4000

3500

3000

3000

3000

2700

2500

2000

2000

1700

1500

1300

1100

1000

850

720

610

1600

1400

1200

1000

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

0.020

0.025

0.030

0.030

0.030

0.040

0.045

0.070

0.070

0.100

0.120

0.160

0.230

0.280

0.380

0.540

0.750

0.11

0.14

0.19

0.28

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

5.78

5.00

5.80

6.60

7.40

8.00

8.60

8.90

9.60

9.90

10.4

10.9

11.6

11.8

12.5

13.5

14.0

15.0

15.5

16.5

400

400

400

400

400

376

352

320

288

264

240

220

200

176

160

144

132

88

80

76

72

64

56

52

48

42.4

37.6

34.4

32.0

28.8

25.6

20.8

17.6

15.2

12.8

10.4

8.00

5.76

5.36

5.04

4.72

4.48

4.24

4.00

3.76

3.60

3.44

3.20

3.04

2.88

2.80

2.72

2.64

2.48

2.40

2.24

75

75

75

65

65

65

65

60

55

50

50

45

45

45

45

45

45

55

55

60

70

65

65

60

60

65

80

75

75

75

85

80

80

75

75

75

75

65

65

65

65

65

65

65

65

65

65

65

65

60

60

60

60

60

60

60

50

50

50

50

50

45

40

40

25

25

25

25

20

20

15

15

15

10

10

10

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

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

25

25

25

25

25

25

25

25

25

25

25

25

25

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

0.79

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

0.10

0.12

0.15

0.18

0.22

0.27

0.33

0.39

0.47

0.56

0.68

0.82

1.00

1.20

1.50

1.80

2.20

2.70

3.30

3.90

4.70

5.60

6.80

8.20

10.0

12.0

15.0

18.0

22.0

27.0

33.0

39.0

47.0

56.0

68.0

82.0

100

120

150

180

220

270

300

330

360

390

430

470

510

560

620

680

750

820

910

1000

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 20%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

± 10%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

±5%

Test Methods MIL-PRF-15305 test methods, only.

MS21389-01 to MS21389-17, reference - 1944

Series

MS21390-01 to MS21390-39, reference - 1945

Series

Physical Parameters

Inches

Millimeters

Length

0.420 to 0.447

10.67 to 11.35

Diameter

0.168 to 0.193

4.27 to 4.90

Lead Size

AWG #22 TCW 0.023 to 0.027

0.584 to 0.686

Lead Length

1.30 Min.

33.02 Min.

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

Packaging Tape & reel: 12" reel, 2500 pieces max.;

14" reel, 3000 pieces max. For additional packaging

options, see technical section.

Made in the U.S.A.

MS21389 (reference) – SERIES 1944 PHENOLIC CORE

-01M

-02M

-03M

-04M

-05M

-06M

-07M

-08M

-09M

-10M

-11M

-12M

-13M

-14M

-15K

-16K

-17K

MS21390 (reference) – SERIES 1945 IRON CORE

-01K

-02K

-03K

-04K

-05K

-06K

-07K

-08K

-09K

-10K

-11K

-12K

-13J

-14J

-15J

-16J

-17J

-18J

-19J

-20J

-21J

-22J

-23J

-24J

-25J

-26J

-27J

-28J

-29J

-30J

-31J

-32J

-33J

-34J

-35J

-36J

-37J

-38J

-39J

Optional Tolerances: K = 10%

J = 5%

H = 3%

G = 2%

F = 1%

*Complete part # must include series # PLUS the dash #

For further surface finish information,

refer to TECHNICAL section of this catalog.

1944R&1945R

1944&1945

Molded Unshielded RF Coils

Series

PAGE

48

www

270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814

4/2005