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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

3D Model Datasheet

MSD1048 Series

Shielded Coupled Power Inductors

Coilcraft's MSD1048 Series of 1:1 coupled power inductors feature magnetic shielding for compact packaging and tight winding-to-winding coupling. They are ideal for Flyback, SEPIC, Ćuk, Zeta and other applications.

Ideal for Flyback, SEPIC, Ćuk, Zeta and other applications
Magnetic shielding allows high-density mounting
Tight winding coupling
Industry standard footprint

See Selecting inductors for SEPIC

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Part number

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Count	Unit price
1	$2.61
250	$1.71
800	$1.03
1600	$0.80
2400	$0.69
4800	$0.63

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

Tolerance

N = 30%

Termination

E = Matte tin over nickel

Packaging

D = 13" machine-ready reel

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Specifications

Electrical specifications at 25°C.

For Flyback Applications

Part number 1 (Hover for schematics)	Inductance (µH) 2	Tolerance (%)	DCR max (Ω) 3	Isolation Voltage (V)	Leakage Inductance (µH) 5	Turns Ratio
Part number 1 (Hover for schematics)	Inductance (µH) 2	Tolerance (%)	DCR max (Ω) 3	Isolation Voltage (V)	Leakage Inductance (µH) 5	Turns Ratio
MSD1048-222NE_	2.2	30	0.019	200	0.30	1 : 1
MSD1048-103ME_	10	20	0.053	200	0.40	1 : 1
MSD1048-223ME_	22	20	0.098	200	0.45	1 : 1
MSD1048-473ME_	47	20	0.21	200	0.50	1 : 1
MSD1048-683ME_	68	20	0.30	200	0.55	1 : 1
MSD1048-104ME_	100	20	0.39	200	0.80	1 : 1
MSD1048-224KE_	220	10	0.84	200	1.0	1 : 1

For SEPIC Applications

Part number 1 (Hover for schematics)	Inductance (µH) 2	Tolerance (%)	DCR max (Ω) 3	SRF typ (MHz) 4	Coupling coefficient	Leakage Inductance (µH) 5	Isat (A) 6	Irms (A)
Part number 1 (Hover for schematics)	Inductance (µH) 2	Tolerance (%)	DCR max (Ω) 3	SRF typ (MHz) 4	Coupling coefficient	Leakage Inductance (µH) 5	Isat (A) 6	both windings 7	one winding 8
MSD1048-222NE_	2.2	30	0.019	65.0	0.97	0.30	9.1	2.4	3.4
MSD1048-103ME_	10	20	0.053	27.0	>0.99	0.40	4.3	1.5	2.1
MSD1048-223ME_	22	20	0.098	17.0	>0.99	0.45	2.9	1.3	1.9
MSD1048-473ME_	47	20	0.21	12.0	>0.99	0.50	2.0	1.1	1.6
MSD1048-683ME_	68	20	0.30	9.0	>0.99	0.55	1.7	1.0	1.4
MSD1048-104ME_	100	20	0.39	7.3	>0.99	0.80	1.3	0.85	1.2
MSD1048-224KE_	220	10	0.84	4.8	>0.99	1.0	0.90	0.62	0.87

Notes

When ordering, please specify termination and packaging codes: e.g. MSD1048-224KED
Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value.
DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value.
SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value.
Leakage Inductance is for L1 and is measured with L2 shorted.
DC current at 25°C that causes a 30% (typ) inductance drop from its value without current. It is the sum of the current flowing in both windings.
Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. To predict temperature rise go to online calculator.
Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. To predict temperature rise go to online calculator.

Termination:

E = RoHS compliant matte tin over nickel over phos bronze.
T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
S = non-RoHS tin-lead (63/37). (Special order, added cost)

Packaging:

D = 13″ machine-ready reel. EIA-481 embossed plastic tape. (800 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 D instead.

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +85°C with (40°C rise) Irms current.

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

Schematics

Physical characteristics

dims_inches_mm-(1).gif

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
800	178/330	60/100	13	18,4	12,4	24	16	4	2	5,1	0,35

General specification

Core Material:

Ferrite

Weight:

1.5– 1.8 g

Packaging:

800/13″ reel Plastic tape: 24 mm wide, 0.35 mm thick, 16 mm pocket spacing, 5.1 mm pocket depth

Winding to Winding Isolation:

200 Vrms, one minute

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

MSD1048 Series

Shielded Coupled Power Inductors