1944R & 1945R
SERIES
1944 & 1945
Molded Unshielded RF Coils
Actual Size
Q
T
EST
IN
C
E (
µ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
F
R
EQ
TO
L
ER
A
H
)
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
IN
MIL D
D
A
S
H
N
D
U
C
A
T
A
SH
U
MB
E
R
N
#
(
R
e
f
.)
*
MS21389 (Reference) – SERIES 1944 PHENOLIC CORE
-01M
-02M
-03M
-04M
-05M
-06M
-07M
-08M
-09M
-10M
-11M
-12M
-13M
-14M
-15K
-16K
-17K
N
D
U
C
E
U
C
EN
C
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 20%
± 10%
± 10%
± 10%
F
R
EQ
U
T
A
N
C
Y (
E T
MH
EST
z
)
25
25
25
25
25
25
25
25
25
25
25
25
25
7.9
7.9
7.9
7.9
EN
SR
MA
F
MIN
XIMU
IMU
Q
MIN
C
Y (
MH
z
)
50
50
50
50
50
45
40
40
25
25
25
25
20
20
15
15
15
IMU
M (
M
75
75
75
65
65
65
65
60
55
50
50
45
45
45
45
45
45
D
C
RESISTANCE
M (OHMS)
MH
z
)
400
400
400
400
400
376
352
320
288
264
240
220
200
176
160
144
132
CURRENT RATING
MAXIMUM (mA)
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
RF Inductors
4000
3500
3000
3000
3000
2700
2500
2000
2000
1700
1500
1300
1100
1000
850
720
610
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
Marking DELEVAN; inductance with units and tolerance;
date code (YYWWL). Note: An R before the date code
indicates a RoHS component.
Example: 1944-14M
Front: Reverse:
DELEVAN 0704A
1.2uH±20%
Packaging Tape & reel: 12" reel, 2500 pieces max.; 14"
reel, 3000 pieces max.
Made in the U.S.A.
-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
MS21390 (Reference) – SERIES 1945 IRON CORE
1
2.70
2
3.30
3
3.90
4
4.70
5
5.60
6
6.80
7
8.20
8
10.0
9
12.0
10
15.0
11
18.0
12
22.0
13
27.0
14
33.0
15
39.0
16
47.0
17
56.0
18
68.0
19
82.0
20
100
21
120
22
150
23
180
24
220
25
270
26
300
27
330
28
360
29
390
30
430
31
470
32
510
33
560
34
620
35
680
36
750
37
820
38
910
39
1000
± 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%
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
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
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
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
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
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
Optional Tolerances: K = 10% J = 5% H = 3% G = 2% F = 1%
*Complete part # must include series # PLUS the dash #
For surface finish information, refer to www.delevanfinishes.com
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814 • E-mail: apisales@delevan.com • www.delevan.com
1/2009
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