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POE120PL-33L_15 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – 120 W PoE Planar Transformers
Document 1233-1
120WPoEPlanarTransformers ForActiveClamp
Forward Topology
• Designed for active clamp forward topology
• Operates at 200 kHz, with 36 – 72 Volt input
• High efficiency; excellent DCR; very low leakage inductance
• Isolation:1500 Vrms one minute primary and aux to secondary.
• Provides 0.009″ (0.229 mm) clearance above the seating plane
• Includes a 12-Volt auxiliary winding
Core material Ferrite
Terminations  Matte tin over nickel over brass.
Weight  11.1 – 11.9 g
Ambient temperature  –40°C to +125°C
Maximum part temperature  +165°C (ambient + temp rise)
Storage temperature  Component: –40°C to +125°C.
Tray or 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  36 per tray (standard; tape and reel optional)
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
  Inductance2
  Part number1
±20% (µH)
POE120PL-33L_
50
POE120PL-50L_
50
POE120PL-12L_
50
POE120PL-24L_
50
DCR max
(mOhms)
pri : sec : aux
27.6  : 1.26 : 270
18.9  : 1.26 : 123
18.9  : 6.80 : 58.5
18.9  : 13.6 : 58.5
Leakage
  inductance3
max (µH)
0.70
0.31
0.37
0.39
Turns ratio
pri : sec : aux
6 : 1 : 3.5
4 : 1 : 2.5
2 : 1 : 1
1 : 1 : 0.5
1. When ordering, please specify packaging code:
POE120PL-24LD
Packaging: Blank In trays, 36 per tray
D = Optional tape and reel (additional cost), 13″ machine-ready reel. EIA-481 embossed plastic
tape. See tape and reel specifications on page 2.
B = Optional tape and reel (additional cost), 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 200 kHz, 0.5 Vrms, 0 Adc.
3. Leakage inductance is for the primary and is measured with the secondary winding shorted.
4. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Output
3.3 V, 36 A
5.0 V, 24 A
12 V, 10 A
24 V, 5 A
Document 1233-1  Revised 07/29/15