FCT1-33M22SL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – 25 W Forward Mode Transformers

Document 762
25 W Forward Mode Transformers
• Designed for forward topology operating at 250 kHz
• Three different outputs: 3.3 V, 5.0 V and 12 V
• 33 – 57 V input; excellent for PoE applications
• 1500 Vrms isolation from primary and bias to the secondary
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 6.5 – 6.7 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
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)
Mean Time Between Failures (MTBF) / Failures in Time (FIT)
Calculated per Telcordia SR-322 26,315,789 hours / 38 per billion hours
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 Only pure water or alcohol recommended
Part
number¹
Inductance²
nom (µH)
FCT1-33M22SL_
95
FCT1-50M22SL_
95
FCT1-120M22SL_ 95
DCR max (mOhms)³
pri sec bias
115
8.0 347
144 18.0 298
150 62.5 352
Leakage
inductance⁴
max (µH)
1.44
0.880
0.725
Input
voltage
range (V)
33 – 57
33 – 57
33 – 57
Turns ratio⁵
pri : sec pri : bias
1 : 0.16
1 : 0.25
1 : 0.53
1 : 0.63
1 : 0.53
1 : 0.53
Output⁶
3.3 V, 7.2 A
5.0 V, 4.8 A
12 V, 2.0 A
1. When ordering, please specify a packaging code:
FCT1-50M22SLD
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 is measured at 250 kHz, 0.1 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. Bias winding output is
12 V, 20 mA.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
1
Primary
2
4
6
7
Secondary
10
9
Bias
5
Secondary windings to be connected
in parallel on PC board.
0.061
1,55
1
0.590
14,99
Recommended
Land Pattern
0.050
1,27
Dimensions are in
inches
mm
0.098
2,50
0.500
12,70
max
0.039
1,00
5
0.530
13,46
max
1
Dot above pin1
0.699
17,75
max
0.512
13,00
0.004 /0,10
0.028
6 ^0,70
10
0.098
2,50
Specifications subject to change without notice.
Please check our website for latest information.
Document 762 Revised 07/24/09
© Coilcraft, Inc. 2009