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Document 535 -1
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Shielded Power Inductors SER1052
High current, low DCR shielded power inductors
10.2 11 mm base; only 5.2 mm tall
Designers Kit C421 contains 3 of each value
Core and winding loss See www.coilcraft.com/coreloss
Core material Ferrite
Terminations RoHS compliant tin-silver over tin over nickel over phos
bronze (pins 1 and 2); matte tin over nickel over phos bronze (pin 3).
Other terminations available at additional cost.
Weight 1.6 g
Ambient temperature 40C to +85C with (40C rise) Irms current.
Maximum part temperature +125C (ambient + temp rise). Derating.
Storage temperature Component: 40C to +125C.
Tape and reel packaging: 40C to +80C
Resistance to soldering heat Max three 40 second reflows at
+260C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 200/7 reel; 700/13 reel Plastic tape: 24 mm wide,
0.4 mm thick, 16 mm pocket spacing, 5.45 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
5 6
1. Please specify termination and packaging codes:
Isat (A) Irms(A)
Inductance DCR SRF
2 3 4
20% max typ 10% 20% 30% 20C 40C
SER1052-572MLD
1
Part number (H) (mOhm) (MHz) drop drop drop rise rise
Termination: L = RoHS compliant tin-silver over copper
SER1052-801ML_ 0.80 4.0 100 24.9 25.2 25.6 12.5 16.3
(pins 1 and 2); matte tin over nickel over
SER1052-102ML_ 1.0 4.0 95 16.5 17.0 17.5 12.5 16.3
phos bronze (pin 3).
Special order:
SER1052-122ML_ 1.2 6.0 91 20.5 21.0 21.3 11.0 15.0
T = RoHS tin-silver-copper (95.5/4/0.5)
SER1052-132ML_ 1.3 4.0 81 12.9 16.8 17.2 12.5 16.3
or S = non-RoHS tin-lead (63/37).
SER1052-152ML_ 1.5 4.0 75 13.5 14.0 14.5 11.0 15.0
Packaging: C = 7 machine-ready reel. EIA-481 em-
SER1052-182ML_ 1.8 6.0 70 13.3 13.8 14.3 11.0 15.0
bossed plastic tape (200 parts per full
reel).
SER1052-202ML_ 2.0 9.0 65 15.3 15.8 16.2 8.5 11.5
B = Less than full reel. In tape, but not
SER1052-222ML_ 2.2 4.0 58 8.9 9.6 10.0 12.5 16.3
machine ready.
SER1052-252ML_ 2.5 7.5 55 11.4 11.8 12.1 9.0 12.0
To have a leader and trailer added ($25
SER1052-322ML_ 3.2 6.0 53 7.3 7.8 8.5 11.0 15.0
charge), use code letter C instead.
SER1052-402ML_ 4.0 9.0 47 8.3 8.5 8.8 8.5 11.5
D = 13 machine-ready reel. EIA-481 em-
bossed plastic tape. Factory order only,
SER1052-432ML_ 4.3 7.5 44 6.4 6.8 7.0 9.0 12.0
not stocked (700 parts per full reel)
SER1052-572ML_ 5.7 9.0 35 5.4 5.8 6.0 8.5 11.5
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc on an
Agilent/HP 4284A or equivalent.
3. DCR measured on a micro-ohmmeter.
4. SRF measured using an Agilent/HP 4395A network
analyzer and an Agilent/HP 16193A test fixture.
5. DC current at 25C that causes the specified inductance
drop from its value without current.
Click for temperature derating information.
6. Current that causes the specified temperature rise from
25C ambient. This information is for reference only and
does not represent absolute maximum ratings.
Click for temperature derating information.
7. Electrical specifications at 25C.
Refer to Doc 362 Soldering Surface Mount Components
before soldering.
Document 535-1 Revised 09/09/15
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2017
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.Document 535-2
Shielded Power Inductors - SER1052 Series
Typical L vs Frequency Typical L vs Current
7 7
5.7 H 5.7 H
6 6
5 5
4 4
3.2 H
3.2 H
3 3
2.0 H
2.0 H
2 2
1.3 H
1.3 H
1 1
0.8 H
0.8 H
0 0
0.1 110 100 0.1 110 100
Frequency (MHz) Current (A)
Prior to 2012, parts may have
been marked differently
0.433 0.008
11,0 0,20
1
2
0.402 0.008
10,2 0,20
3
Terminal 3 is
for mounting
stability only.
Internal
code
0.205
max
5,20
0.069 0.28 0.079
Recommended
1,75 7,1 2,00
Land Pattern
0.087
1
2,20
0.152 0.087
0.118 0.125
3
3,85
2,20
3,00 3,18
0.087 0.118
2
2,20 3,00
inches 0.091 0.215 0.134
Dimensions are in
mm 2,30 5,47 3,40
Document 535-2 Revised 09/09/15
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2017
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.
Inductance (H)
SER1052-XXXL
XXXXY
Inductance (H)