With Full Electrode
Part Number
|
Resonant Freq. (kHz)
|
Resonant Impedance Ω (max)
|
Capacitance (PF @ 1kHz)
± 30% |
Input Voltage (VP-P max)
|
Diameter (mm)
|
Thickness (mm)
|
Plate
|
||
D±0.2
|
d±0.2
|
T±0.2
|
t±0.2
|
||||||
FT-25T-4.8A1
|
4.8±0.5
|
300
|
25,000
|
30
|
25
|
20
|
0.50
|
0.25
|
Brass
|
FT-27T-3.8A1
|
3.8±0.5
|
300
|
25,000
|
30
|
27
|
20
|
0.45
|
0.22
|
Brass
|
FT-27T-3.4A1
|
3.4±0.5
|
300
|
25,000
|
30
|
27
|
20
|
0.42
|
0.20
|
Brass
|
FT-35T-1.8A1
|
1.8±0.5
|
300
|
40,000
|
30
|
35
|
25
|
0.33
|
0.15
|
Brass
|
FT-35T-2.6A1
|
2.6±0.5
|
300
|
30,000
|
30
|
35
|
25
|
0.42
|
0.20
|
Brass
|
FT-35T-2.8A1
|
2.8±0.5
|
300
|
20,000
|
30
|
35
|
25
|
0.48
|
0.23
|
Brass
|
FT-35G-3.0A1
|
3.0±0.5
|
300
|
25,000
|
30
|
35
|
25
|
0.55
|
0.30
|
SUS
|
FT-43T-3.0A1
|
3.0±0.5
|
300
|
30,000
|
30
|
43
|
25
|
0.42
|
0.20
|
Brass
|
FT-50T-2.6A1
|
2.6±0.5
|
250
|
50,000
|
30
|
50
|
30
|
0.42
|
0.20
|
Brass
|
FT-50T-3.0A1
|
3.0±0.5
|
300
|
30,000
|
30
|
50
|
25
|
0.42
|
0.20
|
Brass
|
FTBD-12T-9.5A1
|
9.5±1.0
|
1,000
|
8,000
|
30
|
12
|
9
|
0.22
|
0.10
|
Brass
|
FTBD-13.5T-7.5A1
|
7.5±1.0
|
1,000
|
9,000
|
30
|
13.5
|
10
|
0.22
|
0.10
|
Brass
|
FTBD-15T-6.0A1
|
6.0±1.0
|
500
|
14,000
|
30
|
15
|
12
|
0.22
|
0.10
|
Brass
|
FTBD-20T-3.9A1
|
3.9±0.5
|
300
|
25,000
|
30
|
20
|
15
|
0.22
|
0.10
|
Brass
|
FTBD-20G-4.0A1
|
4.0±0.5
|
300
|
25,000
|
30
|
20
|
15
|
0.22
|
0.10
|
SUS
|
FTBD-27T-2.6A1
|
2.6±0.3
|
300
|
40,000
|
30
|
27
|
20
|
0.22
|
0.10
|
Brass |
FTBD-27G-2.7A1
|
2.7±0.3
|
300
|
40,000
|
30
|
27
|
20
|
0.22
|
0.10
|
SUS
|
FTBD-31T-1.3A1
|
1.3±0.3
|
300
|
47,000
|
30
|
31
|
20
|
0.22
|
0.10
|
Brass
|
FTBD-31T-1.6A1
|
1.6±0.3
|
300
|
40,000
|
30
|
31
|
20
|
0.22
|
0.10
|
Brass
|
FTBD-31T-1.6A1
|
1.6±0.3
|
300
|
90,000
|
30
|
31
|
20
|
0.22
|
0.10
|
Brass
|
FTBD-31T-1.8A1
|
1.8±0.3
|
300
|
40,000
|
30
|
31
|
20
|
0.22
|
0.10
|
Brass
|
FTBD-31H-1.3A1
|
1.3±0.3
|
300
|
47,000
|
30
|
31
|
20
|
0.22
|
0.10
|
Alloy
|
FTBD-31G-1.3A1
|
1.3±0.3
|
300
|
47,000
|
30
|
31
|
25
|
0.22
|
0.10
|
SUS
|
FTBD-32T-1.4A1
