7BB-35-3 Murata, 7BB-35-3 Datasheet - Page 18

• Manufacturer Part Number: 7BB-35-3
• Description: Speakers & Transducers 7BB-35-3
• Manufacturer: Murata
• Series: 7BBr

Specifications of 7BB-35-3

• Magnet Material: Brass
• Diameter: 35 mm
• Frequency Range: 2.8 KHz
• Impedance: 200 Ohms
• Capacitance: 8nF
• External Depth: 0.53mm
• External Diameter: 35mm
• Resonant Frequency: 2.8kHz
• Transducer Function: Diaphragm
• Length/height, External: 0.3mm
• Operating Temperature Max: 7°C
• Operating Temperature Min: -20°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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.
Now, microcomputers are widely used for microwave
ovens, air conditioners, cars, toys, timers, and other
alarm equipment. Externally driven piezoelectric
sounders are used in digital watches, electronic
calculators, telephones and other equipment. They are
driven by a signal (ex, 2048Hz or 4096Hz) from an LSI
and provide melodious sound.
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.
PKM17EW-2001
PKM17EW-4000
Piezoelectric Sound Components
Piezoelectric Sounders External Drive Lead Wire Type
keyboards.
Features
Applications
Freq. Response (Square Wave 3Vp-p, 10cm)
Part Number
100
90
80
70
60
50
40
100
Input Voltage : 3.00 Vp-p Square
Distance : 10 cm
PKM17EW-2001
[3Vp-p,2kHz,square wave,10cm]
[3Vp-p,4kHz,square wave,10cm]
500
Pressure Level
Frequency (Hz)
1k
Sound
72 min.
75 min.
(dB)
5k
10k
[1Vrms,2kHz,sine wave,10cm]
[1Vrms,4kHz,sine wave,10cm]
20k
Sound Pressure
Level(Ref. only)
70 min.
70 min.
(dB)
PKM17EW-2001
PKM17EW-4000
Voltage Range
Operating
(Vp-p)
25 max.
7 max.
100
90
80
70
60
50
40
100
Input Voltage : 3.00 Vp-p Square
Distance : 10cm
Capacitance
9.5 30%
40 30%
PKM17EW-4000
500
[120Hz]
[1kHz]
(nF)
Frequency (Hz)
1k
Continued on the following page.
Temp. Range
16.8 0.2
16.8
-20 to +70 C
-20 to +70 C
Operating
5k
10k
P37E17.pdf 02.3.6
Temp. Range
(In : mm)
(In : mm)
Tol. : 0.5
-30 to +80 C
-30 to +80 C
20k
Storage
17
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