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Document 644-1
SMT Power Inductors - SER2900 Series
* Same electrical specifications as Coilcraft's SER2800 * Extremely low DCR; Current handling to >100 Amps * Third mounting pad for greater stability and board adhesion
Core material Ferrite Terminations Leads: RoHS compliant tin-silver over copper. Base pad: RoHS compliant gold over nickel over phos bronze. Other terminations available at additional cost. Weight SER2915L - 28.5 g; SER2915H - 29.7 g; SER2918H - 35.7 g Ambient temperature -40C to +85C with Irms current, +85C to +125C with derated current Storage temperature Component: -40C to +125C. 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 25 pieces per tray PCB washing Only pure water or alcohol recommended
DCR3 Inductance2 SRF (mOhms) 10% typ4 Part number1 (H) nom max (MHz) SER2915L-152KL 1.5 1.50 1.65 60 SER2915H-222KL 2.2 1.86 2.05 40 SER2915L-222KL 2.2 1.50 1.65 50 SER2918H-332KL 3.3 2.60 2.86 40 SER2915H-332KL 3.3 1.86 2.05 30 SER2915L-332KL 3.3 1.50 1.65 40 SER2918H-472KL 4.7 2.60 2.86 30 SER2915H-472KL 4.7 1.86 2.05 25 SER2915L-472KL 4.7 1.50 1.65 30 SER2918H-682KL 6.8 2.60 2.86 25 SER2915H-682KL 6.8 1.86 2.05 20 SER2915L-682KL 6.8 1.50 1.65 25 SER2918H-103KL 10 2.60 2.86 20 SER2915H-103KL 10 1.86 2.05 15 SER2915L-103KL 10 1.50 1.65 20 SER2918H-153KL 15 2.60 2.86 16 SER2915H-153KL 15 1.86 2.05 12 SER2915L-153KL 15 1.50 1.65 15 SER2918H-223KL 22 2.60 2.86 15 SER2915H-223KL 22 1.86 2.05 10 SER2915L-223KL 22 1.50 1.65 10 SER2918H-333KL 33 2.60 2.86 10 SER2915H-333KL 33 1.86 2.05 8 SER2915L-333KL 33 1.50 1.65 7
10% drop 100 100 82.0 91.0 62.0 48.0 59.0 42.0 33.0 42.0 30.0 22.0 28.0 18.0 13.0 18.0 11.5 7.5 12.0 7.0 4.5 7.0 4.0 2.0
Isat (A)5 Irms (A)6 20% 30% 20C 40C drop drop rise rise >100 >100 20 30 >100 >100 20 30 84.0 84.8 20 30 92.5 93.6 20 28 66.9 68.4 20 30 54.0 57.0 20 30 61.2 62.4 20 28 48.0 50.1 20 30 36.9 39.0 20 30 45.0 45.9 20 28 34.5 36.2 20 30 26.0 27.8 20 30 31.2 32.1 20 28 30 21.5 23.4 20 16.2 17.6 20 30 21.2 21.9 20 28 14.0 15.2 20 30 9.8 11.0 20 30 14.0 15.0 20 28 8.6 9.6 20 30 6.0 6.8 20 30 8.7 9.6 20 28 5.1 5.9 20 30 2.6 3.3 20 30
1. When ordering, specify termination code: SER2915-333KL Termination: L =RoHS compliant tin-silver over copper. Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). 2. Inductance measured at 500 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. 3. DCR measured on a Keithley 580 microohmmeter or equivalent. 4. SRF measured using an Agilent/HP 8753D network analyzer and a Coilcraft SMD-D test fixture. 5. Peak dc current at which the inductance drops the specified amount from its value without current. When Isat rating is less than Irms, Isat is the more critical specification. 6. Current that causes the specified temperature rise from 25C ambient. When Irms is greater than Isat, Isat is the more critical specification, and Irms is shown in gray type. See Temperature Rise vs Current curve on next page. 7. Electrical specifications at 25C. Refer to Doc 362 "Soldering Surface Mount Components" before soldering.