|
1.4±0.3
|
300
|
60,000
|
30
|
32
|
25
|
0.22
|
0.10
|
Brass
|
FTBD-35T-1.2A1
|
1.2±0.3
|
300
|
60,000
|
30
|
35
|
25
|
0.22
|
0.10
|
Brass
|
FTBD-38T-1.1A1
|
1.1±0.3
|
300
|
60,000
|
30
|
38
|
30
|
0.22
|
0.10
|
Brass
|
FTBD-41T-0.8A1
|
0.8±0.3
|
300
|
100,000
|
30
|
41
|
25
|
0.22
|
0.10
|
Brass
|
FTBD-41T-1.0A1
|
1.0±0.3
|
300
|
60,000
|
30
|
41
|
25
|
0.22
|
0.10
|
Brass
|
FTBD-41T-0.8A1
|
0.8±0.3
|
300
|
37,000
|
30
|
41
|
25
|
0.22
|
0.10
|
Brass
|
FTBD-41G-0.8A1
|
0.8±0.3
|
300
|
77,000
|
30
|
41
|
25
|
0.22
|
0.10
|
SUS
|
FTBD-41T-0.7A1
|
0.7±0.3
|
300
|
77,000
|
30
|
41
|
25
|
0.22
|
0.10
|
Brass
|
FTBD-43T-0.8A1
|
0.8±0.3
|
300
|
60,000
|
30
|
43
|
25
|
0.22
|
0.10
|
Brass
|
With Feedback Electrode
Part Number
|
Resonant Freq. (kHz)
|
Resonant Impedance Ω (max)
|
Capacitance
(PF @ 1kHz) |
Input Voltage (VP-P max)
|
Diameter (mm)
|
Thickness (mm)
|
Plate
|
|||
C1±30%
|
C2±30%
|
D±0.2
|
d±0.2
|
T±0.2
|
t±0.2
|
|||||
FT-20T-6.6B1
|
6.6±0.5
|
500
|
10,000
|
1,400
|
30
|
20
|
15
|
0.42
|
0.20
|
Brass
|
FT-27T-4.2B1
|
4.2±0.5
|
500
|
14,000
|
1,700
|
30
|
27
|
20
|
0.52
|
0.25
|
Brass
|
FT-27T-4.6B1
|
4.6±0.5
|
200
|
16,000
|
1,900
|
30
|
27
|
20
|
0.48
|
0.23
|
Brass
|
FT-35T-2.6B1
|
2.6±0.5
|
300
|
26,000
|
2,600
|
30
|
35
|
25
|
0.42
|
0.20
|
Brass
|
FT-35T-2.8B1
|
2.8±0.5
|
300
|
30,000
|
4,000
|
30
|
35
|
25
|
0.38
|
0.20
|
Brass
|
FT-35G-2.8B1
|
2.8±0.5
|
300
|
28,000
|
2,800
|
30
|
35
|
25
|
0.53
|
0.30
|
SUS
|
FT-35G-3.0B1
|
3.0±0.5
|
300
|
23,000
|
2,900
|
30
|
35
|
25
|
0.50
|
0.25
|
SUS
|
FT-35G-2.8B1
|
2.8±0.5
|
300
|
45,000
|
6,000
|
30
|
35
|
25
|
0.55
|
0.32
|
SUS
|
FTBD-20T-3.9B1
|
3.9±0.5
|
300
|
20,000
|
2,200
|
30
|
20
|
15
|
0.22
|
0.10
|
Brass
|
FTBD-20G-4.0B1
|
4.0±0.5
|
300
|
20,000
|
22,000
|
30
|
20
|
15
|
0.22
|
0.10
|
SUS
|
FTBD-21H-3.8B1
|
3.8±0.5
|
300
|
20,000
|
2,500
|
30
|
21
|
15
|
0.27
|
0.15
|
Alloy
|
FTBD-22G-4.0B1
|
4.0±0.5
|
300
|
30,000
|
4,000
|
30
|
22
|
20
|
0.22
|
0.10
|
SUS
|
FTBD-27T-2.6B1
|
2.6±0.3
|
300
|
30,000
|
4,000
|
30
|
27
|
20
|
0.22
