Forward Mode Transformers
for 15 Watt Applications

• Developed for National Semiconductor LM5015 Two-Switch Forward Regulator
• Designed for forward topology operating at 250 kHz; Input voltage range: 36 – 75 V
• FCT1-50M2S is referenced on NSC application note AN-1724 as CA2983-CL
  and on AN-1725 as GA2983-CL
• Five versions for 3.3, 5, 9, 12 and 15 Volt output
• 1500 Vrms primary to secondary isolation
• Auxiliary winding output: 10 V, 20 mA
• For 8 Watt Applications, the FCT1-xxxK2SL series is recommended by NSC
• RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations

Photo    Pricing    Materials declaration    PDF data sheet

SPECIFICATIONS

Dimensions    Schematic     Tape and reel specifications    3D models

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FCT1-33M2SL_	705	55	6.0	320	0.510	1 : 0.24	1 : 0.67	3.3 V, 4.6 A
FCT1-50M2SL_	705	55	13.5	320	0.425	1 : 0.33	1 : 0.67	5.0 V, 3.0 A
FCT1-90M2SL_	705	55	33.5	320	0.340	1 : 0.57	1 : 0.67	9.0 V, 1.67 A
FCT1-120M2SL_	705	55	46.5	320	0.340	1 : 0.71	1 : 0.67	12 V, 1.25 A
FCT1-150M2SL_	705	55	72.5	320	0.310	1 : 0.90	1 : 0.67	15 V, 1.0 A

1	When ordering, please specify packaging code: e.g. FCT1-150M2SLD
	Packaging:	D = 13" machine-ready reel EIA 481 embossed plastic tape (175 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.

2	Inductance measured at 250 kHz, 0.5 Vrms, 0 Adc.
3	DCR for the secondary is measured with the windings connected in parallel.
4	Leakage inductance is for the primary winding and is measured with the secondary windings shorted.
5	Turns ratio for secondary is with the windings connected in parallel.
6	Output of the secondary is with the windings connected in parallel. Auxiliary winding output is 10 V, 20 mA.
7	Ambient temperature range:	–40°C to +85°C
8	Storage temperature range:	Component: –40°C to +85°C T&R packaging: –40°C to +80°C
9	Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10	Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.