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FA267x and FA2732 PoE Transformers

for Silicon Laboratories Si3402

RoHS compliant
  • Specified by Silicon Laboratories for Si3402 PD Controller up to 10 W output
  • Designed for IEEE 802.3af-compliant PoE applications
  • Power inductor DO5010H-333 also specified for Si3400 circuit.
Buy Now:
Count Unit price
1 $2.92
200 $2.50
600 $2.18
1000 $1.70
2400 $1.49
5000 $1.35

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Silicon Labs Si3401/Si3402

Part number Input Voltage Output 1 Power Fsw
FA2671-AL_ 36 V 72 V 3.3 V , 3 A 10 W 400 kHz
FA2672-AL_ 36 V 72 V 5 V , 2 A 10 W 400 kHz
FA2732-AL_ 36 V 72 V 12 V , 0.83 A 10 W 400 kHz

Specifications

Electrical specifications at 25°C.

Part number 2
(Hover for schematics)
Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   1.3 A (µH)
DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Pri : Sec
FA2671-AL_ 40.0 36.0 0.098 0.023 0.395 1 : 0.3 1500
FA2672-AL_ 40.0 36.0 0.098 0.045 0.340 1 : 0.4 1500
FA2732-AL_ 40.0 36.0 0.098 0.156 0.370 1 : 1 1500
Notes
  1. Output is with the secondary windings connected in parallel.
  2. When ordering, please specify packaging code: e.g. FA2672-ALD
  3. Inductance is for the primary, measured at 400 kHz, 0.4 Vrms, 0 Adc.
  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. 1500 Vrms, one minute isolation between primary and secondary

Termination:

  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (200 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

fa2671schematic.gif

Secondary windings to be connected
in parallel on the PC board

Physical characteristics

fa2671dimensions.gif

dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T fa2671orientation.gif
200 330 100 13 38,4 32,4 32 24 4 2 11,2 0,5

General specification

Core Material:
Ferrite
Weight:
3.8 – 3.9 g
Packaging:
200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More Info.

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