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PIEZO ALARMS ENCASED EXTERNAL DRIVE (no internal circuitry) PKM Series
The piezo alarms described on this page have no "feedback" tab and are particularly suited for the generation of both single tones and the unusual sound effects that are possible with specifically designed driving circuits. These sounds may include musical melodies, insect sounds, etc. All mechanical and electrical components are designed to be compatible with most standard PC board assembly and wave soldering techniques.
FEATURES
I Rugged construction I Compatible with wave soldering techniques I Low cost I High reliability I Variable tone outputs I No EMI
APPLICATIONS
I Musical toys I Home appliances (microwave ovens, refrigerators, etc.) I Communications equipment I Computer peripherals and office equipment I Instrumentation, etc.
PKM35-4A0 PKM17EW-2001
PIEZO ALARMS
Part Number
PKM22EPP-4001*
PKM22EP-2001
PKM22EP-2001R
Sound Pressure Level 75dB@10cm@3Vp-p Oscillating Frequency 4kHz Operating Voltage 25Vp-p
75dB@10cm@3Vp-p 2kHz 25Vp-p -20C to +70C -40C to +80C 17,000pF 30% at 120Hz --
75dB@10cm@3Vp-p 2kHz 25Vp-p -40C to +125C -40C to +125C 17,000pF 30% at 120Hz --
12.6
75dB@10cm@3Vp-p 4kHz 25Vp-p -20C to +70C -30C to +80C 9,500pF 30% at 1kHz 32AWG (UL-1685)
72dB@10cm@3Vp-p 2kHz 7Vp-p max. -20C to +70C -30C to +80C 40,000pF 30% at 120Hz 32AWG (UL-1685)
OperatingTemp.Range -20C to +70C Storage Temp.Range Capacitance Leads DIMENSIONS: mm -30C to +80C 12,000pF 30% at 1kHz --
10.5 4.8 terminal 1.6
20 4.7 8.0 16.8 0.2 D. Dia. 22.0 16.8 0.2 Dia.
0.8
R1.0
11.0 4.0 0.4 4.0
5.0
8.3 A
22.0 Dia. 7.0 6.5
1.2 100.0 10.0
70.0 5.0
10.0 0.5 2-1.2 Dia. 2-3.5 Dia.
Detail of A 52 10.0 0.5 2.0 3.5 0.2 0.4 0.75 1.3 1.2 1.5
+0 -0.3
3.0 1.0
4.0
7.0
+0 -0.3
2.5 3.5 5.0
Tolerance: 0.5
Sound Pressure Level (dB)
100
105.0 95.0 SPL (dB) 85.0 75.0 65.0 55.0 45.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Frequency (Hz) Input Voltage: Square wave 3Vp-p Measuring Distance: 10cm
Sound Pressure Level (dB)
SOUND PRESSURE LEVEL VS. FREQUENCY
90 80 70
Sound Pressure Level (dB)
100 90 80 70 60 50 40 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.010.0 Frequency (kHz) Input Voltage: Square wave 3Vp-p Measuring Distance: 10cm
90 80 70 60 100
500 1k 5k 10k 20k Frequency (Hz)
12
345 6789 Frequency (kHz)
Input Voltage: Square wave 3Vp-p Measuring Distance: 10cm
Input Voltage: Square wave 3Vp-p Measuring Distance: 10cm
*These parts are available as sealed units for washing with tape covering the sound emitting hole. The part number should have an "S" suffix added. Available as standard through authorized Murata Electronics Distributors.
CG01-J
411
PIEZO ALARMS ENCASED EXTERNAL DRIVE (no internal circuitry) PKM Series
Part Number Sound Pressure Level Oscillating Frequency Operating Voltage Operating Temp.Range Storage Temp.Range Capacitance Leads DIMENSIONS: mm *PKM22EPP-2001 70dB@10cm@3Vp-p 2kHz 25Vp-p -20C to +70C -30C to +80C 19nF 30% at 120Hz -- PKM22EPP-2002R 70dB@10cm@3Vp-p 2kHz 25Vp-p -40C to +125C -40C to +125C 19nF 30% at 120Hz -- PKM22EPP-4005 75dB@10cm@3Vp-p 4kHz 25Vp-p -20C to +70C -30C to +80C 12nF 30% at 1kHz -- PKM22EPP-4007 85dB@10cm@3Vp-p 4kHz 25Vp-p -20C to +70C -30C to +80C 12nF 30% at 1kHz --
2.0 0.8 2- 1.2 10.0 22.0
10.8 1.2 3.5 0.8 10.0 22.0 10.0 1.2 3- 1.5 3- 1.7 5.0 2- 3.5
12
10.8 1.2 8.2 6.5 2- 1.2 0.8 10.0 22.0 1.2
10.0 2- 3.5
2- 3.5
R8.
0
5
12 0
5.0
Part Number PKM22EPP-2001 PKM22EPP-2002
SOUND PRESSURE LEVEL VS. FREQUENCY
(mm) 6.5 3.5
Part Number PKM22EPP-4007 PKM22EPP-4012
(mm) 6.5 3.5
Sound Pressure Level (dB)
Sound Pressure Level (dB)
100 90 80 70 60 50 40 100 500 1k 5k 10k 20k Frequency (Hz)
100 90 80 70 60 50 40 100 500 1k 5k 10k 20k Frequency (Hz)
Sound Pressure Level (dB)
110 100 90 80 70 60 50 100 500 1k 5k 10k 20k Frequency (Hz)
Available as standard through authorized Murata Electronics Distributors.
412
CG01-J
PIEZO ALARMS ENCASED EXTERNAL DRIVE (no internal circuitry) PKM Series
TYPICAL PART NUMBERING
PKM 22 E PP -- 4 001
External circuitry required
Case diameter
External drive required (Vp-p req.)
