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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

Flyback Transformers

for TI LM5072 PD Interface

RoHS compliant
  • Developed for Texas Instruments LM5072 PD Interface for 24 Watt PoE applications
  • Specified by Texas Instruments for its POE+PHYTEREV-I/-E eval board
  • Five different outputs to match a variety of applications
  • Coilcraft's DA2257-AL,  DA2383-AL and FA2519-AL are also specified for LM5072

Buy Now:
Count Unit price
1 $4.92
175 $4.44
700 $3.76
1400 $3.14
2800 $2.84
5000 $2.58

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

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

Typical Application

Works with Texas Instruments LM5072

Part number Input Voltage Output 1 Power Fsw
Sec Aux
FA2677-AL_ 18 V 57 V 3.3 V , 7.5 A 11 V , 0.02 A 25 W 250 kHz
FA2898-AL_ 18 V 57 V 5 V , 5 A 11 V , 0.02 A 25 W 250 kHz
FA2899-AL_ 18 V 57 V 9 V , 2.8 A 11 V , 0.02 A 25 W 250 kHz
FA2900-AL_ 18 V 57 V 12 V , 2.1 A 11 V , 0.02 A 25 W 250 kHz
FA2901-AL_ 18 V 57 V 15 V , 1.7 A 11 V , 0.02 A 25 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2
(Hover for schematics)
Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   2.9 A (µH)
DCR max (mΩ) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Aux Pri : Sec : Aux
FA2677-AL_ 50.0 40.8 26.0 2.6 328 2.200 1 : 0.12 : 0.41 1500
FA2898-AL_ 50.0 40.8 26.0 4.0 315 1.050 1 : 0.18 : 0.41 1500
FA2899-AL_ 50.0 40.8 26.0 13.0 315 0.473 1 : 0.35 : 0.41 1500
FA2900-AL_ 50.0 40.8 26.0 20.0 315 0.409 1 : 0.47 : 0.41 1500
FA2901-AL_ 50.0 40.8 26.0 37.0 305 0.381 1 : 0.59 : 0.41 1500
Notes
  1. Output is with the secondary windings connected in parallel.
  2. When ordering, please specify packaging code: e.g. FA2677-ALD
  3. Inductance is for the primary, measured at 250 kHz, 0.7 Vrms, 0 Adc.
  4. DCR for the primary and the secondary is with windings connected in parallel.
  5. Leakage inductance measured on the primary windings with all secondary pins shorted.
  6. Turns ratios are with the primary windings and the secondary windings connected in parallel.
  7. 1500 Vrms isolation from primary and auxiliary to 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 (175 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 +125°C
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

fa2677schematics.gif

Primary windings and secondary windings to
be connected in parallel on the PC board.

Physical characteristics

fa2677dimensions.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 fa2677orientation.gif
175 330 100 13 50,4 44,4 44 32 4 2 11,9 0,4

General specification

Core Material:
Ferrite
Weight:
13.6 – 13.9 g
Packaging:
175 per 13″ reel; Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 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 with pure water or alcohol only. More Info.

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