Specifications subject to change without notice. Please check our website for latest information.
Document 644-1
Revised 11/30/09
(c) Coilcraft, Inc. 2009
Document 644-2
SMT Power Inductors - SER2900 Series
1.10 max 27,9
0.200 5,08 0.208 5,28 C L 0.455 11,56 C L 0.220 5,59 0.150 3,8 0.210 5,33 0.261 0.020 6,63 0,51 0.095 2,41 0.250 6,35 Pad is for mounting stability only. Do not connect to ground or other circuits.
0.78 max 19,7
SER29XXX COILCRAFT XX
1.100 max 27,94
0.270 6,9
0.095 2,41
Recommended Land Pattern
Height (See table)
SER2915L SER2915H SER2918H
Maximum height 0.605 / 15,36 0.605 / 15,36 0.700 / 17,78
0.150 min 3,8
0.006/0,152
Dimensions are in inches mm
Temperature Rise vs Current
80
Current Derating
120 110 100
Temperature rise (from 25C)
70
Percent of rated current
60 50 40 30 20 10 0 0 10 20 30 40 50 60
90 80 70 60 50 40 20 10 0 -40 -20
25C
30 Isat Irms 0 20
40
60
80
100
120 140
Current (A rms)
Ambient temperature (C)
Specifications subject to change without notice. Please check our website for latest information.
Document 644-2
Revised 11/30/09
(c) Coilcraft, Inc. 2009
Document 644-3
SMT Power Inductors - SER2900 Series
L vs Current
100
33 H
L vs Frequency
100
33 H
Inductance (H)
Inductance (H)
22 H 15 H
22 H 15 H
10
10 H 6.8 H 4.7 H 3.3 H 2.2 H
10
10 H 6.8 H 4.7 H 3.3 H 2.2 H 1.5 H
1
SER2915L
0.1 1
1.5 H
SER2915L 1
10 100 0.1 1 10 100
Current (A)
Frequency (MHz)
100
100
33 H
33 H
Inductance (H)
Inductance (H)
22 H 15 H
22 H
10
15 H 10 H 6.8 H
10
10 H 6.8 H 4.7 H 3.3 H 2.2 H
1
4.7 H 3.3 H 2.2 H
1 SER2915H 0.1
0.1 1 10 100
SER2915H
0.1 1 10 100
Current (A)
Frequency (MHz)
100
100
33 H
33 H
Inductance (H)
22 H 15 H
Inductance (H)
22 H
10
15 H 10 H 6.8 H 4.7 H 3.3 H
10
10 H 6.8 H 4.7 H 3.3 H
1
1
SER2918H
0.1 1 10 100
0.1
SER2918H
0.1 1 10 100
Current (A)
Specifications subject to change without notice. Please check our website for latest information.
Frequency (MHz)
Document 644-3 Revised 11/30/09
(c) Coilcraft, Inc. 2009
Document 644-4
SMT Power Inductors - SER2900 Series
ESR vs Frequency
2000
SER2915L
Equivalent Series Resistance (Ohms)
1750 1500 1250 1000 750 500 250 0 0.1 1 10 100
33 H 22 15 H H 10 H
Frequency (MHz)
Equivalent Series Resistance (Ohms)
SER2915H
1750 1500 1250 1000 750 500 250 0 0.1 1
33 H 22 H
2000
10
10 H 6.8 H 4.7 H 3.3 2.2 H H
15 H
Frequency (MHz)
Equivalent Series Resistance (Ohms)
SER2918H
1500 1250 1000 750 500 250 0 0.1 1
22 H
1750
10
15 H 10 H 6.8 H 3.3 H 4.7 H
33 H
2000
Frequency (MHz)
Specifications subject to change without notice. Please check our website for latest information.
6.8 4.7 H 3.3 H 2.2 H H 1.5 H
100
100
Document 644-4
Revised 11/30/09
(c) Coilcraft, Inc. 2009

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