30 W Flyback Transformers
for
PoE Plus Applications
- 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.
- Isolation: 1500 Vrms primary to secondary; 500 Vrms primary to auxiliary
- 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 C398
SPECIFICATIONS
Dimensions 
Schematic 
Tape and reel specifications
3D models
|
Part number1 Click to get parts |
L at 0 A ±10%2 (µH) |
L at Ipk min3 (µH) |
DCR (Ohms) |
Leakage L max5 (µH) |
Turns ratio6 |
Ipk3 (A) |
Output7 | |||
|---|---|---|---|---|---|---|---|---|---|---|
| pri4 | sec4 | aux | pri : sec | pri : aux | ||||||
| POE300F-33L_ | 42.0 | 37.8 | 0.070 | 0.0023 | 0.220 | 3.00 | 1 : 0.09 | 1 : 0.33 | 2.6 | 3.3 V, 9 A |
| POE300F-50L_ | 42.0 | 37.8 | 0.069 | 0.0050 | 0.225 | 1.60 | 1 : 0.14 | 1 : 0.33 | 2.6 | 5 V, 6 A |
| POE300F-12L_ | 42.0 | 37.8 | 0.061 | 0.015 | 0.195 | 0.545 | 1 : 0.33 | 1 : 0.33 | 2.6 | 12 V, 2.5 A |
| POE300F-19L_ | 42.0 | 37.8 | 0.060 | 0.037 | 0.195 | 0.430 | 1 : 0.56 | 1 : 0.33 | 2.6 | 19.5 V, 1.5 A |
| POE300F-24L_ | 42.0 | 37.8 | 0.060 | 0.055 | 0.195 | 0.310 | 1 : 0.67 | 1 : 0.33 | 2.6 | 24 V, 1.25 A |
| 1 | When ordering, please specify packaging code: e.g. POE300F-24LD | |
| 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 | 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 | Output is with the secondary windings connected in parallel. Output of the auxiliary winding is 12 V. | |
| 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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