7BB-12-9 Murata, 7BB-12-9 Datasheet - Page 27

• 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

7
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.
Piezoelectric sounder self drive type requires only
simple circuit and DC power supply. Since this type
uses resonant system, it is also available for alarms
which need large sound volume.
• Gas alarms, burglar alarms, smoke detectors.
• Air conditioners, Microwave ovens, washing machines
• Bicycles, toys, game machines.
26
PKM24SP-3805
PKM30SPT-2001-B0
PKM30SPT-2501-B0
Piezoelectric Sound Components
Piezoelectric Sounders Self Drive Pin Type
and other home-electronic appliance controlled by
microcomputer.
Applications
Standard Circuit Examples
Part Number
100k
PKM30SPT-2001/2501
12k
Tr: 2SC1815Y or equivalent
Pressure Level
[12Vdc,10cm]
[12Vdc,10cm]
[12Vdc,10cm]
90 min.
75 min.
75 min.
Sound
(dB)
Tr.
330
GND
M
G
3.8 0.4kHz
2.0 0.3kHz
2.5 0.3kHz
Oscillating
Frequency
F
[12Vdc]
[12Vdc]
[12Vdc]
(kHz)
Vdc
Consumption
12 max.
20 max.
20 max.
Current
[12Vdc]
[12Vdc]
[12Vdc]
(mA)
PKM30SPT-2001/2501
PKM24SP-3805
Voltage Range
3.0 to 20.0
3.0 to 20.0
3.0 to 20.0
Operating
(Vdc)
150k
3.9k
R15.25
Tr: 2SC1815Y or equivalent
1.0
PKM24SP-3805
Temp. Range
Tr.
-20 to +70 C
-20 to +70 C
-20 to +70 C
Operating
M
30.5
620
GND
25.0
PKM24SP-3805
PKM24SP-3810
PKM24SP-3807
PKM24SP-3801
17.5
Part Number
130˚
M
18˚
5.0
24.0
Vdc
12.3
G
F
F
8.5
G
P37E17.pdf 02.3.6
Temp. Range
(In : mm)
Tol. : 0.5
-30 to +80 C
-30 to +80 C
-30 to +80 C
12.0
14.0
4.0
8.0
Storage
5.2
7.7
0.5 0.15
0.25 0.15
(In : mm)
Tol. : 0.5