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POE30P-33L_15 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Flyback Transformers
Document 460-1
Flyback Transformers For3Watt,7Wattand13Watt
PoE Applications
• Flyback transformers for PoE applications
• Designed to operate in continuous mode at 250 kHz with an
input of 36 – 72 Vdc
• 1500Vrms, one minute isolation from primary and bias to second­
ary; 500 Vrms, 1 minute isolation between all other windings
Designer’s Kit  C395 contains two of each part shown in bold
Core material Ferrite
Terminations  RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight  POE13P: 6.15 g;  POE70P: 3.85 g; POE30P: 2.05 g
Ambient temperature  –40°C to +85°C
Storage temperature  Component: –40°C to +85°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
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Inductance Inductance
Leakage
Part
Power   at 0 A2
  at Ipk3
DCR max (Ohms)4
 
inductance
Turns ratio6
 
  Ipk3
  number1 (W) ±10% (µH) min (µH) pri  bias  sec max (µH)5 pri : sec  pri : bias (A)
  Output7
POE30P-33L_ 3
310
POE30P-50L_ 3
310
POE30P-12L_ 3
310
279.0 1.02 2.01 0.066 4.75
279.0 1.02 2.01 0.118 4.50
279.0 1.04 2.01 0.700 4.25
1 : 0.19
1 : 0.28
1 : 0.70
1 : 0.70
1 : 0.70
1 : 0.70
0.3 3.3 V, 0.91 A
0.3 5.0 V, 0.6 A
0.3 12 V, 0.25 A
POE70P-33L_ 7
155
POE70P-50L_ 7
155
POE70P-12L_ 7
155
139.5 0.414 0.822 0.036 4.00
139.5 0.414 0.822 0.060 3.60
139.5 0.414 0.822 0.343 3.25
1 : 0.19
1 : 0.262
1 : 0.667
1 : 0.667
1 : 0.667
1 : 0.667
0.65 3.3 V, 2.12 A
0.65 5.0 V, 1.4 A
0.65 12 V, 0.6 A
POE13P-33L_ 13
127
POE13P-50L_ 13
127
POE13P-12L_ 13
127
POE13P-19L_ 13
127
POE13P-24L_ 13
127
114.3
114.3
114.3
114.3
114.3
0.255
0.222
0.199
0.290
0.255
0.310
0.348
0.308
0.355
0.315
0.024
0.039
0.065
0.066
0.067
1.25
0.950
0.650
0.800
0.600
1 : 0.166
1 : 0.25
1 : 0.50
1 : 0.567
1 : 0.667
1 : 0.50
1 : 0.50
1 : 0.50
1 : 0.50
1 : 0.50
1.0 3.3 V, 4.0 A
1.0 5.0 V, 2.6 A
1.0 12 V, 1.08 A
1.0 19.5 V, 0.67 A
1.0 24 V, 0.54 A
1. When ordering, please specify packaging code:
POE30P-12LD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape.
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, 0.1 Vrms, 0 Adc.
3. Ipk is peak primary current drawn at minimum input voltage.
4. DCR for the secondary is per winding.
5. Leakage inductance measured between pins 3 and 4 with all other pins
shorted.
6. Turns ratio is with the secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Bias
winding output is 12 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Schematics
POE13P
8
3
7
Pri
Sec
4
9
2
10
Bias
1
Secondary windings to be con-
nected in parallel on PC board
POE70P, POE30P
6
3
5
Pri
Sec
4
7
2
8
Bias
1
Secondary windings to be con-
nected in parallel on PC board
Document 460-1  Revised 05/04/12