Document 409 Flyback Transformer For Maxim MAX5941A PoE Interface/PWM Controller • Designed for IEEE 802.3af-compliant PoE applications • Operates with 32 – 56 Volts input • 1500 Vrms, one minute isolation between the primary and the secondary Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 5.7 g 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 Packaging 200 per 13″ reel Plastic tape: 44 mm wide, 0.37 mm thick, 28 mm pocket spacing, 9.0 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. Part number1 Inductance at 0 A2 ±5% (µH) C1099-AL_ 133.0 Inductance DCR max (Ohms)4 at Ipk3 min (µH) pri sec bias 126.0 0.283 0.013 Leakage Turns ratio6 inductance5 Ipk3 max (µH) pri : sec pri : bias (A) Output7 0.480 1. When ordering, please specify packaging code: C1099-ALD Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic tape (200 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 300 kHz, 1.0 Vrms. 3. Peak primary current drawn at minimum input voltage. 3.5 1 12 ½ Primary XXXXY 6 7 0.865 max 21,97 0.028 0,72 0.098 2,5 0.098 2,5 0.135 3,43 0.665 16,88 Recommended Land Pattern 0.07 1,79 Secondary 6 5 12 11 ½ Primary 2 0.335 max 8,51 0.079 2,01 0.9 3.3 V, 2.5 A 8 7 1 12 C1099-AL 0.677 max 17,20 1 : 0.57 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 winding 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. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Dot indicates pin 1 1 1 :0.13 10 0.590 14,98 0.693 17,60 0.004 /0,10 Bias Dimensions are in inches mm US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] 3 Primary windings to be connected in series and secondary windings to be connected in parallel on the PC board. Document 409 Revised 10/28/08 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.