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Document 1582-1

Shielded Coupled Inductors MSD1048H
HalogenFree• Tight coupling (k ≥ 0.97)• 200 V isolation• Ideal for use in a variety of circuits including flyback, multi-output
buck, SEPIC, Ćuk and Zeta.
• High efficiency and excellent current handling• Can also be used as two single inductors connected in series
or parallel, as a common mode choke or as a 1 : 1 transformer.
• AEC-Q200 Grade 1 (–40°C to +125°C)

AEC

Q200 +125°C

0.406
max
10,30.406max10,3123X

Dot indicates pin1
Dash number
Internal code

0.189 ±0.008*
4,8 ±0,2

12L1L2

3

4Recommended
Land Pattern

0.118
3,03

4

20.2285,820.1303,310.0792,00.094
2,40.039
1,0

10.2135,4
340.0491.25* For optional tin-lead and tin-silver-copper

terminations, dimensions are for the mounted
part. Dimensions before mounting can be
an additional 0.012 inch (0,3 mm).

Dimensions are ininchesmm

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 1582-1

Revised 09/20/23© Coilcraft Inc. 2023
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

Document 1582-2

Shielded Coupled Inductors – MSD1048H Series					
PartInductance2
DCR max3	 SRF typ4
number1(µH)(Ohms)
(MHz)
0.022
0.055
0.100
0.2120.305

5526
1712
9.0>0.95>0.97>0.97>0.98
>0.98

0.30
0.40
0.45
0.50
0.60

9.1
4.3
2.9
2.0
1.7

3.20
1.30
1.05
0.95
0.71

4.60
2.90
2.10
1.45
1.15

MSD1048H-104ME_	  100 ±20%
MSD1048H-224KE_	  220 ±10%

0.395
0.920

7.3
5.0>0.98
>0.99

1.0
1.2

1.3
0.90

0.68
0.45

1.05
0.70

1. When ordering, please specify termination code:

Coupled Inductor Core and Winding Loss Calculator

MSD1048H-224KED
Termination: E = RoHS compliant matte tin over nickel over phos bronze.
Special order: Q = RoHS tin-silver-copper (95.5/4/0.5)
or P = non-RoHS tin-lead (63/37).
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastictape. (800 parts per full reel).
2. 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 areconnected in series, inductance is four times the value.
3. 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 thevalue.
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
are connected in parallel, SRF is the same value.
5. Leakage Inductance is for L1 and is measured with L2 shorted.
6. 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.
7. Equal current when applied to each winding simultaneously that causesa 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.
8. Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. This information is for reference onlyand does not represent absolute maximum ratings. To predict temperature rise go to online calculator.
9. Electrical specifications at 25°C.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

This web-based utility allows you to enter frequency, peak-to-peak(ripple) current, and Irms current to predict temperature rise and overall
losses, including core loss. Go to online calculator.

L vs Current

L vs Frequency

Core material FerriteCore and winding loss Go to online calculator
Terminations RoHS compliant matte tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight: 1.5– 1.8 g
Ambient temperature –40°C to +125°C with Irms current.
Maximum part temperature +165°C (ambient + temp rise).
Storage temperature Component: –40°C to +165°C.
Tape and reel packaging: –40°C to +80°C
Winding-to-winding isolation 200 Vrms, one minute
Resistance to soldering heat Max three 40 second reflows at+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /85% relative humidity)
Packaging 800/13″ reel Plastic tape: 24 mm wide, 0.35 mm thick,
16 mm pocket spacing, 5.1 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.

Inductance (µH)

AEC

Q200 +125°C

MSD1048H-222NE_	   2.2 ±30%
MSD1048H-103ME_	  10 ±20%
MSD1048H-223ME_	  22 ±20%
MSD1048H-473ME_	  47 ±20%
MSD1048H-683ME_	  68 ±20%

Inductance (µH)

HalogenFree          Irms (A)Coupling
Leakage		
coefficient	 Inductance5	 Isat6
bothonetyptyp (µH)(A)
windings7 winding8

Current (A)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

Frequency (MHz)Document 1582-2

Revised 09/20/23© Coilcraft Inc. 2023
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.