7BB-12-9 Murata, 7BB-12-9 Datasheet - Page 37

• Manufacturer Part Number: 7BB-12-9
• Description: Speakers & Transducers ACOUSTIC ELEMENT
• Manufacturer: Murata
• Series: 7BBr

Specifications of 7BB-12-9

• Magnet Material: Brass
• Diameter: 12 mm
• Frequency Range: 9 KHz
• Impedance: 1000 Ohms
• Capacitance: 8nF
• External Diameter: 12mm
• Resonant Frequency: 9kHz
• Transducer Function: Diaphragm
• Length/height, External: 0.1mm
• Outer Diameter: 12mm
• Sensor Operating Frequency: 8kHz To 10kHz
• Rohs Compliant: Yes
• Operating Temperature Max: 70°C
• Operating Temperature Min: -20°C
• Operating Frequency Range: 8kHz To 10kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10
Please read CAUTION and Notice in this catalog for safety. This catalog has only typical specifications. Therefore you are requested
to approve our product specification or to transact the approval sheet for product specification, before your ordering.
1. Applying load on the center area of the speaker may
2. Washing of the component is not acceptable, because
1. Please do not touch the component with bare hand
2. The component may be damaged if mechanical stress
3. Please pay attention to protect operating circuit from
4. If DC voltage is applied to the component, silver migration
5. The resistor should be used as shown in Fig. A.
6.Please pay enough attention not to pull lead wire too
36
Piezoelectric Speakers (CERAMITONEr) Notice
Notice (Soldering and Mounting)
cause clack in the ceramic element. When the
speaker is supported by edge, the load should be
only applied around edge.
it is not sealed.
Notice (Handling)
because electrode may be corroded.
over this specification is applied.
surge voltage provided by something of force such as
falling, shock and temperature changing.
may occur. Please pay full attention not to subject the
component to DC voltage for long periods.
A suitable resistance value should be chosen, preferably
1k to 2k . Instead of this measure, a diode may also be
applied as shown in Fig. B.
much because wire may be broken or soldering point may
come off.
IC
Fig.A
IC
Fig.B
R
P37E17.pdf 02.3.6