Miniature Flyback Transformers
for Power over Ethernet
- Developed for Powered Devices (PD) in 6 Watt IEEE 802.3af compliant PoE applications
- 36 – 72 V input
- 1500 Vrms winding to winding isolation
- Versions for continuous and discontinuous modes of operation
- 12 V, 20 mA bias winding output
- Custom versions available
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations
- Samples of all values are available in Coilcraft Designer's Kit C382
SPECIFICATIONS
Dimensions 
Schematic 
Tape and reel specifications 
3D models
| Part number1 Click for samples |
L at 0 A2 ±10% (µH) |
L at Ipk3 ±10% (µH) |
DCR max (Ohms)4 | Leakage L max5 (µH) |
Turns ratio | Ipk3 (A) |
Secondary output6 |
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|---|---|---|---|---|---|---|---|---|---|---|
| pri | sec | bias | pri/sec | pri/bias | ||||||
Continuous mode7 |
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| POE60C-18L_ | 167.0 | 150.3 | 0.303 | 0.017 | 0.570 | 7.8 | 1 : 0.063 | 1 : 0.344 | 0.62 | 1.8 V, 3.3 A |
| POE60C-25L_ | 177.0 | 159.3 | 0.353 | 0.027 | 0.660 | 7.0 | 1 : 0.083 | 1 : 0.333 | 0.60 | 2.5 V, 2.4 A |
| POE60C-33L_ | 184.0 | 165.6 | 0.286 | 0.026 | 0.515 | 4.0 | 1 : 0.100 | 1 : 0.333 | 0.57 | 3.3 V, 1.8 A |
| POE60C-50L_ | 193.0 | 173.7 | 0.344 | 0.043 | 0.660 | 8.0 | 1 : 0.143 | 1 : 0.343 | 0.55 | 5.0 V, 1.2 A |
| POE60C-12L_ | 204.0 | 183.6 | 0.293 | 0.083 | 0.545 | 5.8 | 1 : 0.333 | 1 : 0.333 | 0.52 | 12.0 V, 0.5 A |
Discontinuous mode |
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| POE60D-18L_ | 75.0 | 67.5 | 0.311 | 0.018 | 0.575 | 6.7 | 1 : 0.063 | 1 : 0.344 | 1.0 | 1.8 V, 3.3 A |
| POE60D-25L_ | 80.0 | 72.0 | 0.219 | 0.018 | 0.388 | 5.0 | 1 : 0.083 | 1 : 0.333 | 0.95 | 2.5 V, 2.4 A |
| POE60D-33L_ | 85.0 | 76.5 | 0.285 | 0.026 | 0.530 | 4.0 | 1 : 0.100 | 1 : 0.333 | 0.90 | 3.3 V, 1.8 A |
| POE60D-50L_ | 90.0 | 81.0 | 0.271 | 0.033 | 0.529 | 3.1 | 1 : 0.143 | 1 : 0.357 | 0.85 | 5.0 V, 1.2 A |
| POE60D-12L_ | 95.0 | 85.5 | 0.265 | 0.074 | 0.484 | 2.4 | 1 : 0.333 | 1 : 0.333 | 0.80 | 12.0 V, 0.5 A |
| 1 | When ordering, please specify packaging code: e.g. POE60D-12LD | |
| Packaging: | D = 13"
machine-ready reel EIA 481 embossed plastic tape (400 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. |
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| 2 | Inductance is for the primary, measured at 250 kHz, 0.1 Vrms, 0 Adc | |
| 3 | Peak primary current drawn at minimum input voltage. | |
| 4 | DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator. | |
| 5 | Leakage inductance is for the primary winding with the secondary winding shorted. | |
| 6 | Output of the secondary is with the windings connected in parallel. Bias winding output is 12 V, 0.2 A. | |
| 7 | Designed to remain in continuous mode operation at power levels of 3 Watts and above. | |
| 8 | Ambient temperature range: | −40°C to +125°C |
| 9 | Storage temperature range: | Component: −40°C to +125°C Tape and reel packaging: −40°C to +80°C |
| 10 | Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. | |
| 11 | Electrical specifications at 25°C. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
| PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info. | ||
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