Pins for PC mounting
Resonant frequency
Suffix for special requirements
PIEZO ALARMS
Part Number Sound Pressure Level Oscillating Frequency Operating Voltage Operating Temp.Range Storage Temp.Range Capacitance Leads DIMENSIONS: mm
PKM13EPY-4002
PKM17EPP-2002 70dB@10cm@3Vp-p 2kHz 25Vp-p -20C to +70C -40C to +80C 3,400pF 30% --
PKM17EPP-4001*
PKM11-4AO
70dB@10cm@3Vp-p 4.0kHz 25Vp-p -20C to +70C - 30C to +80C 5,500pF 30% --
72dB@10cm@3Vp-p 4kHz 25Vp-p -20C to +70C -30C to +80C 7,000pF 30% --
75dB@10cm@3Vp-p 4kHz 25Vp-p -20C to +60C -30C to +70C 10,000pF 30% 30AWG (UL-1571)
34.4 29.0 24 D.
7.0 12.6 D. 0.9 6.9 3.5 5.0 10.0 0.5 2-1.2 Dia. 4.5 1.5 6 2-2.5 Dia. 2-3.5 D. 5 5
R 1.0
2.2
17.0 Dia. 7.0 6.5 1.2
2.2 D.
2.7
100.0 10.0
Sound Pressure Level (dB)
SOUND PRESSURE LEVEL VS. FREQUENCY
100 90 80 70 60 50 40 0 2.0k 4.0k 6.0k 8.0k 10.0k
105 95 85 75 65 55 45 .5 1.5 2.5 3.5 4.5 5.5
100 90 80 80 60 70 40 2.0k 3.0k 4.0k 5.0k 6.0k 7.0k 1 2 3 4 5 6 7 8 9
Input Voltage: Square wave 3Vp-p Measuring Distance: 10cm
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
*These parts are available as sealed units for washing with tape covering the sound emitting hole. The part number should have an "S" suffix added. Available as standard through authorized Murata Electronics Distributors.
CG01-J
413
PIEZO ALARMS ENCASED PIEZO ALARMS SELF DRIVE (no internal circuitry)
As the use of microprocessors in consumer products has become increasingly popular, so too has the use of piezo alarms as the accepted means of audio alarm generation. Their ability to be driven by IC's, small size, low cost and high reliability, make them ideal for such applications. The units shown on this page are equipped with a feedback tab for use with selfoscillating circuit designs. By utilizing the feedback, the part's individual resonant frequency is found to optimize sound pressure level. All mechanical and electrical components are designed to be compatible with most standard PC board assembly and wave soldering techniques.
PKM Series
FEATURES
I Small size I Low cost I High sound pressure level I Low input voltage I Low current consumption
APPLICATIONS
I Clocks I Office equipment, machine tools, toys, games, etc. I Automatic controlling devices instrumentation, calculators I Home appliances (microwave ovens, refrigerators, etc.) I Smoke alarms
Part Number Sound Pressure Level Oscillating Frequency Current Operating Voltage Operating Temp.Range Storage Temp.Range DIMENSIONS: mm
PKM25-6AO
PKM24SP-3805
90dB@12V@10cm 6.8 0.7kHz 10mA 3 to 20V -20C to +70C - 30C to +80C
90dB@12V@10cm 3.8 0.4kHz 12mA 3 to 20V -20C to +70C -30C to +80C
12.3 M 18 R14.2 130 F 24.0 Dia. G 11.3
1.0 R
25.0 D. 7.0 Terminal 1.2 6.5 0.4 0.8 0.8
11.0 8.3 4.0 3.5
2-1.2 D. 12.0 8.5 0.2 130 R12.9 F 10.9 G 7.0 3 - 1.2 Dia.
3-3.5 D. 4.0 0.2
M 18
Sound Pressure Level (dB)
Sound Pressure Level (dB)
SOUND PRESSURE LEVEL VS. INPUT VOLTAGE
90
110 100 90 3 6 9 12 15 Input Voltage (VDC) 20
80
70 60 0 3 6 9 12 15 Input Voltage (V) 20
Available as standard through authorized Murata Electronics Distributors.
414
CG01-J
PIEZO ALARMS ENCASED EXTERNAL DRIVE (no internal circuitry) PKM Series
TYPICAL PART NUMBERING
PKM
30
S
W
--
3
001
External circuitry required
Case diameter
Self drive required (VDC req.)
Lead wires
Resonant frequency
Suffix for special requirements
PIEZO ALARMS
Part Number Sound Pressure Level Oscillating Frequency Current Operating Voltage Operating Temp.Range Storage Temp.Range Leads DIMENSIONS: mm
PKM11-6AO
PKM29-3AO
80dB@12V@10cm 6.5 0.7kHz 8mA 3 to 15V -20C to +60C -30C to +70C 30AWG (UL-1571)
34.4 29.0 24 D.
105dB@9V@1M 3.4 0.4kHz 20mA 4.5 to 18.0V -20C to +70C -30C to +80C --
7.0 2.2 D. 2.7
2.2 2.0
0.8 1.5
39.0 D.
1.53 4.8 20.0
50.0 10.0
5.8 8.0 0.2 17.9 7.5 120 4.5 1.5 120 25.0
4.0 10.5 0.2
3-4.0 D. 2-2.0 D.
1.5 R.
Sound Pressure Level (dB)
100 90 80 70 0 3 6 9 12 15 Input Voltage (VDC)
Sound Pressure Level (dB)
SOUND PRESSURE LEVEL VS. INPUT VOLTAGE
100 90 80 3 6 9 12 15 18 20 Input Voltage (VDC)
Available as standard through authorized Murata Electronics Distributors.
CG01-J
415

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