Document 538-1 “PoE Plus” Magnetics The ETH1-230L_1 is developed for high power PoE applications in support of the goals of the IEEE 802.3at-2009 standard. This module is designed for 2-pair cabling plants at 30 Watts and two modules may be used for 4-pair cabling in 60 Watt applications. It exceeds the return loss requirements of Gbit Ethernet. It has a minimum open-circuit inductance of 350 µH at an offset current of 35 mA at 25°C ambient temperature, and can handle 22.5 mA minimum dc offset at 85°C. Typical temperature rise from 25°C ambient is 7°C with 800 mA and 10°C with 1000 mA dc current applied to one center tap of each isolation transformer. Winding to winding isolation is 1500 Vrms. Ambient temperature range: –40°C to +85°C with 1 A current. Request free evaluation samples by contacting Coilcraft or visiting www.coilcraft.com. 1. When ordering, please specify packaging code: ETH1-230LD Packaging:D =13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (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. TX+ 6 9 TX+ TX– TXCT RXCT RX+ 5 1:1 11 4 3 2 12 TX– TXCT RXCT 1:1 13 14 Cable or chipset side Core material Ferrite Terminations RoHS compliant tin-silver-copper over tin over nickel over phos bronze Weight 3.0 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°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) 60 per billion hours / 16,666,667 hours, calculated per Telcordia SR-332 Packaging 400/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick, PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. Chipset or cable side 10 RX+ RX– RX– 1 Dimensions are in inches mm Document 538-1 Revised 11/02/11 Document 538-2 “PoE Plus” Magnetics L vs Offset Current Return Loss 1200 0 10 20 Return Loss (dB) Inductance (µH) 1000 800 600 85°C 400 70°C 25°C 30 40 50 60 70 80 200 90 0 0 5 10 15 20 25 30 35 100 40 1 Current (mA) 10 100 1000 100 1000 Frequency (MHz) 802.3af specification: 18 dB min from 1 MHz to 40 MHz 16 dB min at 50 MHz 12 dB min at 80 MHz 10 dB min at 100 MHz Crosstalk 0 0 10 10 20 20 30 30 Crosstalk (dB) Insertion Loss (dB) Insertion Loss 40 50 60 40 50 60 70 70 80 80 90 90 100 100 1 10 100 Frequency (MHz) 802.3af specification: 1.0 min dB from 0.1 MHz to 100 MHz 1.2 min dB at 125 MHz 1000 1 10 Frequency (MHz) 802.3af specification: 45 dB min at 30 MHz 40 dB min at 60 MHz 33 dB min at 100 MHz Document 538-2 Revised 11/02/11 Document 538-2 “PoE Plus” Magnetics Differential to Common Mode Rejection 0 Common Mode Rejection (dB) 10 20 30 40 50 60 70 80 90 100 1 10 100 Frequency (MHz) 802.3af specification: 50 dB min from 1 MHz to 10 MHz 30 dB min from 10 MHz to 125 MHz 20 dB min from 125 MHz to 500 MHz 1000 Differential to Common Mode Rejection (dB) Common Mode Rejection 0 10 20 30 40 50 60 70 80 90 100 1 10 100 Frequency (MHz) 1000 802.3af specification: 45 dB min at 30 MHz 40 dB min at 60 MHz 35 dB min at 100 MHz Document 538-3 Revised 11/02/11