SER3018H Series

High Current Shielded Power Inductors

SER3018H Series high-current, high-inductance power inductors feature a flat-wire construction, resulting in exceptionally low DC resistance. They come in a wide range of sizes and inductance values for POL, VRM, VRD, and other high power applications.

Mounting plate with three pads for excellent board adhesion
Rugged flat wire construction
Exceptionally low DC resistance
Ferrite core for flat L vs. I characteristics
Magnetically shielded to minimize EMI

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Count	Unit price
1	$4.66
250	$3.99
500	$3.48
1000	$2.71
2500	$2.33
5000	$2.15

For high volume or non-stock items, request a quote.

Tolerance

K = 10%

Termination

E = Matte tin over nickel

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Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (µH) 2 (Tolerance: ±10%)	DCR (mΩ) 3		SRF typ (MHz) 4	Isat (A) 5			Irms (A) 6
Part number 1	Inductance (µH) 2 (Tolerance: ±10%)	typ	max	SRF typ (MHz) 4	10% drop	20% drop	30% drop	20°C rise	40°C rise
SER3018H-332KE	3.3	2.56	2.82	40.0	91.0	92.5	93.6	20.0	28.0
SER3018H-472KE	4.7	2.56	2.82	30.0	59.0	61.2	62.4	20.0	28.0
SER3018H-682KE	6.8	2.56	2.82	25.0	42.0	45.0	45.9	20.0	28.0
SER3018H-103KE	10	2.56	2.82	20.0	28.0	31.2	32.1	20.0	28.0
SER3018H-153KE	15	2.56	2.82	16.0	18.0	21.2	21.9	20.0	28.0
SER3018H-223KE	22	2.56	2.82	15.0	12.0	14.0	15.0	20.0	28.0
SER3018H-333KE	33	2.56	2.82	10.0	7.0	8.7	9.6	20.0	28.0

Notes

When ordering, please specify termination code: e.g. SER3018H-333KE
Inductance measured at 500 kHz, 0.1 Vrms, using an Agilent/HP 4284A LCR meter or equivalent.
DCR measured at 25°C on a Keithley 580 micro-ohmmeter or equivalent. For other operating temperatures, use this DCR at Temperature calculator.
SRF measured using an Agilent/HP 4395A network analyzer and an Agilent/HP 16193A test fixture. Details
Isat: DC current at 25°C that causes the specified inductance drop from its value without current. Temperature derating curves.
Irms: Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Temperature derating curves.

Termination:

E= Halogen free component. RoHS compliant matte tin over nickel over phos bronz.
T = RoHS tin-silver-copper over copper(95.5/4/0.5). (Special order)
S = non-RoHS tin-lead (63/37). (Special order)

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +85°C with (40°C rise) Irms

Storage temperature range:

Component: –40°C to +125°C
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+125°C (ambient + temp rise)

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Performance curves

Inductance vs Current

Inductance vs Frequency

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

36.2 g

Packaging:

25 pieces per tray

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

SER3018H Series

High Current Shielded Power Inductors