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FCT1-xxL2SL Forward Converter Transformers

for 8 Watt Applications

RoHS compliant
  • Developed for Texas Instruments LM5015 Two-Switch Forward Regulator
  • Designed for forward topology operating at 250 kHz; Input voltage range: 18 – 36 V
  • Five versions for 3.3, 5, 9, 12 and 15 Volt output
  • For 15 Watt Applications, the FCT1-xxxM2SL series is recommended by NSC
Buy Now:
Count Unit price
1 $2.49
200 $1.99
600 $1.74
1200 $1.51
2400 $1.29
4800 $1.19

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

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Texas Instruments LM5015

Part number Input Voltage Output 1 Power Fsw
Sec Aux
FCT1-33L2SL_ 18 V 36 V 3.3 V , 2.4 A 10 V , 0.02 A 8 W 250 kHz
FCT1-50L2SL_ 18 V 36 V 5 V , 1.6 A 10 V , 0.02 A 8 W 250 kHz
FCT1-90L2SL_ 18 V 36 V 9 V , 0.89 A 10 V , 0.02 A 8 W 250 kHz
FCT1-120L2SL_ 18 V 36 V 12 V , 0.67 A 10 V , 0.02 A 8 W 250 kHz
FCT1-150L2SL_ 18 V 36 V 15 V , 0.53 A 10 V , 0.02 A 8 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2 Inductance
min (µH) 3
Inductance
typ (µH) 3
DCR max (mΩ) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Aux Pri : Sec : Aux
FCT1-33L2SL_ 243 324 65.0 22.5 460 0.530 1 : 0.5 : 1.39 1500
FCT1-50L2SL_ 243 324 65.0 31.0 490 0.585 1 : 0.72 : 1.39 1500
FCT1-90L2SL_ 243 324 65.0 105 490 0.570 1 : 1.17 : 1.39 1500
FCT1-120L2SL_ 243 324 65.0 150 535 0.525 1 : 1.56 : 1.39 1500
FCT1-150L2SL_ 243 324 65.0 223 470 0.600 1 : 1.89 : 1.39 1500
Notes
  1. Output is with the secondary windings connected in parallel. Auxiliary winding output is 10 V, 20 mA.
  2. When ordering, please specify packaging code: e.g. FCT1-150L2SLD
  3. Inductance is measured at 250 kHz, 0.3 Vrms, 0 Adc.
  4. DCR for the secondary is measured with the windings connected in parallel.
  5. Leakage inductance is for the primary and is measured with the secondary shorted.
  6. Turns ratio is with the secondary windings connected in parallel.
  7. 1500 Vrms primary to secondary isolation./

Termination:

  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

  • D = 13" machine-ready reel
    EIA 481 embossed plastic tape (200 parts per full reel).
  • B = Less than full reel
    In tape, but 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
Storage temperature range:
Component: –40°C to +85°C
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

fct1xxl2sls.gif

Secondary windings to be connected
in parallel on PC board.

Physical characteristics

fct1xxl2sld.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_c.gif
200 330 100 13 38,4 32,4 32 24 4 2 11,2 0,5

General specification

Core Material:
Ferrite
Weight:
4.0 – 4.3 g
Packaging:
200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth

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 with pure water or alcohol only. More info.