Toroidal Chokes for Class D Amplifiers
www.ctparts.com
CTCDTF Series
From 4.7 µH to 56 µH
CHARACTERISTICS
Description:
Toroidal Chokes for Class D amplifiers.
Applications:
Powered Loudspeakers, electronic motor drives, portable amps,
PA systems & car amps.
Testing:
Inductance is tested at 10kHz, 10 gauss, 0Adc.
Winding:
Single layer wound for high self-resonant frequency.
Core:
10 permeability Carbonyl Micrometals© Core.
Packaging:
Bulk Packaged.
Additional Information:
• D
L of less than 10% a currents greater than 100A
• Class-D Operation 250kHz - 500kHz
• High Linearity Under Peak Bias Conditions
• Extremely Low Loss Under Typical Class-D ripple Current conditions
• Reduced THD Due to Highest Linearity
• Custom values & horizontal mounted configurations available upon request.
Note:
Application should limit long term absolute temperature of component to
be 75°C Max.
Miscellaneous:
RoHS Compliant.
Samples available. See website for ordering information.
Not Shown at Actual Size
SPECIFICATIONS
Part Number
Closest
Standard value
µHy
4.7
6.8
10.0
12.0
15.0
18.0
22.0
Nominal Initial
Inductance (0 ADC)
µHy (±7%)
4.84
6.59
10.3
12.1
14.8
17.8
21.8
DC Resistance
(ref., 20°C)
W
0.011
0.015
0.029
0.036
0.040
0.064
0.072
Long-Term r.m.s.
current guideline
Amperes r.m.s.
8.6
6.8
4.3
3.4
3.4
2.1
2.1
Peak Current for 5%
Inductance Drop
Amperes peak
35.8
30.7
24.6
22.6
20.5
18.7
16.9
Peak Current for
10% Inductance
Drop Amperes Peak
75.6
64.8
51.9
47.8
43.2
39.5
35.6
41 mW
26 mW
Core Loss (typ.)
at
100 kHz, 140 Gauss
Core Loss (typ.)
at
500 kHz, 50 Gauss
CTCDTF-09401
CTCDTF-09402
CTCDTF-09403
CTCDTF-09404
CTCDTF-09405
CTCDTF-09406
CTCDTF-09407
CTCDTF-10601
CTCDTF-10602
CTCDTF-10603
CTCDTF-10604
CTCDTF-10605
CTCDTF-10606
CTCDTF-10607
4.7
6.8
10.0
12.0
15.0
18.0
22.0
4.87
6.53
9.84
12.2
14.7
18.5
21.6
0.009
0.012
0.018
0.025
0.028
0.039
0.050
10.9
8.6
6.8
5.4
5.4
4.3
3.4
49.2
42.5
34.6
31.2
28.3
25.3
23.4
103.8
89.7
73.1
65.8
59.8
53.3
49.3
57 mW
36 mW
CTCDTF-13001
CTCDTF-13002
CTCDTF-13003
CTCDTF-13004
CTCDTF-13005
CTCDTF-13006
CTCDTF-13007
4.7
6.8
10.0
12.0
15.0
18.0
22.0
4.85
6.88
9.9
12.0
15.1
17.6
22.3
0.008
0.009
0.011
0.015
0.022
0.027
0.036
13.7
13.7
13.7
10.9
8.6
6.8
5.4
56.8
47.7
39.7
36.1
32.2
29.8
26.5
119.9
100.7
83.9
76.3
68.0
62.9
55.9
110 mW
70 mW
CTCDTF-15401
CTCDTF-15402
CTCDTF-15403
CTCDTF-15404
CTCDTF-15405
CTCDTF-15406
CTCDTF-15407
18.0
22.0
27.0
33.0
39.0
47.0
56.0
18.1
22.4
27.1
33.6
39.3
47.1
55.6
0.020
0.022
0.030
0.040
0.045
0.062
0.085
10.9
10.9
8.6
6.8
6.8
5.4
4.3
40.4
36.4
33.1
29.7
27.4
25.1
23.1
85.3
76.8
69.8
62.7
57.9
52.9
48.7
204 mW
129 mW
Copyright © 2009 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
Manufacturer of Passive Components
800-684-5322 Inside US
949-453-1811 Outside US
REV 05.07.09
Toroidal Chokes for Class D Amplifiers
PHySICAl dImENSIONS
Part Number
Outside Diameter
(maximum)
Inches
1.125
1.125
1.1
1.07
1.07
1.05
1.05
Width
(maximum)
Inches
0.47
0.46
0.45
0.43
0.43
0.4
0.4
Lead Space
Dimension
Inches
0.41
0.4
0.38
0.38
0.38
0.37
0.37
Lead
Diameter
Inches
0.052
0.047
0.037
0.033
0.033
0.026
0.026
www.ctparts.com
CTCDTF-09401
CTCDTF-09402
CTCDTF-09403
CTCDTF-09404
CTCDTF-09405
CTCDTF-09406
CTCDTF-09407
CTCDTF-10601
CTCDTF-10602
CTCDTF-10603
CTCDTF-10604
CTCDTF-10605
CTCDTF-10606
CTCDTF-10607
1.25
1.25
1.25
1.22
1.22
1.21
1.21
0.62
0.62
0.62
0.6
0.6
0.59
0.58
0.54
0.54
0.52
0.52
0.52
0.52
0.52
0.058
0.052
0.047
0.042
0.042
0.037
0.033
CTCDTF-13001
CTCDTF-13002
CTCDTF-13003
CTCDTF-13004
CTCDTF-13005
CTCDTF-13006
CTCDTF-13007
1.52
1.52
1.52
1.5
1.5
1.49
1.48
0.66
0.66
0.66
0.63
0.63
0.62
0.62
0.59
0.59
0.59
0.59
0.57
0.56
0.56
0.066
0.066
0.066
0.058
0.052
0.047
0.042
CTCDTF-15401
CTCDTF-15402
CTCDTF-15403
CTCDTF-15404
CTCDTF-15405
CTCDTF-15406
CTCDTF-15407
1.79
1.79
1.78
1.77
1.77
1.75
1.73
0.79
0.79
0.78
0.75
0.75
0.74
0.73
0.69
0.69
0.69
0.67
0.67
0.67
0.66
0.058
0.058
0.052
0.047
0.047
0.042
0.037
Outside Dia.
Width
0.375" from
mounting plane
Lead Dia.
Lead Space
Copyright © 2009 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
Manufacturer of Passive Components
800-684-5322 Inside US
949-453-1811 Outside US
REV 05.07.09
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