SMT Flyback Transformer
for
Power over Ethernet
| New RoHS part numbers are shown. Lead was removed from terminations. The second to the last character is now L to indicate RoHS compliance. (View old data sheet.) |
- Developed for Maxim MAX5941A PoE Interface/PWM Controller
- 32 – 56 V input; 3.3 V, 2.5 A output
- 1500 Vrms primary to secondary isolation; 500 Vrms primary to bias isolation
- Interleaved primary and secondary windings
- 14 V bias winding output
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations
Photo 
Pricing 
Materials declaration 
PDF data sheet
SPECIFICATIONS
Dimensions 
Schematic 
Tape and reel specifications
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| C1099-AL_ | 133.0 | 126.0 | 0.283 (pri) 0.013 (sec) 0.480 (bias) |
3.5 | 1 : 0.13 | 1 : 0.57 | 0.9 | 3.3 V, 2.5 A |
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| 1 | When ordering, please specify packaging code: e.g. C1099-ALD | |
| Packaging: | D = 13"
machine-ready reel EIA 481 embossed plastic tape (200 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 300 kHz, 1.0 Vrms. | |
| 3 | Ipk: Peak primary current drawn at minimum input voltage. | |
| 4 | Primary DCR is measured with the windings connected in series. Secondary DCR is measured with the windings connected in parallel. | |
| 5 | Leakage inductance is for the primary winding with the secondary windings shorted. | |
| 6 | Turns ratio is for the primary connected in series and the secondary connected in parallel. | |
| 7 | Output of the secondary is with the windings connected in parallel. Bias winding output is 14 V. | |
| 8 | Ambient temperature range: | –40°C to +125°C |
| 9 | Storage temperature range: | Component: –40°C to +125°C T&R 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. | ||