Document 601 Flyback Transformers For STMicroelectronics POTS interface • Developed for the ST Micro STL3075 and STL3085 Integrated POTS interfaces for home access gateway and WLL. • Provides negative voltage (–46 V typical) to operate the microchip Core material Ferrite Interwinding isolation 1500 Vdc Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 1.9 – 2.1 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. Packaging: –55°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 350 per 13″ reel Plastic tape: 32 mm wide, 0.42 mm thick, 20 mm pocket spacing, 9.16 mm pocket depth PCB washing Only pure water or alcohol recommended Part number1 FA2469-AL_ FA2470-AL_ Inductance Inductance at 0 A2 at Ipk3 ±8% (µH) min (µH) 19 14.86 19 14.86 Leakage inductance4 max (µH) 0.414 0.400 DCR max (Ohms) pri sec 0.036 16.5 0.036 7.92 1. When ordering, please specify packaging code: FA2470-ALD Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (350 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. Dot above pin1 Ipk3 (A) 1.5 1.5 Input voltage (V) 4.5 – 8.5 8.5 – 12.0 2. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc. 3. Ipk is peak primary current drawn at minimum input voltage. 4. Leakage inductance measured between pins 1 and 3 with pins 4 and 6 shorted. 5. Operating temperature range –40°C to +85°C. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 4 1 Pri 0.355 max 9,02 Turns ratio pri : sec 1 : 16 1:8 Sec 6 3 0.004 /0,10 0.041 1,05 0.520 max 13,21 Recommended Land Pattern 0.339 8,60 0.028 0,70 6 0.080 2,03 0.370 9,40 0.050 1,27 1 0.430 max 10,92 3 0.098 2,50 4 0.098 2,50 1 Dimensions are in inches mm Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 Document 601 Revised 03/07/07