Document 635
15 W Forward Mode Transformers
•ꢀDesigned for 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 the
secondary
Core 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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
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
inductance4
max (µH)
Input
voltage
range (V)
DCR max (mOhms)3
Turns ratio5
Part
Inductance2
nom (µH)
number1
pri
sec
aux
pri : sec
pri : aux
Output6
FCT1-33M2SL_
FCT1-50M2SL_
FCT1-90M2SL_
FCT1-120M2SL_
FCT1-150M2SL_
705
705
705
705
705
55
55
55
55
55
6.0
13.5
33.5
46.5
72.5
320
320
320
320
320
0.510
0.425
0.340
0.340
0.310
36 – 75
36 – 75
36 – 75
36 – 75
36 – 75
1 : 0.24
1 : 0.33
1 : 0.57
1 : 0.71
1 : 0.90
1 : 0.67
1 : 0.67
1 : 0.67 9.0 V, 1.67 A
1 : 0.67 12 V, 1.25 A
1 : 0.67
3.3 V, 4.6 A
5.0 V, 3.0 A
15 V, 1.0 A
1. When ordering, please specify a packaging code:
FCT1-50M2SLD
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic tape
(175 parts per full reel).
Dot above pin1
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 is measured at 250 kHz, 0.5 Vrms, 0 Adc.
0.500
12,70
max
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 is
10 V, 20 mA.
0.004/0,10
0.039
1,00
7. Electrical specifications at 25°C.
0.699
17,75
max
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.512
13,00
0.061
1,55
0.590
14,99
1
10
9
0.050
1,27
0.028
0,70
Primary
1
6
5
Secondary
2
Recommended
Land Pattern
0.530
13,46
max
7
6
4
Auxiliary
1
10
0.098
2,50
0.098
2,50
5
Secondary windings to be con-
nected in parallel on PC board.
inches
mm
Dimensions are in
Document 635 Revised 02/18/09
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
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.