FCT1-xxM22SL Forward Mode Transformers

for 25 Watt PoE Applications

Designed for forward topology operating at 250 kHz; Input voltage range: 33 – 57 V
Three versions for 3.3, 5.0 and 12 Volt output
Bias winding output: 12 V, 20 mA

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Count	Unit price
1	$3.48
175	$2.99
700	$2.59
1400	$2.26
2800	$1.94
5000	$1.78

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

Packaging

D = 13" machine-ready reel

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Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Power (W)	Input Voltage (V)	Inductance min (µH) 2	DCR max (mΩ) 4			Leakage Inductance max (µH) 5	Turns Ratio 6	Frequency (kHz)	Isolation Voltage (Vrms)	Secondary Output (V, A) 7
Part number 1 (Hover for schematics)	Power (W)	Input Voltage (V)	Inductance min (µH) 2	Pri	Sec	Aux	Leakage Inductance max (µH) 5	Pri : Sec : Aux	Frequency (kHz)	Isolation Voltage (Vrms)	Secondary Output (V, A) 7
FCT1-120M22SL_	25	33 — 57	90	150	62.5	352	0.725	1 : 0.53 : 0.53	250	1500	12 V , 2 A
FCT1-33M22SL_	25	33 — 57	90	115	8.0	347	1.440	1 : 0.16 : 0.63	250	1500	3.3 V , 7.2 A
FCT1-50M22SL_	25	33 — 57	90	144	18.0	298	0.880	1 : 0.25 : 0.53	250	1500	5 V , 4.8 A

Notes

When ordering, please specify a packaging code: FCT1-50M22SLD
Inductance is measured at 250 kHz, 0.1 Vrms, 0 Adc.
1500 Vrms isolation from primary and bias to secondary.
DCR for the secondary is measured with the windings connected in parallel.
Leakage inductance is for the primary and is measured with the secondary shorted.
Turns ratio is with the secondary windings connected in parallel.
Output is with the secondary windings connected in parallel. Bias winding output is 12 V, 20 mA.

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 (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.

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):

See FIT/MTBF Calculations

Schematics

Secondary windings to be connected
in parallel on the PC board.

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
175	330	100	13	38,4	32,4	32	28	4	2	12,93	0,5

General specification

Core Material:

Ferrite

Weight:

6.5 – 6.7 g

Packaging:

175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 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. For other solvents, see Doc787_PCB_Washing.pdf.

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FCT1-xxM22SL Forward Mode Transformers

for 25 Watt PoE Applications

Selected configuration not available

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning