Varnished RF Chokes
Special Features
• High Q, high self-resonant
frequency
• High voltage application on phenolic
and ferrite components
• Universal wound
• Low cost
• Varnish coated
• Operating temperature:
phenolic -55 to +125°C;
iron, ferrite -55 to +105°C
Notes
* Current to cause 35°C
maximum temperature rise
1.25
B
A
Dia.
0.025 for 0.1-22,000uh
0.032 for 25,000-500,000uh
Dimensions: Inches
Part
Number
70F107AP
70F157AP
70F227AP
70F337AP
70F477AP
70F687AP
70F757AP
70F827AP
70F106AI
70F126AI
70F156AI
70F186AI
70F226AI
70F276AI
70F336AI
70F396AI
70F476AI
70F566AI
70F686AI
70F756AI
70F826AI
70F916AI
70F105AI
70F125AI
70F155AI
70F185AI
70F225AI
70F255AI
70F275AI
70F335AI
70F395AI
70F475AI
70F565AI
70F685AI
70F755AI
70F825AI
70F915AI
70F104AI
70F124AI
70F154AI
70F184AI
70F204AI
70F224AI
70F254AI
70F274AI
70F304AI
70F334AI
70F354AI
L (µH)
±20%
0.10
0.15
0.22
0.33
0.47
0.68
0.75
0.82
1.0
±10%
1.2
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
7.5
8.2
9.1
10
12
15
±5%
18
22
25
27
33
39
47
56
68
75
82
91
100
120
150
180
200
220
250
270
300
330
350
Q
Min.
Test
Freq.
(MHz)
45
42
31
43
34
40
35
43
41
40
32
37
41
36
52
52
52
51
48
49
50
48
44
45
42
38
41
41
25
40
47
48
47
46
49
46
46
41
46
49
52
48
47
46
48
48
48
41
25
25
25
25
25
25
25
25
25
70F Series
SRF DCR
(MHz)
Ω
Min. Max.
I, DC*
(mA)
Dim.
A
Max
600
490
400
330
280
240
224
216
118
0.13
0.25
0.38
0.70
0.125
0.20
0.264
0.29
0.048
7.9
7.9
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
118
102
89
87
74
66
61
53
49
49
44
41
21
19
19
16
0.072
0.096
0.096
0.156
0.168
0.24
0.264
0.457
0.492
0.624
0.624
0.744
1.44
1.56
1.68
1.92
1666
1443
1443
1132
1091
912
870
661
637
566
566
518
288
277
267
250
2.5
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
15
13
13
12
10
9.3
9.1
8.6
8.1
7.2
6.7
6.7
3.6
3.2
3.0
2.8
2.7
2.5
2.5
2.5
2.2
2.0
2.0
2.28
2.28
2.64
2.64
2.76
3.36
3.36
3.84
4.2
4.56
4.8
4.92
7.68
8.16
8.16
8.16
10.3
11.5
12.1
13.2
13.2
13.9
14.4
229
229
213
213
208
188
188
176
169
162
158
156
139
135
135
135
120
114
111
106
106
103
102
Also available as RoHS compliant.
Continued next page.
3922
2828
2294
1690
1264
1000
870
830
2041
0.15
0.14
0.14
0.12
0.12
0.12
0.12
0.12
0.16
Dim.
B
Core
±0.03 Material
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.25
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Iron
0.16
0.16
0.16
0.16
0.16
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.16
0.16
0.16
0.16
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
0.16
0.16
0.17
0.17
0.17
0.17
0.17
0.18
0.18
0.18
0.18
0.18
0.16
0.16
0.16
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.18
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
306 E. Alondra Blvd. Gardena, CA 90247-1059 • Phone (310) 515-1720 • FAX (310) 515-1962
wwww.jwmiller.com
20.3
Varnished RF Chokes
Special Features
• High Q, high self-resonant
frequency
• High voltage application on phenolic
and ferrite components
• Universal wound
• Low cost
• Varnish coated
• Operating temperature:
phenolic -55 to +125°C;
iron, ferrite -55 to +105°C
Notes
* Current to cause 35°C
maximum temperature rise
1.25
B
A
Dia.
