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© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
Flyback Transformers
Document 560
Document 560 Revised 05/11/17
For Silicon Laboratories
Si3402 PD Controller
Inductance Inductance Leakage
Part Power
at 0 A2 at Ipk3 DCR max (Ohms)4 inductance
Turns ratio6 Ipk3
number1 (W) ±10% (µH) min (µH) pri sec max (µH)5 pri : sec (A) Output
FA2671-AL_ 10 40.0 36.0 0.098 0.023 0.395 1 : 0.3 1.3 3.3 V, 3.0 A
FA2672-AL_ 10 40.0 36.0 0.098 0.045 0.340 1 : 0.4 1.3 5.0 V, 2.0 A
FA2732-AL_ 10 40.0 36.0 0.098 0.156 0.370 1 : 1 1.3 12.0 V, 0.83 A
1. When ordering, please specify packaging code:
FA2672-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (200 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 400 kHz, 0.4 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 2 and 3 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.
0.080
2,03
1
0.433
11,00
0.50
12,7
0.041
1,05
0.413
10,50
0.600
15,24max
0.460
11,68
0.024
0,60
0.050
1,27
0.098
2,50
0.098
2,50
max
max
8
1
5
4
Recommended
Land Pattern
Dot above pin1
0.004 /0,10
FA267x-AL
CCI xxxx
Secondary windings to be con-
nected in parallel on PC board
5
6
7
8
Pri Sec
2
3
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 3.8 – 3.9 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
Maximum part temperature +125°C (ambient + temp rise)
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 200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
24 mm pocket spacing, 11.2 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
• Designed for Power over Ethernet PD controllers for applica-
tions up to 10 Watts.
• Operates in continuous conduction mode with 36 – 72 V input
• 1500 Vrms, one minute isolation between primary and secondary
Dimensions are in inches
mm
