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FA2925-AL Datasheet Preview

FA2925-AL Datasheet

Flyback Transformer

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Document 608
Flyback Transformers ForSiliconLaboratories
Si3402 PD Controllers
• Designed for Power over Ethernet PD controllers for applica-
tions up to 15 Watts.
• Operates in continuous conduction mode with 36 – 72 V input
• 1500 Vrms, one minute isolationbetweenprimary and secondary
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  6.57 – 6.71 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 13reel  Plastic tape:  32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
nuPmarb te r1 Po(Ww)e r I±n1da0ut%c0ta(Aµn2Hc e) InmdauintcIt(paµknH3c ) e DCpRri m ax  (Oshemc s)4 inmLdeauaxckt(aaµgnHec)e 5
Turns ratio6
pri : sec
Ipk3
(A)
FA2924-AL_ 15
FA2805-CL_ 15
FA2925-AL_ 15
40.0
40.0
40.0
36.0
36.0
36.0
0.100 0.025
0.108 0.040
0.100 0.155
0.666
0.621
0.566
1 : 0.3
1 : 0.4
1 : 1
2.0
2.0
2.0
Output7
3.3 V,  4.5 A
5.0 V,  3.0 A
12.0 V,  1.25 A
1. When ordering, please specify packaging code:
FA2925-ALD
Packaging: D = 13machine-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 for the primary, measured at 200 kHz, 0.2 Vrms, 0 Adc.
3. Ipk is peak primary current drawn at minimum input voltage.
4. DCR for the secondary is per winding.
5. Leakage inductance measured between pins 1 and 2 with all secondary pins shorted.
6. Turns ratio is with the secondary windings connected in parallel.
7. Output is with the secondary windings connected in parallel.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.500
12,70
max
0.039
1,00
7
28
Pri Sec
1 10
9
Secondary windings to be con-
nected in parallel on PC board
0.080
2,03
0.590
14,99
Recommended
Land Pattern
1
Dimensions are in
inches
mm
0.050
1,27
0.098
2,50
1
0.530
13,46
max
5
Dot above pin1
01.76,9795max
0.512
13,00
0.004 /0,10
0.028
0,70
10
0.098
6 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
Document 608  Revised 03/15/17
© Coilcraft Inc. 2017
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.


Part Number FA2925-AL
Description Flyback Transformer
Maker Coilcraft
Total Page 1 Pages
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