|
0.10
|
Brass
|
Super Thinner
Part Number
|
Resonant Freq. (kHz)
|
Resonant Impedance Ω (max)
|
Capacitance (PF @ 1kHz)
± 30% |
Input Voltage (VP-P max)
|
Diameter (mm)
|
Thickness (mm)
|
Plate
|
||
D±0.2
|
d±0.2
|
T±0.2
|
t±0.2
|
||||||
FTBD-12T-4.5A1
|
4.5±1.0
|
1,000
|
12,000
|
30
|
12
|
9
|
0.12
|
0.05
|
Brass
|
FTBD-12T-4.5B1
|
4.5±1.0
|
1,000
|
9,000
|
30
|
12
|
9
|
0.12
|
0.05
|
Brass
|
FTBD-12H-4.6A1
|
4.6±1.0
|
1,000
|
12,000
|
30
|
12
|
9
|
0.12
|
0.05
|
Alloy
|
FTBD-12H-4.6B1
|
4.6±1.0
|
1,000
|
9,000
|
30
|
12
|
9
|
0.12
|
0.05
|
Alloy
|
FTBD-15H-2.6A1
|
2.6±0.5
|
1,000
|
75,000
|
30
|
15
|
12
|
0.12
|
0.05
|
Alloy
|
FTBD-20H-2.2A1
|
2.2±0.5
|
800
|
90,000
|
30
|
20
|
15
|
0.12
|
0.05
|
Alloy
|
Special-Shaped with Double Electrode
Part Number
|
Resonant Freq. (kHz)
|
Resonant Impedance Ω (max)
|
Capacitance (PF @ 1kHz)
± 30% |
Input Voltage (VP-P max)
|
Diameter (mm)
|
Thickness (mm)
|
Plate
|
||
D±0.2
|
d±0.2
|
T±0.2
|
t±0.2
|
||||||
FTBD-15T-7.0A1
|
7.0±0.5
|
700
|
10,000
|
30
|
15
|
9.6
|
0.22
|
0.10
|
Brass
|
FTBD-15T-7.0A1
|
7.0±0.5
|
700
|
14,000
|
30
|
15
|
11
|
0.22
|
0.10
|
Brass
|
FTBS-21T-4.0A1
|
4.0±0.5
|
100
|
80,000
|
30
|
21
|
20×2
|
0.38
|
0.10
|
Brass
|
FTBS-21.4T-3.0A1
|
3.0±0.5
|
200
|
100,000
|
30
|
21.4
|
20×2
|
0.38
|
0.10
|
Brass
|
FTBS-23.5T-3.0A1
|
3.0±0.5
|
150
|
100,000
|
30
|
23.5
|
22×2
|
0.38
|
0.10
|
Brass
|
FTBS-23.5T-3.5A1
|
3.5±0.5
|
150
|
80,000
|
30
|
23.5
|
20×2
|
0.38
|
0.10
|
Brass
|
FTBS-27T-2.8A1
|
2.8±0.5
|
150
|
120,000
|
30
|
27
|
25×2
|
0.38
|
0.10
|
Brass
|
FTBS-27T-3.0A1
|
3.0±0.5
|
150
|
80,000
|
30
|
27
|
20×2
|
0.38
|
0.10
|
Brass
|
FTBS-31T-2.5A1
|
2.5±0.5
|
100
|
120,000
|
30
|
31
|
25×2
|
0.38
|
0.10
|
Brass
|
FTBS-35T-3.0A1
|
3.0±0.5
|
150
|
120,000
|
30
|
35
|
25×2
|
0.38
|
0.10
|
Brass
|
FTBS-33T-2.0A1
|
2.0±0.5
|
150
|
120,000
|
30
|
33
|
25×2
|
0.38
|
0.10
|
Brass
|
FTBS-41T-2.5A1
|
2.5±0.5
|
100
|
120,000
|
30
|
41
|
25×2
|
0.38
|
0.10
|
Brass
|
FTBS-41T-1.0A1
|
1.0±0.5
|
100
|
200,000
|
30
|
41
|
30×2
|
0.38
|
0.10
|
Brass
|