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Document 404-1
Low Profile Mini Spring
™
Inductors
• Only 2 mm tall
• High Q over a wide range of frequencies
• Low DCR and excellent current handling capability
Designer’s Kit C394
contains 10 samples each 5% part
Designer’s Kit C394-2
contains 10 samples each 2% part
Terminations
RoHS compliant tin-silver over copper. Other termina-
tions available at additional cost.
Weight
48 – 130 g
Ambient temperature
–40°C to +125°C with
Irms
current
Maximum part temperature
+140°C (ambient + temp rise).
Storage temperature
Component: –40°C to +140°C.
Tape and reel 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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
One per billion hours / one billion hours, calculated per Telcordia SR-332
Packaging
1000/7″ reel; 3500/13″ reel Plastic tape: 2 mm wide,
0.23 mm thick, 8 mm pocket spacing, 2.2 mm pocket depth
PCB washing
Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See
Doc787_PCB_Washing.pdf.
Part
number
1
1508-5N5_L_
1508-9N0_L_
1508-13N_L_
2508-16N_L_
2508-18N_L_
2508-23N_L_
2508-27N_L_
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
tol
3
5,2
5,2
5,2
5,2
5,2
5,2
5,2
Q
2
min
115
120
100
110
110
110
110
SRF min
4
(GHz)
5.0
4.0
3.0
3.0
2.9
2.6
2.3
DCR max
5
(mOhm)
2.6
3.4
3.9
5.2
6.0
6.8
7.9
Irms
6
(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. Specify
tolerance, termination
and
packaging
codes:
2508-27NJLC
Tolerance: G
= 2%
J
= 5%
Termination: L
= RoHS compliant tin-silver (96.5/3.5) over copper.
Special order: T
= RoHS tin-silver-copper
(95.5/4/0.5) or
S
= non-RoHS tin-lead (63/37).
Packaging: C
= 7″ machine-ready reel. EIA-481 embossed plastic
tape (1000 parts per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge),
use code letter C instead.
D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (3500 parts per
full reel).
2. L and Q measured at 250 MHz, 0.1 Vrms, 0 A using an Agilent/HP
4291A impedance analyzer with an Agilent/HP 16193A test fixture.
3. Tolerances in bold are stocked for immediate shipment.
4. SRF measured using an Agilent/HP 8753 network analyzer and a Coil-
craft SMD-D test fixture.
5. DCR measured using a micro-ohmmeter.
6. Current that causes a 15°C temperature rise from 25°C ambient. This
information is for reference only and does not represent absolute
maximum ratings.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 404-1 Revised 10/13/15
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 404-2
Low Profile Mini Spring™ Inductors
Typical L vs Frequency
50
45
40
27.0 nH
300
275
250
225
23.0 nH
18.0 nH
16.0 nH
13.0 nH
200
175
150
125
100
75
50
25
0
Typical Q vs Frequency
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
10000
Q factor
1
10
100
1000
10000
Frequency (MHz)
Frequency (MHz)
Dimensions are in
inches
mm
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 404-2
Revised 10/13/15
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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