AIR CORE INDUCTORS
High-Reliability Air Core Inductors
MS439RAT
MS470RAT
■
Small air core inductors feature high Q and tight tolerance.
■
High temperature materials allow operation in ambient
temperatures up to 155°C.
■
Tin-lead (Sn-Pb) terminations ensure the best possible
board adhesion.
Terminations
Tin-lead (63/37) over copper.
Ambient temperature
–55°C to +125°C with
Imax
current, +125°C
to +155°C with derated current
Storage temperature
Component: –55°C to +155°C.
Packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Temperature Coefficient of Inductance (TCL)
+5 to +70 ppm/°C
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Enhanced crush-resistant packaging
MS439RAT:
700/7″ reel Plastic tape: 12 mm wide, 0.32 mm thick,
8 mm pocket spacing, 3.3 mm pocket depth
MS470RAT:
500/7″ reel; Plastic tape: 16 mm wide, 0.28 mm thick,
8 mm pocket spacing, 3.4 mm pocket depth
PCB washing
Only pure water or alcohol recommended
SRF DCR
L
2
Percent Q
3
min
4
max
5
Imax
Weight
Part number
1
Turns (nH) tol min (GHz) (mOhm) (A) (mg)
MS439RAT2N5KSZ 1
2.5
10
145 12.5
1.1
4
31
MS439RAT5N0_SZ
2
5.0
5,2 140
6.5
1.8
4
42
MS439RAT8N0_SZ
3
8.0
5,2 140
5.0
2.6
4
52
MS439RAT13N_SZ
4 12.5
5,2 137
3.3
3.4
4
65
MS439RAT19N_SZ
5 18.5
5,2 132
2.5
3.9
4
78
MS470RAT18N_SZ
6 17.5
5,2 100
2.2
4.5
4
100
MS470RAT22N_SZ
7 22.0
5,2 102
2.1
5.2
4
110
MS470RAT28N_SZ
8 28.0
5,2 105
1.8
6.0
4
118
MS470RAT36N_SZ
9 35.5
5,2 112
1.5
6.8
4
133
MS470RAT43N_SZ 10 43.0
5,2 106
1.2
7.9
4
147
1. When ordering, please specify
tolerance
and
testing
codes:
MS470RAT43NGSZ
Tolerance: G
= 2%
J
= 5%
Testing:
Z
= COTS
H
= Group A screening per Coilcraft CP-SA-10001
N
= Group A screening per Coilcraft CP-SA-10003
2. Inductance measured at 150 MHz on an Agilent/HP 4286A or equivalent with a
Coilcraft SMD-A test fixture and correlation.
3. Q measured at 150 MHz on an Agilent/HP 4291A or equivalent with a 16193A
test fixture or equivalent.
4. SRF measured on an Agilent/HP 8753ES network analyzer or equivalent with a
Coilcraft CCF1268 test fixture. Parts with SRF >5 GHz are verified to >5 GHz
in screening
5. DCR measured on a Keithley 580 Micro-Ohmmeter or equivalent.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Dimensions are in
inches
mm
®
Document MS107-1 Revised 06/12/13
1102 Silver Lake Road
Cary, IL 60013
Phone 800-981-0363
Fax 847-639-1508
Email cps@coilcraft.com
www.coilcraft-cps.com
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specifications subject to change without notice.
Please check our web site for latest information.
© Coilcraft, Inc. 2013
AIR CORE INDUCTORS
MS439RAT / MS470RAT Air Core Inductors
L vs Frequency – MS439RAT
25
20
18.5 nH
L vs Frequency – MS470RAT
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 – MS439RAT
220
210
200
190
2.5 nH
Q vs Frequency – MS470RAT
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
30
20
10
0
-55 -40
-20
0
20
25°C
40
40
60
80
100
120
140 160
Ambient temperature (°C)
®
Document MS107-2 Revised 06/12/13
1102 Silver Lake Road
Cary, IL 60013
Phone 800-981-0363
Fax 847-639-1508
Email cps@coilcraft.com
www.coilcraft-cps.com
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specifications subject to change without notice.
Please check our web site for latest information.
© Coilcraft, Inc. 2013
