QUALITY COILS SINCE 1946
tel:
516-746-2310
fax:
516-742-2416
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Price List
email: caddell-burns@erols.com
258 East Second Street
Mineola, New York 11501-3508
MINIATURE HIGH CURRENT CHOKES
TYPE 7300
10µH-10mH 10% Tolerance
Recommended Mounting Pitch—.80″
NOTES:
1. INDUCTANCE measured on QuadTech/GenRad 1659 RLC
Digibridge at 1.0 KHz.
2. CURRENT RATING (Rated IDC) is based on 0.25 watt power dissipation
(I
2
R) for an approximate 20°C temperature rise. Depending on the
application, these units may be operated at higher currents.
The core material for the 7300 series has been chosen for optimum
current handling capability. Because this material has a relatively low
volume resistivity, the core will appear as a shunt resistance on the order of
1 Kilohm, which may have to be taken into account when determining total
power dissipation; e.g., if the induced voltage (2π fLI) across the coil is 10
volts, there will be a V
2
/R loss on the order of 0.10 watt, in addition to the
I
2
R losses associated with the winding. This is not usually a factor unless
the choke is operated at high levelsof R.F. excitation.
STANDARD VALUES:
(Other values are available on special order.)
Part No.
7300-01
7300-02
7300-03
7300-04
7300-05
7300-06
7300-07
7300-08
7300-09
7300-10
7300-11
7300-12
7300-13
7300-14
7300-15
7300-16
7300-17
7300-18
7300-19
Nominal DCR ±20%
Inductance
Ohms
10 µH
0.055
12
0.061
15
0.069
18
0.077
22
0.084
27
0.093
33
0.11
39
0.12
47
0.13
56
0.14
68
0.15
82
0.17
100
0.27
120
0.31
150
0.36
180
0.39
220
0.45
270
0.49
330
0.58
Min. SRF
MHz
9.0
8.0
7.0
6.2
5.6
5.0
4.4
3.8
3.4
3.0
2.7
2.4
2.1
1.9
1.7
1.5
1.3
1.2
1.0
Rated IDC
Amps
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.4
1.3
1.3
1.2
0.96
0.90
0.83
0.80
0.75
0.71
0.66
INCR I
Amps
2.8
2.6
2.2
2.1
1.9
1.7
1.5
1.4
1.3
1.2
1.1
0.98
0.89
0.80
0.72
0.66
0.58
0.54
0.47
3. INCREMENTAL CURRENT (INCR I) is the approximate current at
which the inductance will be decreased by 5% from its initial
(zero-DC) value because of saturation. If the current is increased
beyond INCR I, the inductance will continue to decrease as shown
by the saturation curve below.
4. DIELECTRIC WITHSTANDING VOLTAGE: 1000 VRMS.
5. OPERATING TEMPERATURE RANGE: -55° to +105°C.
6. MARKING: Printed with Caddell-Burns Part Number.
7. MATERIALS:
Coil Form: Ferrite
Magnet Wire: Per FED SPEC J-W-001177/9
Jacket:
Per MIL-I-23053/5, Class 1.
Flame Retardant IAW UL 224, Class 1.
Nominal DCR ±20%
Inductance
Ohms
390 µH
0.64
470
0.86
560
0.93
680
1.1
820
1.5
1.0 mH
2.0
1.2
2.2
1.5
3.0
1.8
3.4
2.2
3.8
2.7
4.4
3.3
5.9
3.9
7.9
4.7
8.9
5.6
12
6.8
13
8.2
14
10
17
Min. SRF
MHz
0.90
0.80
0.72
0.64
0.56
0.50
0.44
0.40
0.35
0.32
0.28
0.25
0.22
0.19
0.17
0.15
0.14
0.12
Rated IDC
Amps
0.63
0.54
0.52
0.48
0.41
0.35
0.34
0.29
0.27
0.26
0.24
0.21
0.18
0.17
0.14
0.14
0.13
0.12
INCR I
Amps
0.43
0.39
0.37
0.33
0.30
0.27
0.25
0.22
0.20
0.18
0.16
0.15
0.14
0.12
0.11
0.10
0.094
0.084
Part No.
7300-20
7300-21
7300-22
7300-23
7300-24
7300-25
7300-26
7300-27
7300-28
7300-29
7300-30
7300-31
7300-32
7300-33
7300-34
7300-35
7300-36
7300-37
TYPE 7300 TYPICAL SATURATION CURVE
CADDELL-BURNS DOES NOT SELL THRU DISTRIBUTORS. ALL SALES ARE DIRECT.
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