Shielded RF Chokes
Special Features
• Ferrite magnetic shielded for low radiation
• High Q, high reliability
• Epoxy end-fill to protect coil from
extreme environment
• Consistent body diameter
• Dielectric strength 500Vrms
• Operating temperature: –55 to +105°C
• Color banded per MIL STD
Part
Number
8250-R10K
8250-R12K
8250-R15K
8250-R18K
8250-R22K
8250-R27K
8250-R33K
8250-R39K
8250-R47K
8250-R56K
8250-R68K
8250-R82K
8250-1R0K
8250-1R2K
8250-1R5K
8250-1R8K
8250-2R2K
8250-2R7K
8250-3R3K
8250-3R9K
8250-4R7K
8250-5R6K
8250-6R8K
8250-8R2K
8250-100K
8250-120K
8250-150K
8250-180K
8250-220K
8250-270K
8250-330K
8250-390K
8250-470K
8250-560K
8250-680K
8250-820K
8250-101K
8250-121K
8250-151K
8250-181K
8250-221K
8250-271K
8250-331K
8250-391K
8250-471K
8250-561K
8250-681K
8250-821K
L (µH)
±10%
0.10
0.12
0.15
0.18
0.22
0.27
0.33
0.39
0.47
0.56
0.68
0.82
1.0
1.2
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
Q
Min.
50
50
50
50
50
50
47
47
47
45
43
41
42
43
41
42
42
41
41
41
42
42
42
46
46
50
50
50
50
50
50
50
55
55
55
55
65
65
65
65
65
65
65
65
70
70
75
70
8250 Series
Test
SRF
Freq. (MHz)
(MHz)
Min.
25.0
25.0
25.0
25.0
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
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
400
400
400
400
400
400
325
390
264
249
221
200
156
144
128
121
108
96
88
84
72
69
62
58
53
47
41
43
38
36
33
29.4
26.5
25
23
14
12
11.2
10.5
10
9.4
8
7.3
6.9
6.5
6
5.6
4.8
DCR
Ω
Max.
0.026
0.029
0.034
0.044
0.056
0.09
0.122
0.161
0.218
0.29
0.382
0.45
0.054
0.07
0.096
0.107
0.142
0.184
0.26
0.354
0.168
0.511
0.75
0.828
1.27
1.76
2.3
0.677
0.742
0.85
0.928
1.28
1.48
1.64
2.2
1.96
2.28
2.45
2.79
3.08
3.48
4.55
5.1
5.62
6.45
8.0
8.85
10.4
I, DC*
(mA)
3000
2860
2600
2300
2050
1625
1400
1220
1060
900
790
725
2080
1840
1560
1480
1290
1130
950
815
710
680
560
535
532
368
325
596
565
526
505
429
400
380
328
349
322
311
294
277
251
231
215
205
192
174
163
151
I, Incr.**
(mA)
3000
2860
2600
2300
2050
1625
1400
1220
1060
900
790
725
2080
1840
1560
1480
1290
1130
950
815
710
680
560
535
532
368
325
235
220
200
190
180
175
160
150
140
120
95
90
85
80
70
65
60
58
55
50
45
Typical Applications
• Telecommunications
• Signal processing
• High reliability, low magnetic coupling and
densely packed board design
Notes
* Rated current to cause 35°C temperature rise
** Incremental current to cause 5% inductance
1.0
Min.
0.45
Max.
0.020
Dimensions: Inches
0.164
Max.
Also available as RoHS compliant.
Continued next page.
306 E. Alondra Blvd. Gardena, CA 90247-1059 • Phone (310) 515-1720 • FAX (310) 515-1962
wwww.jwmiller.com
18.1
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