AIR CORE INDUCTORS
High-Reliability Air Core Inductors
MS350RAT
MS394RAT
■
High Q over a wide range of frequencies
■
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.
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
MS350RAT:
500 per 7″ reel Plastic tape: 8 mm wide, 0.3 mm thick,
4 mm pocket spacing, 1.5 mm pocket depth
MS394RAT:
500 per 7″ reel Plastic tape: 12 mm wide, 0.3 mm thick,
4 mm pocket spacing, 1.6 mm pocket depth
SRF DCR
L
2
Percent Q
3
min
4
max
5
Part number
1
Turns (nH)
tol
min (GHz) (mOhm)
MS350RAT1N7KSZ 2
1.65
10
100 10.0
4.0
MS350RAT2N6JSZ 3
2.55
5
100
8.2
5.0
MS350RAT3N9_SZ 4
3.85
5,2
100
7.5
6.0
MS350RAT5N4_SZ 5
5.40
5,2
100
7.0
8.0
MS394RAT5N6_SZ 6
5.60
5,2
100
6.5
9.0
MS394RAT7N2_SZ 7
7.15
5,2
100
6.0
10
MS394RAT8N8_SZ 8
8.80
5,2
100
6.0
12
MS394RAT9N9_SZ 9
9.85
5,2
100
5.2
13
MS394RAT13N_SZ 10 12.55
5,2
100
4.6
14
1. When ordering, specify
tolerance
and
testing
codes:
Imax
(A)
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
MS394RAT10GSZ
Tolerance: G
= 2%
J
= 5%
Testing:
Z
= COTS
H
= Screening per Coilcraft CP-SA-10001
N
= Screening per Coilcraft CP-SA-10003
2. Inductance measured at 800 MHz on an Agilent/HP 4286A or equiva-
lent with a Coilcraft SMD-A test fixture and correlation.
3. Q measured at 800 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. 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
®
These parts are preproduction products for electrical evaluation only.
Specification subject to change without notice.
Document MS163-1
Revised 09/08/11
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2011
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
AIR CORE INDUCTORS
MS350RAT/MS394RAT Air Core Inductors
L vs Frequency – MS350RAT Series
14
12
L vs Frequency – MS394RAT Series
14
12
12.55 nH
Inductance (nH)
Inductance (nH)
10
8
6
4
2
0
100
1000
5.40 nH
3.85 nH
2.55 nH
1.65 nH
10
8
9.85 nH
8.80 nH
7.15 nH
6
4
2
0
100
1000
5.60 nH
Frequency (MHz)
Frequency (MHz)
Q vs Frequency – MS350RAT Series
250
2.55 nH 1.65 nH
3.85 nH
5.40 nH
Q vs Frequency – MS394RAT Series
250
200
7.15 nH 8.80 nH
5.60 nH
12.55 nH
9.85 nH
200
Q factor
Q factor
150
150
100
100
50
0
50
0
100
Frequency (MHz)
1000
100
Frequency (MHz)
1000
Typical Current Derating
120
110
100
90
80
70
60
50
Percent of rated
I
rms
30
20
10
0
-55 -40
-20
0
20
25°C
40
40
60
80
100
120
140 160
Ambient temperature (°C)
®
These parts are preproduction products for electrical evaluation only.
Specification subject to change without notice.
Document MS163-2
Revised 09/08/11
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2011
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
PCB Design
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