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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 $1.40
250 $1.16
500 $0.97
1000 $0.76
2500 $0.66
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:

  • 13" reel, machine-ready
    EIA-481 embossed plastic tape (500 parts per full reel).
  • B = Less than full reel
    In tape, not machine ready. To have a leader and trailer added ($25 charge),
    use code letter D instead.
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):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

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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