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Document 1332-1

Common Mode Chokes – MSD1278
AEC• Only 12.3 mm square and 8 mm high• Ideal for use in both power line and signal line applications• Common- and differential-mode filtering in a single device• Up to 110 MHz differential mode cutoff frequency• 500 Vrms, one minute winding-to-winding isolation• Can be used as coupled inductors for SEPIC applications

Q200 +85°C

Core material Ferrite
Weight: 3.7 – 4.4 gTerminations RoHS compliant matte tin over nickel over phos bronze.
Other terminations available at additional cost.
Ambient temperature –40°C to +85°C with Irms current.
Maximum part temperature +125°C (ambient + temp rise).
Storage temperature Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Winding-to-winding isolation 500 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 500/13″ reel; Plastic tape: 24 mm wide, 0.5 mm thick,
16 mm pocket spacing, 8.7 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.

0.484
max
12,3
Dot indicates pin1

1230.484max
12,3

Dash numberX

Internal code

0.317
max*
8,05

Recommended
Land Pattern
0.217
5,50.197
5,00.138
3,50.197
5,00.157
4,0

342

12

1

3

40.059
1,50.177
4,50.079
2,0* 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).

34L1L2Dimensions are ininchesmm

12

Specificationssales@coilcraft.com
subject to change without notice.
US +1-847-639-6400
Please check ourwebsite for latest information.
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 1332-1

Revised 02/16/22©
© Coilcraft
Coilcraft Inc.
Inc. 2022
2022
ThisThis productproduct may
may not
not bebe usedused inin medical
medical oror highhighriskapplications
withoutpriorCoilcraftapproval.
risk applications without prior Coilcraft approval.
Specification
Specification subject
subject toto changechange without
without notice.
notice.
PleasePlease check
check webweb sitesite forfor latest
latest information.
information.

Document 1332-2

Common Mode Chokes – MSD1278 Series
AEC

Q200 +85°C				Partnumber1

Common mode
impedancemax (kOhms)

Cutoff2
frequency (MHz)MSD1278-472ML_
MSD1278-562ML_
MSD1278-682ML_
MSD1278-822ML_
MSD1278-103ML_7.74 @ 32 MHz
7.70 @ 25 MHz
9.71 @ 22 MHz
10.77 @ 21 MHz
11.29 @ 19 MHz

11081638758

3.76
4.48
5.44
6.56
8.00

MSD1278-123ML_
MSD1278-153ML_
MSD1278-183ML_
MSD1278-223ML_
MSD1278-273ML_

13.41 @ 17 MHz
17.44 @ 16 MHz
16.96 @ 15 MHz
19.54 @ 12 MHz
22.40 @ 11 MHz

5753433539

MSD1278-333ML_
MSD1278-393ML_
MSD1278-473ML_
MSD1278-563ML_
MSD1278-683ML_

39.00 @ 9.8 MHz
47.17 @ 9.0 MHz
48.28 @ 8.6 MHz
55.35 @ 7.7 MHz
63.59 @ 6.8 MHz

MSD1278-823ML_
MSD1278-104ML_
MSD1278-124KL_
MSD1278-154KL_MSD1278-184KL_

Inductance (µH)3min    nom

DCR max4(Ohms)

Isolation(Vrms)

Irms
(A)

4.7
5.6
6.8
8.2
10

0.038
0.046
0.048
0.050
0.058

500
500
500
500
500

3.16
2.87
2.81
2.76
2.56

9.60
12.0
14.4
17.6
21.6

1215
18
22
27

0.062
0.072
0.080
0.096
0.12

500
500
500
500
500

2.48
2.30
2.18
1.99
1.78

3742
28
26
22

26.4
31.2
37.6
44.8
54.4

33
39
4756
68

0.15
0.16
0.18
0.19
0.21

500
500
500
500
500

1.59
1.54
1.45
1.41
1.3576.76 @ 6.1 MHz
79.30 @ 5.8 MHz
95.79 @ 4.9 MHz
80.01 @ 4.3 MHz
82.56 @ 3.9 MHz

2222182313

65.6
80.0
108
13516282100120150
180

0.28
0.30
0.41
0.46
0.51

500
500
500
500
500

1.16
1.13
0.96
0.91
0.86

MSD1278-224KL_
MSD1278-274KL_
MSD1278-334KL_
MSD1278-394KL_
MSD1278-474KL_

114.9 @ 3.7 MHz
140.0 @ 2.9 MHz
101.7 @ 2.8 MHz
87.12 @ 2.6 MHz
159.6 @ 2.3 MHz

1312
9.4
9.411198
243
297
351423220270330
390
470

0.69
0.90
1.02
1.121.43500
500
500
5005000.74
0.65
0.61
0.58
0.50

MSD1278-564KL_
MSD1278-684KL_
MSD1278-824KL_
MSD1278-105KL_

142.6 @ 2.2 MHz
165.0 @ 1.9 MHz
138.0 @ 1.8 MHz
154.0 @ 1.7 MHz

8.7
7.4
6.9
6.0504612
738
900

560
680
820
1000

1.69
2.29
2.55
2.83

500
500
500
500

0.47
0.41
0.39
0.37

1. When ordering, please specify termination and packaging code:
MSD1278-105KLD
Termination: L = RoHS compliant matte tin over nickel over phos bronze
Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37).
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape(not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging
codes. When ordering, simply change the last letter of your part number from B to D.
2 Frequency at which the differential mode attenuation equals −3 dB
3 Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent.
4 DCR is for each winding.
5 Interwinding isolation (hipot) tested for one minute.
6 Current that causes a 40°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

Specificationssales@coilcraft.com
subject to change without notice.
US +1-847-639-6400
Please check ourwebsite for latest information.
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 1332-2

Revised 02/16/22© Coilcraft Inc. 2022
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 1332-3

Common Mode Chokes – MSD1278 Series
Typical Attenuation (Ref: 50 Ohms)
0AEC

10Q200 +85°C

Attenuation (dB)

20304060-472-183-683-274-105

507080Common mode
Differential mode

0.1

1.0

10100

1000

Frequency (MHz)

Typical Impedance vs Frequency
1000-472-183-683-274-105100

Common mode
Differential mode

Impedance (kOhms)

10

1.0

0.1

0.01

0.001

0.0001

0.1

1.0

10100

1000

Frequency (MHz)Specificationssales@coilcraft.com
subject to change without notice.
US +1-847-639-6400
Please check ourwebsite for latest information.
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 1332-3

Revised 02/16/22© Coilcraft Inc. 2022
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.