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By bonding two piezoelectric ceramic panels together and applying an AC
voltage to them, alternately one element elongates while the other contracts causing
curved vibrations to take place. Conversely by bending it AC voltage can be extracted.
This is called a Bimorph Armature and it possesses frequency characteristics in the
audible range. It can be used as an phonograph record pickup, microphone, vibration
sensor, ultrasonic remote control etc..
Distinctive Features
 | High Quality
Stringently selected materials assure high sensitivity with little deviation
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| Wide Variation
Technology permits choice of a wide range of static capacity, dimension and resonant
frequency.
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| Mechanically Sturdy
Appropriate elastic panel is inserted at joints making a strong mechanical assembly
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| High Reliability
Excellent temperature and humidity characteristics guarantee reliable operation.
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STANDARD COMPONENTS
Dimensions (mm)
L X W X T |
Electrostatic
Capacity (pF) |
Characteristics |
Construction |
Main Applications |
15 X 1.5 X 0.6 |
750 |
Popular type, high sensitivity |
Series type |
Record pickup
Various: microphones
Speakers
Vibration pickup |
| 1000 |
| 2000 |
High Capacity |
| 4000 |
High Capacity wide band |
Parallel type |
| 7000 |
12.7 X 1.6 X 0.65 |
550 |
High Sensitivity compact size |
Series type |
| 850 |
| 1700 |
High Capacity |
7.7 X 7.7 X 0.7 |
1200 |
High Sensitivity |
Series type |
Ultrasonic remote control |
9 X 9 X 0.6 |
2000 |
Wide band |
For other custom sizes consult with Fuji
& Co. Select our information request form at the top of the page for
fast response to your inquiry.
SPECIFICATIONS
| Series Type
Electrically series-connected high sensitivity type, with static capacity range of 300 to
2500 pF.
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| Parallel Type
Electrically parallel-connected large capacity type, with static capacity range of 3000 to
7000 pF.
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| (+) Polarity
When excited, plus sine-wave AC electromotive force ( 0-phase) is generated.
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| (-) Polarity
When excited, minus sine-wave AC electromotive force ( pi-phase) is generated.
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| Polarity Identification
Polarity is indicated by a color code.
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| Lead Terminal
Specify whether lead (ribbon) is needed or not.
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| Moisture-Proof Coating
Specify if moisture-proof coating is to be provided.
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Quality Standards
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Specify these items when ordering
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| Output Sensitivity
Tolerance +/-3dB @ 1kHz. |
| Electrostatic Capacity
Nominal value +/-20% @ 1kHz. |
| Insulation Resistance
>50 M ohms @ 50 V DC |
| Withstanding Voltage
100 V DC series type
50 V DC parallel type |
| Ambient Temperature
-10 to + 60 C° |
| Withstanding Humidity
90% @ 40 C° |
| Transverse Breaking Strength
Center load of 3N over 10 mm span |
| Dimensions
L ±0.2, W +/-0.1, T +/-0.005 mm
not including coating |
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| Dimension
Length, Width, Thickness |
| Characteristics
Electrostatic capacity, needed
sensitivity |
| Polarities
for monaural or stereo |
| Specifications
Lead terminal
Moisture proofing yes/no |
| Other related items |
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FUJI &
CO.(Piezo Science)
