Series 1944 & 1945
Molded Unshielded RF Coils
MS21389 (reference) – SERIES 1944 PHENOLIC CORE
1944-01M
1944-02M
1944-03M
1944-04M
1944-05M
1944-06M
1944-07M
1944-08M
1944-09M
1944-10M 10
1944-11M 11
1944-12M 12
1944-13M 13
1944-14M 14
1944-15K 15
1944-16K 16
1944-17K 17
1
2
3
4
5
6
7
8
9
0.10 ± 20% 25
0.12 ± 20% 25
0.15 ± 20% 25
0.18 ± 20% 25
0.22 ± 20% 25
0.27 ± 20% 25
0.33 ± 20% 25
0.39 ± 20% 25
0.47 ± 20% 25
0.56 ± 20% 25
0.68 ± 20% 25
0.82 ± 20% 25
1.00 ± 20% 25
50
50
50
50
50
45
40
40
25
25
25
25
20
75 400
75 400
75 400
65 400
65 400
65 376
65 352
60 320
55 288
50 264
50 240
45 220
45 200
45 176
45 160
45 144
45 132
0.020 4000
0.025 3500
0.030 3000
0.030 3000
0.030 3000
0.040 2700
0.045 2500
0.070 2000
0.070 2000
0.100 1700
0.120 1500
0.160 1300
0.230 1100
0.280 1000
0.380 850
0.540 720
0.750 610
1.20 ± 20% 7.9 20
1.50 ± 10% 7.9 15
1.80 ± 10% 7.9 15
2.20 ± 10% 7.9 15
MS21390 (reference) – SERIES 1945 IRON CORE
1945-01K
1945-02K
1945-03K
1945-04K
1945-05K
1945-06K
1945-07K
1945-08K
1945-09K
1945-10K 10
1945-11K 11
1945-12K 12
1945-13J 13
1945-14J 14
1945-15J 15
1945-16J 16
1945-17J 17
1945-18J 18
1945-19J 19
1945-20J 20 100
1945-21J 21 120
1945-22J 22 150
1945-23J 23 180
1945-24J 24 220
1945-25J 25 270
1945-26J 26 300
1945-27J 27 330
1945-28J 28 360
1945-29J 29 390
1945-30J 30 430
1945-31J 31 470
1945-32J 32 510
1945-33J 33 560
1945-34J 34 620
1945-35J 35 680
1945-36J 36 750
1945-37J 37 820
1945-38J 38 910
1945-39J 39 1000
1
2
3
4
5
6
7
8
9
2.70 ± 10% 7.9 10
3.30 ± 10% 7.9 10
3.90 ± 10% 7.9 10
55
55
60
70
65
65
60
60
65
80
75
75
75
85
80
80
75
75
75
75
88
80
76
72
64
56
52
48
0.11 1600
0.14 1400
0.19 1200
0.28 1000
4.70 ± 10% 7.9
5.60 ± 10% 7.9
6.80 ± 10% 7.9
8.20 ± 10% 7.9
10.0 ± 10% 7.9
12.0 ± 10% 2.5
15.0 ± 10% 2.5
18.0 ± 10% 2.5
22.0 ± 10% 2.5
7.9
7.9
7.9
7.9
5.0
5.0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
1.5
0.34
0.43
0.56
0.67
0.81
1.15
1.40
1.60
2.30
3.30
3.32
3.70
3.99
4.48
5.07
900
800
720
650
590
500
460
430
360
300
290
275
265
250
235
220
170
164
158
155
150
145
142
137
135
131
128
124
123
120
115
113
110
107
104
Test Methods MIL-PRF-15305 test methods, only.
MS21389-01 to MS21389-17, reference - 1944
Series
MS21390-01 to MS21390-39, reference - 1945
Series
42.4
37.6
34.4
32.0
28.8
25.6
20.8
17.6
15.2
12.8
10.4
8.00 5.78
5.76 5.00
5.36 5.80
5.04 6.60
4.72 7.40
4.48 8.00
4.24 8.60
4.00 8.90
3.76 9.60
3.60 9.90
3.44 10.4
3.20 10.9
3.04 11.6
2.88 11.8
2.80 12.5
2.72 13.5
2.64 14.0
2.48 15.0
2.40 15.5
2.24 16.5
27.0
33.0
39.0
47.0
56.0
68.0
82.0
± 5% 2.5
± 5% 2.5
± 5% 2.5
± 5% 2.5
± 5% 2.5
± 5% 2.5
± 5% 2.5
± 5% 2.5
Physical Parameters
Inches
Millimeters
Length
Diameter
Lead Size
0.420 to 0.447 10.67 to 11.35
0.168 to 0.193 4.27 to 4.90
AWG #22 TCW 0.023 to 0.027
Lead Length 1.30 Min.
0.584 to 0.686
33.02 Min.
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 65
± 5% 0.79 0.79 60
± 5% 0.79 0.79 60
± 5% 0.79 0.79 60
± 5% 0.79 0.79 60
± 5% 0.79 0.79 60
± 5% 0.79 0.79 60
± 5% 0.79 0.79 60
Current Rating at 90°C Ambient 35°C Rise
Operating Temperature –55°C to +125°C
Maximum Power Dissipation at 90°C
Series 1944: 0.385 W
Series 1945: 0.330 W
Marking Parts are printed with DELEVAN,
Inductance Value/Tolerance, and Lot/Date Code.
Optional color banding is available; when required,
suffix Part Number with the letter “B”.
Packaging Tape & reel: 12" reel, 2500 pieces max.;
14" reel, 3000 pieces max. For additional packaging
options, see page 114.
Made in the U.S.A.
Optional Tolerances: J = 5% H = 3% G = 2% F = 1%
PAGE
43
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2/2000
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814
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