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
70F Series
SRF DCR
(MHz)
Ω
Min. Max.
Part
Number
L (µH)
±20%
Q
Min.
Test
Freq.
(MHz)
70F107AP
70F157AP
70F227AP
70F337AP
70F477AP
70F687AP
70F757AP
70F827AP
70F106AI
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
49
52
48
47
46
48
48
48
41
25
25
25
25
25
25
25
25
25
600
490
400
330
280
240
224
216
118
45
42
31
43
34
40
35
43
41
40
32
37
41
36
52
52
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
52
51
48
49
50
48
44
45
42
38
41
41
25
40
47
48
47
46
49
46
46
41
46
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
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
I, DC*
(mA)
Dim.
A
Max
Dim.
B
Core
±0.03 Material
0.13
0.25
0.38
0.70
0.125
0.20
0.264
0.29
0.048
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
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
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
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
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
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
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
20.3
