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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



RoHS compliant

For more information and specification about the part.

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Count Unit price
1 $7.22
175 $5.79
700 $3.48
1400 $2.71
2800 $2.33
5000 $2.14

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Electrical specifications at 25°C.

Part number 1
(Hover for schematics)
Power (W) Input Voltage (V) Inductance
min (µH) 2
DCR max (mΩ) 3 Leakage
max (µH) 4
Turns Ratio 5 Frequency (kHz) Isolation
Voltage (Vrms) 6
Output (V, A)
Pri Sec Sync Bias Pri : Sec : Sync : Bias
FCT1-195D3SL_ 30 36 72 72.9 27.5 32.0 160.0 250.0 0.235 1 : 1.44 : 0.44 : 0.88 250 1500 19.5 V , 1.55 A
  1. When ordering, please specify packaging code: e.g. FCT1-240D3SLD
  2. Inductance is measured at 250 kHz, 0.2 Vrms, 0 Adc.
  3. DCR for the primary and secondary is with the windings connected in parallel.
  4. Leakage inductance is for the primary windings with the secondary windings shorted.
  5. Turns ratio is with the primary windings and the secondary windings connected in parallel.
  6. 1500 Vrms winding to winding isolation.


  • L = RoHS tin-silver over 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)


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 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.
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):



The primary windings and the secondary windings are to be
connected in parallel on the PC board.
Transformer Recommended
output inductor
FCT1-33D3SL SER2013-472
FCT1-50D3SL SER1360-103
FCT1-120D3SL MSS1278-563
FCT1-195D3SL MSS1278-154
FCT1-240D3SL MSS1278-224

These inductors are recommended for 30% ripple current. Ripple less than 30% may require the use of physically larger inductors. Allowing higher ripple current to make use of smaller inductors may create a risk of discontinuous output current.

Physical characteristics



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 FCT1-xxD3SLorientation.gif
175 330 100 13 50,4 44,4 44 32 4 2 12,0 0,4

General specification

Core Material:
10.1 – 10.7 g
175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 12.0 mm pocket depth


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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