AIR CORE INDUCTORS
AT439RAT / AT470RAT Air Core Inductors
L vs Frequency – AT439RAT
25
20
18.5 nH
L vs Frequency – AT470RAT
60
55
50
43.0 nH
Inductance (nH)
Inductance (nH)
45
40
35
30
25
20
15
22.0 nH
35.5 nH
15
12.5 nH
28.0 nH
10
8.0 nH
5
5.0 nH
2.5 nH
17.5 nH
0
100
200
400
600
1000
10
100
200
400
600
1000
Frequency (MHz)
Frequency (MHz)
Q vs Frequency – AT439RAT
220
210
200
190
2.5 nH
Q vs Frequency – AT470RAT
135
130
125
120
17.5 nH
22.0 nH
28.0 nH
35.5 nH
Q factor
180
170
160
150
140
130
100
200
18.5 nH
8.0 nH
12.5 nH
Q factor
5.0 nH
115
110
105
100
95
43.0 nH
400
600
1000
90
100
200
400
600
1000
Frequency (MHz)
Frequency (MHz)
Typical Current Derating
120
110
100
Percent of rated
I
rms
90
80
70
60
50
40
30
20
10
0
-60 -40
-20
0
20
40
60
80 100 120 140 160 180 200
Ambient temperature (°C)
®
25°C
Specifications subject to change without notice.
Please check our website for latest information.
Document AT107-2
Revised 09/08/11
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Cary IL 60013
© Coilcraft, Inc. 2011
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
COILCRAFT [ Coilcraft lnc. ]
