POE300F-33LB Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Flyback Transformers

Document 522 -1
Flyback Transformers For30Watt
PoE Applications
• Designed to meet 30 W PoE IEEE 802.3at-2009 standard.
• Operates at 250 kHz with 36 – 72 Volts input.
• Isolation: 1500 Vrms, one minute pri to sec; 500 Vrms pri to aux
Designer’s Kit C398 contains three samples of each part.
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  11.9 g
Ambient temperature  –40°C to +125°C
Storage temperature  Component: –40°C to +125°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 13″ reel  Plastic tape:  44 mm wide, 0.4 mm thick,
32 mm pocket spacing, 11.9 mm pocket depth
PCB washing  Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.

Part
  _number1
Inductance Inductance
Leakage
  _{at 0 A}2
  _{at Ipk}3
DCR max (Ohms)   _inductance5   Turns ratio⁶
±10% (µH) min (µH) ^  pri^{4  } sec⁴ aux max (µH) pri : sec pri : aux
POE300F-33L_ 42.0
POE300F-50L_ 42.0
POE300F-12L_ 42.0
POE300F-19L_ 42.0
POE300F-24L_ 42.0
37.8
0.070 0.0023 0.220 3.00
1 : 0.09 1 : 0.33
37.8
0.069 0.0050 0.225 1.60
1 : 0.14 1 : 0.33
37.8
0.061 0.015 0.195 0.545
1 : 0.33 1 : 0.33
37.8
0.060 0.037 0.195 0.430
1 : 0.56 1 : 0.33
37.8
0.060 0.055 0.195 0.310
1 : 0.67 1 : 0.33
  _Ipk3
(A) ^  Output⁷
2.6   3.3 V, 9 A
2.6   5 V, 6 A
2.6   12 V, 2.5 A
2.6   19.5 V, 1.5 A
2.6   24 V, 1.25 A
1. When ordering, please specify packaging code:
POE300F-50LD
Packaging: D = 13″ machine-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 250 kHz, 0.7 Vrms, 0 Adc.
3. Peak primary current drawn at minimum input voltage.
4. DCR is with the windings connected in parallel.
5. Leakage inductance is for the primary winding with the secondary wind-
ings shorted.
6. Turns ratio is with the primary and the secondary windings connected in
parallel.
7. Output is with the secondary windings connected in parallel. Output of
the auxiliary winding is 12 V
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
12
1
11
2
10
Pri
Sec
4
9
3
8
5
7
Aux
6
The primary windings and the secondary
windings to be connected in parallel on
the PC board.
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 522-1  Revised 03/15/12
© Coilcraft Inc. 2013
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.