Actual Size
MIL DASH #
SRF MINIMUM (MHz)
DASH NUMBER*
INDUCTANCE (µH)
Q MINIMUM
TEST FREQUENCY (MHz)
DC RESISTANCE
MAXIMUM (OHMS)
CURRENT RATING
MAXIMUM (mA)
TOLERANCE
SERIES 1840R
1840
Molded Unshielded RF Coils
Military Specifications
MS75008 (LT4K); MS75101 (LT10K)
Physical Parameters
Inches Millimeters
Length 0.437 ± 0.010 11.10 ± 0.25
Diameter 0.187 ± 0.010 4.75 ± 0.25
Lead Size
AWG #22 TCW 0.025 ± 0.002 0.635 ± 0.051
Lead Length 1.44 ± 0.12 36.58 ± 3.05
Current Rating at 90°C Ambient
LT4K 35°C Rise
LT10K 15°C Rise
Operating Temperature Range
LT4K
–
55°C to +125°C;
LT10K
–
55°C to +105°C
Maximum Power Dissipation at 90°C
LT4K 0.385 W
LT10K 0.165 W
Weight Max. (Grams) 0.95
Marking DELEVAN; inductance with units and tolerance;
date code (YYWWL). Note: An R before the date code
indicates a RoHS component.
Example: 1840R-18K
Front: Reverse:
DELEVAN 3.3uH±10%
3.3uH±10% R 0910A
Packaging Tape & reel: 12" reel, 2500 pieces max.; 14"
reel, 3000 pieces max.
gNo MS # Issued
Made in the U.S.A.
RF Inductors
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814 • E-mail: apisales@delevan.com • www.delevan.com
M
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A
R
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A
P
P
R
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V
E
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MS75008– SERIES 1840 PHENOLIC CORE (LT4K)
-00M
-02M
-04M
-05M
-06M
-07K
-08K
-09K
-10K
-11K
-12K
-13K
-14K
-16K
MS75101– SERIES 1840 IRON CORE (LT10K)
-18K
-20K
-22K
-24K
-26K
-28K
-30K
-32K
-34K
-35K
-36K
-38K
3050
2820
2360
1860
1860
1670
1520
1240
1050
835
755
610
555
525
1020
900
775
670
580
560
455
385
324
265
251
214
0.030
0.035
0.050
0.080
0.080
0.100
0.120
0.180
0.250
0.400
0.485
0.740
0.900
1.100
0.120
0.155
0.210
0.280
0.375
0.400
0.600
0.850
1.200
1.800
2.000
2.750
510
415
350
300
300
270
250
220
200
180
170
150
140
120
70
65
60
50
50
48
42
36
30
30
24
22
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
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
55
55
55
55
55
55
55
55
55
35
35
35
35
35
35
35
35
35
35
35
35
50
55
60
60
65
± 20%
± 20%
± 20%
± 20%
± 20%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
± 10%
0.15
0.22
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
21
22
23
g
24
25
26
27
28
29
30
31
32
33
1
2
3
4
5
6
7
8
9
10
11
12
Optional Tolerances: 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
Parts listed above are QPL/MIL qualified
1/2009
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