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

• 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

1
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. Low power consumption.
2. No contacts therefore, no noise and highly reliable.
• Telephone ringers.
• Various office equipment such as PPCs, printers and
• Various home appliances such as microwave ovens.
• Confirmation sound of various audio equipment.
6
External Drive Type
Part Number
7BB-12-9
7BB-15-6
7BB-20-3
7BB-20-6
7BB-20-6A0
7BB-27-4
7BB-27-4A0
7BB-35-3
7BB-35-3A0
7BB-41-2
7BB-41-2A0
7BB-50M-1
7SB-20-7
Piezoelectric Sound Components
Piezoelectric Diaphragms
keyboards.
Features
Applications
9.0 1.0kHz 1000 max.
6.0 1.0kHz 350 max.
3.6 0.6kHz 500 max.
6.3 0.6kHz 350 max.
6.3 0.6kHz 1000 max.
4.6 0.5kHz 200 max.
4.6 0.5kHz 300 max.
2.8 0.5kHz 200 max.
2.8 0.5kHz 200 max.
2.2 0.3kHz 250 max.
2.2 0.3kHz 300 max.
1.0 0.3kHz 1200 max.
7.2 0.8kHz 350 max.
Frequency
Resonant
(kHz)
Impedance
Resonant
(ohm)
Capacitance
10 30%
20 30%
10 30%
10 30%
20 30%
20 30%
30 30%
30 30%
30 30%
30 30%
28 30%
10 30%
8 30%
[120Hz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
[1kHz]
(nF)
dia D (mm)
Plate Size
(dia)
12.0
15.0
20.0
20.0
20.0
27.0
27.0
35.0
35.0
41.0
41.0
50.0
20.0
Element Size
a (mm)
(dia)
10.0
14.0
14.0
14.0
19.7
19.7
25.0
25.0
25.0
25.0
25.0
14.0
9.0
Electrode Size
b (mm)
(dia)
12.8
12.8
12.8
18.2
18.2
23.0
23.0
23.0
23.0
23.0
12.8
8.0
9.0
Thickness
T (mm)
0.22
0.22
0.22
0.42
0.42
0.54
0.54
0.53
0.53
0.63
0.63
0.44
0.42
D
Plate Thickness
a
T
t (mm)
b
0.10
0.10
0.10
0.20
0.20
0.30
0.30
0.30
0.30
0.40
0.40
0.20
0.20
t
Nickel-Plated Brass
(with Lead Wire)
(with Lead Wire)
(with Lead Wire)
(with Lead Wire)
Plate Material
P37E17.pdf 02.3.6
Stainless
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Brass
Red
Black