Forward Converter Transformer
for NSC LM5015

• Developed for National Semiconductor LM5015 DC-DC Regulator
• Referenced on NSC application note AN-1724 as CA2983-CL
  and on AN-1725 as GA2983-CL
• Designed for forward topology operating at 250 kHz
• 1500 Vrms primary to secondary isolation
• Auxiliary winding output: 10 V, 20 mA
• 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

---

FCT1-50M1SL_	705	0.055 (pri) 0.0135 (sec) 0.32 (bias)	0.425	36 – 75	1 : 0.33	1 : 0.67	5 V, 3 A

1	When ordering, please specify packaging code: e.g. FCT1-50M1SLD
	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 1 V, 20 mA.
7	Ambient temperature range:	–40°C to +85°C
8	Storage temperature range:	Component: –40°C to +85°C Packaging: –55°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.