PL
IA
NT
†
Ro
HS
CO
Varnished Chokes
70F Series
SRF
DCR
Test
Ω
Freq.
Max.
(MHz)
25
25
25
25
25
25
25
25
25
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
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
600
490
400
330
280
240
224
216
118
118
102
89
87
74
66
61
53
49
49
44
41
21
19
19
16
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
0.13
0.25
0.38
0.70
0.125
0.20
0.264
0.29
0.048
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
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
M
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
Part
Number
70F107AP-RC
70F157AP-RC
70F227AP-RC
70F337AP-RC
70F477AP-RC
70F687AP-RC
70F757AP-RC
70F827AP-RC
70F106AI-RC
70F126AI-RC
70F156AI-RC
70F186AI-RC
70F226AI-RC
70F276AI-RC
70F336AI-RC
70F396AI-RC
70F476AI-RC
70F566AI-RC
70F686AI-RC
70F756AI-RC
70F826AI-RC
70F916AI-RC
70F105AI-RC
70F125AI-RC
70F155AI-RC
70F185AI-RC
70F225AI-RC
70F255AI-RC
70F275AI-RC
70F335AI-RC
70F395AI-RC
70F475AI-RC
70F565AI-RC
70F685AI-RC
70F755AI-RC
70F825AI-RC
70F915AI-RC
70F104AI-RC
70F124AI-RC
70F154AI-RC
70F184AI-RC
70F204AI-RC
70F224AI-RC
70F254AI-RC
70F274AI-RC
70F304AI-RC
70F334AI-RC
70F354AI-RC
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
49
52
48
47
46
48
48
48
41
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
I, DC*
(mA)
3922
2828
2294
1690
1264
1000
870
830
2041
1666
1443
1443
1132
1091
912
870
661
637
566
566
518
288
277
267
250
229
229
213
213
208
188
188
176
169
162
158
156
139
135
135
135
120
114
111
106
106
103
102
Dim.
A
Max
0.15
0.14
0.14
0.12
0.12
0.12
0.12
0.12
0.16
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
0.16
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
Dim.
B
Core
±0.03 Material
0.31
0.31
0.31
0.31
0.31
0.31
0.31
0.31
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
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
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
Phenolic
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
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Notes
* Current to cause 35 °C max. temperature rise
† RoHS Directive 2002/95/EC Jan 27 2003
including Annex.
1.25
B
A
Dia.
0.025 for 0.1-22,000uh
0.032 for 25,000-500,000uh
Dimensions: Inches
“-RC” suffix indicates RoHS compliance.
Continued next page.
Tel. (877) 426-8767 • Fax (951) 781-5006
REV. 06/07
www.bourns.com
20.3
PL
IA
NT
†
Ro
HS
CO
Varnished Chokes
70F Series continued
DCR
SRF
Test
Ω
I, DC*
Freq. (MHz)
Max. (mA)
(MHz) Min.
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
M
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
Part
Number
70F394AI-RC
70F474AI-RC
70F504AI-RC
70F564AI-RC
70F684AI-RC
70F754AI-RC
70F824AI-RC
70F914AI-RC
70F103AI-RC
70F123AI-RC
70F153AI-RC
70F183AI-RC
70F223AI-RC
70F253AI-RC
70F273AI-RC
70F333AI-RC
70F393AI-RC
70F473AI-RC
70F563AI-RC
70F683AI-RC
70F753AI-RC
70F823AI-RC
70F913AI-RC
70F102AI-RC
70F122AI-RC
70F152AI-RC
70F182AI-RC
70F222AI-RC
70F252AF-RC
70F272AF-RC
70F332AF-RC
70F392AF-RC
70F472AF-RC
70F502AF-RC
70F562AF-RC
70F682AF-RC
70F752AF-RC
70F822AF-RC
70F912AF-RC
70F101AF-RC
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
@ 1 KHz
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
Dim.
A
Max
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
Dim.
B
±0.03
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
Core
Material
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
Notes
* Current to cause 35 °C max. temperature
rise
† RoHS Directive 2002/95/EC Jan 27 2003
including Annex.
1.25
B
A
Dia.
0.025 for 0.1-22,000uh
0.032 for 25,000-500,000uh
Dimensions: Inches
70F121AF-RC
70F151AF-RC
70F181AF-RC
70F221AF-RC
70F251AF-RC
70F271AF-RC
70F331AF-RC
70F391AF-RC
70F471AF-RC
70F501AF-RC
46
49
51
51
52
53
54
54
55
53
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
“-RC” suffix indicates RoHS compliance.
Tel. (877) 426-8767 • Fax (951) 781-5006
20.4
www.bourns.com
REV. 06/07
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