Document 574 -1

Forward-Mode Transformers

For 30 Watt
Telecommunications• Designed to meet 30 W PoE IEEE 802.3at-2009 standard.
• Operates at 250 kHz with 36–72 Volts input.
• 1500 Vrms, one minute isolation, primary and bias to secondary• Bias winding output: 12 V; sync winding output: 5 VCore material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 10.1 – 10.7 g
Ambient temperature –40°C to +125°C
Storage temperature Component: –40°C to +125°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: 44 mm wide, 0.4 mm thick,
32 mm pocket spacing, 12.0 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.				 3Leakage			Recommended
DCR max (mOhms)
Turns ratio5		
PartInductance2inductance4output
number1 min (µH)
pri     sec   bias   sync max (µH) pri : sec  pri : bias  pri : sync	 Output
inductor6
FCT1-33D3SL_
FCT1-50D3SL_
FCT1-120D3SL_
FCT1-195D3SL_
FCT1-240D3SL_

72.9
72.9
72.9
72.9
72.9

27.5
27.5
27.5
27.5
27.5

5.0
10.0
28.5
32.0
72.5

250
250
250
235
235

160
160
160
120120

1 : 0.33
1 : 0.44
1:1
1 : 1.44
1 : 1.78

0.425
0.420
0.175
0.235
0.235

1:1
1:1
1:1
1 : 0.88
1 : 0.88

1. When ordering, please specify termination and packaging codes:
FCT1-240D3SLD
Termination: L = RoHS tin-silver over tin over nickel over phos bronze.
Special order: T = RoHS tin-silver-copper (95.5/4/0.5)
or S = non-RoHS tin-lead (63/37).
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 parts per full reel). Quantities less thanfull reel available: in tape (not machine ready) or withleader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our partnumbering system, Coilcraft is eliminating the needfor multiple packaging codes. When ordering, simply
change the last letter of your part number from B to D.
2. Inductance is measured at 250 kHz, 0.2 Vrms, 0 Adc.
3. DCR for the primary and secondary is with the windings connected inparallel.
4. Leakage inductance is for the primary windings with the secondary
windings shorted.
5. Turns ratio is with the primary windings and the secondary windings
connected in parallel.
6. These inductors are recommended for 30% ripple current. Ripple lessthan 30% may require the use of physically larger inductors. Allowinghigher ripple current to make use of smaller inductors may create a riskof discontinuous output current.
7. Operating temperature range –40°C to +125°C.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

12Pri
4
3

1 : 0.56
3.3 V, 9 A SER2013-472
1 : 0.565 V, 6 A
SER1360-103
1 : 0.56 12 V, 2.5 A MSS1278-563
1 : 0.44 19.5 V, 1.55 A MSS1278-154
1 : 0.44 24 V, 1.25 A MSS1278-224

11Outputinductor12Sec
10958BiasSync

67

The primary windings and thesecondary windings are to beconnected in parallel on thePC board.

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

Document 574-1

Revised 12/13/16© 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.

Document 574-2

Forward-Mode Transformers – 30 Watts
Dot indicates pin 1

Internal code

XXXXY

0.810 max
20,57
6FCT1-xxD3SL

1

Current production parts have ametal cover. Previous production
had a non-metal cover.
Dimensions are the same.

1271.181max
30,00

0.450 max
11,43
0.084
2,13

0.004 /0,100.969
24,60.827
21,0
60.028
7 0,720.130
3,300.930
23,62
10.0501,27Recommended
Land Pattern
1

Dimensions are in

120.118
3,00.118
3,0inchesmm

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

Document 574-2

Revised 12/13/16© 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.