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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

MSD1278 Series

Common Mode Chokes

RoHS compliant AEC-Q flag
Our MSD1278 Series common mode chokes provide both common-mode and differential-mode filtering in a single device. They are ideal for use in both power line and signal line applications, providing 500 Vrms, one minute winding-to-winding isolation.
  • Common mode and differential mode filtering in a single device
  • Ideal for use in both power line and signal line applications
  • Up to 110 MHz differential mode cutoff frequency
  • 500 Vrms, one minute winding-to-winding isolation
Refer to Designing Common Mode Filters for design guidance.
Buy Now:
Count Unit price
1 $2.58
250 $1.67
500 $1.01
1000 $0.79
2500 $0.67
5000 $0.61

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

. in stock, ready to ship today.
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Specifications

Electrical specifications at 25°C.

Part number 1 Lines Common mode
peak impedance (kΩ)
Cutoff
frequency (MHz) 2
Inductance
min (µH) 3
Irms (A) 4 DCR max (Ω) 5 Isolation
Voltage (Vrms) 6
MSD1278-472ML_ 2 7.74 @ 32.0 MHz 110 3.8 3.16 0.038 500
MSD1278-562ML_ 2 7.70 @ 25.0 MHz 81.0 4.5 2.87 0.046 500
MSD1278-682ML_ 2 9.71 @ 22.0 MHz 63.0 5.4 2.81 0.048 500
MSD1278-822ML_ 2 10.77 @ 21.0 MHz 87.0 6.6 2.76 0.050 500
MSD1278-103ML_ 2 11.29 @ 19.0 MHz 58.0 8.0 2.56 0.058 500
MSD1278-123ML_ 2 13.41 @ 17.0 MHz 57.0 9.6 2.48 0.062 500
MSD1278-153ML_ 2 17.44 @ 16.0 MHz 53.0 12 2.30 0.072 500
MSD1278-183ML_ 2 16.96 @ 15.0 MHz 43.0 14 2.18 0.080 500
MSD1278-223ML_ 2 19.54 @ 12.0 MHz 35.0 18 1.99 0.096 500
MSD1278-273ML_ 2 22.40 @ 11.0 MHz 39.0 22 1.78 0.120 500
MSD1278-333ML_ 2 39.00 @ 9.8 MHz 37.0 26 1.59 0.150 500
MSD1278-393ML_ 2 47.17 @ 9.0 MHz 42.0 31 1.54 0.160 500
MSD1278-473ML_ 2 48.28 @ 8.6 MHz 28.0 38 1.45 0.180 500
MSD1278-563ML_ 2 55.35 @ 7.7 MHz 26.0 45 1.41 0.190 500
MSD1278-683ML_ 2 63.59 @ 6.8 MHz 22.0 54 1.35 0.210 500
MSD1278-823ML_ 2 76.76 @ 6.1 MHz 22.0 66 1.16 0.280 500
MSD1278-104ML_ 2 79.30 @ 5.8 MHz 22.0 80 1.13 0.300 500
MSD1278-124KL_ 2 95.79 @ 4.9 MHz 18.0 108 0.96 0.410 500
MSD1278-154KL_ 2 80.01 @ 4.3 MHz 23.0 135 0.91 0.460 500
MSD1278-184KL_ 2 82.56 @ 3.9 MHz 13.0 162 0.86 0.510 500
MSD1278-224KL_ 2 114.90 @ 3.7 MHz 13.0 198 0.74 0.690 500
MSD1278-274KL_ 2 140.00 @ 2.9 MHz 12.0 243 0.65 0.900 500
MSD1278-334KL_ 2 101.70 @ 2.8 MHz 9.4 297 0.61 1.020 500
MSD1278-394KL_ 2 87.12 @ 2.6 MHz 9.4 351 0.58 1.120 500
MSD1278-474KL_ 2 159.60 @ 2.3 MHz 11.0 423 0.50 1.430 500
MSD1278-564KL_ 2 142.60 @ 2.2 MHz 8.7 504 0.47 1.690 500
MSD1278-684KL_ 2 165.00 @ 1.9 MHz 7.4 612 0.41 2.290 500
MSD1278-824KL_ 2 138.00 @ 1.8 MHz 6.9 738 0.39 2.550 500
MSD1278-105KL_ 2 154.00 @ 1.7 MHz 6.0 900 0.37 2.830 500
Notes
  1. When ordering, please specify termination and packaging codes: e.g. MSD1278-105KLC
  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. Irms: 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.
  5. DCR is for each winding, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  6. Interwinding isolation (hipot) tested for one minute.

Termination:

  • L = 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 (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.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C with 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):

Performance curves

Attenuation (Ref: 50 Ohms)

Impedance vs Frequency

Schematics

schematic.png

Physical characteristics

msd1278d.gif

dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif


 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_o.gif
500 330 100 13 30,4 24,4 24 16 4 2 8,7 0,5

General specification

Core Material:
Ferrite
Weight:
3.7 – 4.4 g
Winding to Winding Isolation:
500 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

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