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Document 672
Flyback Transformers ForSTMicroelectronicsPM8800 PoE Powered Device Controller
• Flyback transformers developed for STMicroelectronics • Operates at 250 kHz with 30 – 60 V input • Versions for 5 V and 3.3 V output in 20 Watt applications • 1500 Vrms, one minute isolation primary and bias to secondary
windings
Core material Ferrite Weight 8.3 – 8.5 g Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Ambient temperature –40°C to +125°C Storage temperature Component: –40°C to +125°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 Pa.