Document 635

15 W Forward Mode Transformers• Designed for two-switch forward topology operating at 250 kHz• Five different outputs from 3.3 V to 15 V; 36 – 75 V input• 1500 Vrms, one minute isolation from primary and aux to thesecondaryCore material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 6.9 – 7.1 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /85% relative humidity)
Packaging 175 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.						Leakage
3PartInductance2	    DCR max (mOhms) inductance4
number1nom (µH)
prisecauxmax (µH)
FCT1-33M2SL_705
55
6.0
320
0.510
FCT1-50M2SL_705
55
13.5
3200.425
FCT1-90M2SL_705
55
33.5
320
0.340
FCT1-120M2SL_705
55
46.5
3200.340
FCT1-150M2SL_705
55
72.5
3200.310

Input		5voltage       Turns ratio
range (V)pri : secpri : aux	 Output636 – 75
1 : 0.24
1 : 0.67
3.3 V, 4.6 A
36 – 75
1 : 0.33
1 : 0.67
5.0 V, 3.0 A
36 – 75
1 : 0.57
1 : 0.67 9.0 V, 1.67 A
36 – 75
1 : 0.71
1 : 0.67 12 V, 1.25 A
36 – 75
1 : 0.901 : 0.67
15 V, 1.0 A

1. When ordering, please specify a packaging code:
FCT1-50M2SLD
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. Whenordering, simply change the last letter of your part number from B to D..
2. Inductance is 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 and is measured with the secondary shorted.
5. Turns ratio is with the secondary windings connected in parallel.
6. Output is with the secondary windings connected in parallel. Auxiliary winding output is10 V, 20 mA.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Packaging:

1091Primary
20.061
1,551

0.590
14,99

Dot above pin10.500 max12,70

76Recommended
Land Pattern

6515

Dimensions are ininches
mm

0.028
0,700.530 max
13,46

Auxiliary

Secondary windings to be connected in parallel on PC board.

0.699 max
17,75
0.512
13,00

0.050
1,27

Secondary

40.004 /0,100.039
1,00

100.098
2,50

US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg

0.0982,50

Document 635

Revised 02/18/09© Coilcraft Inc. 2021
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.