AIR CORE INDUCTORS
High-Reliability Air Core Inductors
■
Only 2 mm tall
■
High Q over a wide range of frequencies
MS426RAT
MS446RAT
■
Low DCR and excellent current handling capability
■
High temperature materials allow operation in ambient
temperatures up to 155°C.
board adhesion
■
Tin-lead (Sn-Pb) terminations ensure the best possible
Part number
1
MS426RAT5N5_SZ
MS426RAT9N0_SZ
MS426RAT13N_SZ
MS446RAT16N_SZ
MS446RAT18N_SZ
MS446RAT23N_SZ
MS446RAT27N_SZ
Turns
3
4
5
7
8
9
10
Inductance
2
(nH)
5.5
9.0
13.0
16.0
18.0
23.0
27.0
Percent
tolerance
5,2
5,2
5,2
5,2
5,2
5,2
5,2
Q
min
2
115
120
100
110
110
110
110
SRF min
3
(GHz)
5.0
4.0
3.0
3.0
2.9
2.6
2.3
DCR max
4
(mOhm)
2.6
3.4
3.9
5.2
6.0
6.8
7.9
Imax
(A)
4.0
4.0
4.0
4.0
4.0
4.0
4.0
Wt
(mg)
52
65
78
110
118
133
147
1. When ordering, specify
tolerance
and
testing
codes:
MS446RAT27NGSZ
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 250 MHz on an Agilent/HP 4286A or equiva-
lent with a Coilcraft SMD-A test fixture and correlation.
3. Q measured at 250 MHz on an Agilent/HP 4291A or equivalent with a
16193A test fixture or equivalent.
4. SRF measured on an Agilent/HP 8753ES or equivalent with a Coilcraft
CCF1268 test fixture.
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.
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.
Tape and reel packaging: –55°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
1000 per 7″ reel
Plastic tape: 2 mm wide, 0.23 mm thick, 8 mm pocket spacing,
2.2 mm pocket depth
®
Document MS404-1 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
MS426RAT / MS446RAT Low Profile Air Core Inductors
Typical L vs Frequency
50
45
40
27.0 nH
Typical Q vs Frequency
300
275
250
225
200
13.0 nH
16.0 nH
18.0 nH
23.0 nH
27.0 nH
Inductance (nH)
35
30
25
20
15
10
5
0
1
10
100
1000
23.0 nH
18.0 nH
16.0 nH
13.0 nH
Q factor
175
150
125
100
75
50
25
0
10000
1
10
100
1000
10000
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)
426
426
446
446
Dimensions are in
inches
mm
®
Document MS404-1 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
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