7BB-20-6L0 Datasheet

17
4
!Note
• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
Piezoelectric Sound Components
Piezoelectric Sounders External Drive Lead Wire Type
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.
■ Features
1. Low power consumption
2. No contacts therefore, no noise and highly reliable
■ Applications
1. Various office equipment such as PPCs, printers and
keyboards
2. Various home appliances such as microwave ovens
3. Confirmation sound of various audio equipment
70±5
3±1
φ16.8
(In : mm)
Tol. : ±0.5
7.0
+0 –0.3
PKM17EWH2001
φ16.8±0.2
100±10
4.0
+0 –0.3
(In : mm)
5±2
PKM17EWH4000
Part Number
Sound
Pressure Level
(dB)
Sound Pressure
Level (Ref. only)
(dB)
Operating
Voltage Range
Capacitance
(nF)
Operating
Temp. Range
(°C)
Storage
Temp. Range
(°C)
PKM17EWH2001
72 min.
[3Vp-p,2kHz,square wave,10cm]
70 min.
[1Vrms,2kHz,sine wave,10cm]
7.0 Vp-p max.
40.0 ±30%
[120Hz]
-20 to +70 -30 to +80
PKM17EWH4000
75 min.
[3Vp-p,4kHz,square wave,10cm]
70 min.
[1Vrms,4kHz,sine wave,10cm]
25.0 Vp-p max.
9.5 ±30%
[1kHz]
-20 to +70 -30 to +80
■ Freq. Response (Square Wave 3Vp-p, 10cm)
PKM17EWH2001
100 500 1k 5k 10k 20k
50
40
60
70
80
90
100
Frequency (Hz)
Sound Pressure Level (dB)
Input Voltage : 3.00 Vp-p Square
Distance : 10 cm
PKM17EWH4000
Sound Pressure Level (dB)
40
50
Frequency (Hz)
100 500 1k 5k 10k 20k
60
70
80
90
100
Input Voltage : 3.00 Vp-p Square
Distance : 10cm
Continued on the following page.
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
sales representatives or product engineers before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
!Note
P37E.pdf
10.1.28