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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

POE300 Flyback Transformers

for PoE Plus Applications

RoHS compliant
  • Developed for flyback applications up to 30 Watts.
  • Designed  to meet IEEE 802.3at-2009 standard.
  • Operates with 36 – 72 V input at a 250 kHz switching frequency.
  • UL Certified per File E219588
  • Samples of all values are available in Coilcraft Designer's Kit C398
Buy Now:
Count Unit price
1 $3.75
175 $3.22
700 $2.96
1400 $2.48
2800 $2.24
5000 $2.04

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

. in stock, ready to ship today.
Request a Sample:
Designer's Kit:
Kit Values Price
C398 5 (3 of each) $50.00

Specifications

Electrical specifications at 25°C.

Part number 1 Power (W) Inductance
at 0A (µH) 2
(Tolerance: ±10%)
Inductance
min at   2.6 A (µH) 3
DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Secondary
Output (V, A) 8
Pri Sec Aux Pri : Sec : Aux
POE300F-33L_ 30 42.0 37.8 0.070 0.002 0.220 3.000 1 : 0.09 : 0.33 1500 3.3 V , 9 A
POE300F-50L_ 30 42.0 37.8 0.069 0.005 0.225 1.600 1 : 0.14 : 0.33 1500 5 V , 6 A
POE300F-12L_ 30 42.0 37.8 0.061 0.015 0.195 0.545 1 : 0.33 : 0.33 1500 12 V , 2.5 A
POE300F-19L_ 30 42.0 37.8 0.060 0.037 0.195 0.430 1 : 0.56 : 0.33 1500 19.5 V , 1.5 A
POE300F-24L_ 30 42.0 37.8 0.060 0.055 0.195 0.310 1 : 0.67 : 0.33 1500 24 V , 1.25 A
Notes
  1. When ordering, please specify packaging code: e.g. POE300F-24LD
  2. Inductance is for the primary, measured at 250 kHz, 0.7 Vrms, 0 Adc.
  3. Ipk is the peak primary current drawn at minimum input voltage.
  4. DCR is with the windings connected in parallel, measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  5. Leakage inductance is for the primary with the secondary windings shorted.
  6. Turns ratio is with the primary and the secondary windings connected in parallel.
  7. Isolation: 1500 Vrms primary to secondary; 500 Vrms primary to auxiliary.
  8. Output is with the secondary windings connected in parallel. Output of the auxiliary winding is 12 V.

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 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 +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):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Schematics

poe300s.gif

The primary windings and the
secondary windings are to be
connected in parallel on the PC board.

Physical characteristics

poe300d.gif

dims_inches_mm-(3).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 part_or_c.gif
175 330 100 13 50,4 44,4 44 32 4 2 11,9 0,4

General specification

Core Material:
Ferrite
Weight:
11.9 g
Packaging:
175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 mm pocket depth

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