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PCRT21ASX Datasheet - Page 12

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Piezoelectric Acoustic Generators
Piezo Ceramic Elements - Self Oscillating Type
Specifications
(G type Self Oscillating Type)
Resonant
Resonant
Model No.
Frequency
Impedance
(kHz)
( )
KBS-27DA-5G
4.6
0.5
200
KBS-35DA-3G
12.9
0.5
200
KBS-35DA-3GS
13.2
0.5
200
KBS-35DA-3GS-6
13.2
0.3
200
KBS-41DA-2G
12.2
0.3
200
(F type)
Resonant
Resonant
Model No.
Frequency
Impedance
(kHz)
( )
KBS-35DA-3FCS
3.2
0.5
200
Application Circuits for Self-Drive Oscillation Buzzer
R
2
R
1
R
3
Tr
Transistor Oscillation
NOTE:
Wherever possible, the piezo devices should be capacitive coupled to avoid permanent DC bias and possible long term damage.
Static
Dimensions (mm)
Capacitance
Metal Disc
Ceramic Disc
Electrode
(pF)
( A)
( B)
16,000
30%
27.0
0.1
20.2
0.3
(19.0)
25,000
30%
35.0
0.1
25.0
0.5
(23.6)
25,000
30%
34.55
0.1
25.0
0.5
(23.6)
25,000
30%
34.55
0.1
25.0
0.5
(23.5)
20,000
30%
41.47
0.1
25.0
0.5
(23.6)
Static
Dimensions (mm)
Capacitance
Metal Disc
Ceramic Disc
Electrode
(pF)
( A)
( B)
25,000
30%
34.55
0.1
25.0
0.5
(23.0)
+V
R
3
A
R
: 200K
1
R
: 100K
2
R
: 500
R
: 1.5M
3
3
R
: 1M
1
C
: 1000pF
1
IC Oscillation
Metal Disc
Total Thickness
Metal Disc
Material
( C)
(T)
Thickness (t)
0.53
0.1
0.25
0.03
Brass
0.53
0.1
0.25
0.03
Brass
0.53
0.1
0.25
0.03 Stainless Steel
0.53
0.1
0.25
0.03 Stainless Steel
0.53
0.1
0.35
0.04
Brass
Metal Disc
Total Thickness
Metal Disc
Material
( C)
(T)
Thickness (t)
0.53
0.1
0.25
0.03 Stainless Steel
R
C
1
1
B
Alarm
11

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