0.025 for 0.1-22,000uh
0.032 for 25,000-500,000uh
Dimensions: Inches
Part
Number
70F394AI
70F474AI
70F504AI
70F564AI
70F684AI
70F754AI
70F824AI
70F914AI
70F103AI
70F123AI
70F153AI
70F183AI
70F223AI
70F253AI
70F273AI
70F333AI
70F393AI
70F473AI
70F563AI
70F683AI
70F753AI
70F823AI
70F913AI
70F102AI
70F122AI
70F152AI
70F182AI
70F222AI
70F252AF
70F272AF
70F332AF
70F392AF
70F472AF
70F502AF
70F562AF
70F682AF
70F752AF
70F822AF
70F912AF
70F101AF
70F121AF
70F151AF
70F181AF
70F221AF
70F251AF
70F271AF
70F331AF
70F391AF
70F471AF
70F501AF
L (µH)
±5%
390
470
500
560
680
750
820
910
1000
1200
1500
1800
2200
2500
2700
3300
3900
4700
5600
6800
7500
8200
9100
10,000
12,000
15,000
18,000
22,000
25,000
27,000
33,000
39,000
47,000
50,000
56,000
68,000
75,000
82,000
91,000
100,000
L tested
@ 1KHz
120,000
150,000
180,000
220,000
250,000
270,000
330,000
390,000
470,000
500,000
Q
Min.
45
35
49
41
37
40
33
32
30
34
40
40
40
48
50
52
53
49
53
51
49
48
52
41
46
50
49
50
59
61
61
59
57
57
57
57
53
50
51
48
46
49
51
51
52
53
54
54
55
53
70F Series continued
SRF
DCR
Test
Freq. (MHz)
Ω
I, DC*
(MHz)
Min.
Max.
(mA)
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
0.079
2.0
1.8
1.8
1.7
1.6
1.6
1.6
1.4
1.4
1.2
1.1
0.96
0.96
0.96
0.88
0.80
0.76
0.68
0.68
0.64
0.60
0.60
0.56
0.52
0.36
0.32
0.29
0.27
0.25
0.244
0.232
0.22
0.206
0.196
0.188
0.18
0.174
0.168
0.166
0.157
15.8
16.3
18.0
19.2
19.8
22.9
22.9
24.0
24.0
33.6
37.2
42.0
45.6
45.6
45.6
51.6
57.6
64.8
69.6
78
85.2
92.4
98.4
101
100
113
128
144
115
120
134
147
168
175
189
215
222
238
250
278
97
95
91
88
87
80
80
79
79
66
63
59
57
57
57
53
51
48
46
43
41
40
39
38
50
47
44
41
46
45
43
41
38
37
36
34
33
32
31
29
Dim.
A
Max
Dim.
B
±0.03
Core
Material
0.025
0.025
0.025
0.025
0.025
0.025
0.025
0.025
0.025
0.025
0.084
0.077
0.075
0.07
0.065
0.062
0.06
0.056
0.054
0.052
288
328
374
424
468
490
540
617
704
736
48
44
41
39
37
36
34
33
30
30
0.48
0.50
0.52
0.54
0.55
0.57
0.58
0.6
0.61
0.63
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
0.18
0.18
0.19
0.19
0.2
0.21
0.21
0.22
0.22
0.22
0.22
0.23
0.24
0.26
0.26
0.26
0.27
0.28
0.3
0.31
0.31
0.33
0.33
0.33
0.3
0.3
0.32
0.33
0.34
0.35
0.35
0.37
0.38
0.4
0.4
0.41
0.43
0.43
0.43
0.44
Also available as RoHS compliant.
20.4
306 E. Alondra Blvd. Gardena, CA 90247-1059 • Phone (310) 515-1720 • FAX (310) 515-1962
wwww.jwmiller.com
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.50
0.50
0.50
0.50
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
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