): 30.
Single PZT Layer / Solid Electrode
Diameter
of
Metal Disc
(mm) |
Total
Thickness
(mm) |
Resonance
Frequency
(kHz) |
Impedance
(maximum)
() |
Capacitance
(pF at 1 kHz)
(±30%) |
APCI
Catalog
No. |
| 2-129511
(FTBD-12T-9.5A1) |
| 12 |
0.22 |
9.5
±1.0 |
1000 |
8000 |
20-1005 |
| 2-156011
(FTBD-15T-6.0A1) |
| 15 |
0.22 |
6.0
±1.0 |
500 |
14,000 |
20-1010 |
| 2-203911
(FTBD-20T-3.9A1) |
| 20 |
0.22 |
3.9
±0.5 |
300 |
25,000 |
20-1015 |
| 2-214011
(FTBD-21T-4.0A1) |
| 21 |
0.22 |
4.0
±0.5 |
800 |
17,000 |
20-1025 |
| 2-273811
(FT-27T-3.8A1) |
| 27 |
0.45 |
3.8
±0.5 |
300 |
25,000 |
20-1035 |
| 2-352611
(FT-35T-2.6A1) |
| 35 |
0.42 |
2.6
±0.5 |
300 |
30,000 |
20-1050 |
| 2-411011
(FTBD-41T-1.0A1) |
| 41 |
0.22 |
1.0
±0.3 |
300 |
60,000 |
20-1060 |
| 2-502011
(FT-50T-2.6A1) |
| 50 |
0.42 |
2.0
±0.5 |
250 |
50,000 |
20-1075 |
Input voltage (Vp-p max): 30.
Two PZT Layers (Bilaminar) / Solid Electrode
Diameter
of
Metal Disc
(mm) |
Total
Thickness
(mm) |
Resonance
Frequency
(kHz) |
Impedance
(maximum)
() |
Capacitance
(pF at 1 kHz)
(±30%) |
APCI
Catalog
No. |
| 211040T-JB/T04 with leads |
| 21.0 |
0.36 |
4.0 ±0.5 |
200 |
100,000 |
20-2225 |
| 231430T-JB/T04 with leads |
| 23.5 |
0.36 |
3.0 ±0.5 |
200 |
140,000 |
20-2230 |
| 261626T-JB/T04 with leads |
| 26.0 |
0.36 |
2.6 ±0.5 |
200 |
160,000 |
20-2235 |
View data sheets  |
Input voltage (Vp-p max): 15.
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