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.
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
A
D
Encapsulant
E
C
B
Size
350
394
A max
0.095
2,41
0.165
4,19
B max C max
D
E
0.135 0.060 0.055 ±0.010 0.072 ±0.010
3,43
1,52
1,40 ±0,25
1,83 ±0,25
0.135
3,43
0.062
1,58
0.055 ±0.010 0.144 ±0.012
1,40 ±0,25
3,66 ±0,30
F
F max
0.020
0,51
0.020
0,51
MS394RAT10GSZ
Tolerance: G
= 2%
J
= 5%
Testing:
Z
= COTS
H
= Screening per Coilcraft CP-SA-10001
N
= Screening per Coilcraft CP-SA-10003
C
= Custom screening (please specify when ordering)
2. Inductance measured at 800 MHz on an Agilent/HP 4286A or equivalent
with a Coilcraft SMD-A test fixture and correlation.
3. Q measured at 800 MHz on an Agilent/HP 4291A or equivalent with a
16193-A test fixture or equivalent.
4. SRF measured on an Agilent/HP 8722ES or equivalent and a test fixture
with an air gap.
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.
Strip
Length
135°
max
0° min
Suggested Land Patterns
Recommended Land Patterns
350 Size
0.031
0,79
0.040
1,02
0.097
2,46
0.040
1,02
394 Size
0.031
0,79
0.097
2,46
0.072
1,83
0.144
3,66
Dimensions are in
inches
mm
®
These parts are preproduction products for electrical evaluation only.
Specification subject to change without notice.
Document MS163-1
Revised 06/15/10
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2010
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
12.55 nH
12
Inductance (nH)
Inductance (nH)
10
8
6
4
2
0
100
1000
10
8
9.85 nH
8.80 nH
7.15 nH
5.40 nH
3.85 nH
2.55 nH
1.65 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
7.15 nH 8.80 nH
5.60 nH
12.55 nH
9.85 nH
200
200
Q factor
Q factor
150
150
100
100
50
50
0
100
1000
0
100
1000
Frequency (MHz)
Frequency (MHz)
Typical Current Derating
120
110
100
Percent of rated
I
rms
90
80
70
60
50
25°C
40
30
20
10
0
-55 -40
-20
0
20
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 06/15/10
1102 Silver Lake Road
Cary IL 60013
© Coilcraft, Inc. 2010
Phone 800-981-0363
Fax 847-639-1508
E-mail cps@coilcraft.com
Web www.coilcraft-cps.com
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