Q3903-AL COILCRAFT | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 1
Technical content
© Coilcraft, Inc. 2009 Specifications subject to change without notice. Please check our website for latest information. Toroidal Transformer – Q3903-AL Document 616 Document 616 Revised 05/27/09
- Specified by ON Semiconductor for use with their NCP1605 PFC Controller. Referenced as X25, pulse transformer on evaluation board NCP1605FORWGEVB and Application Note AND8292. Recommended by Texas Instruments for use with their UC3875 Phase Shift Resonant Controller. Three 1 : 1 windings 500 Vrms winding-to-winding isolation. 0.95 24,13 0.72 18,29 0.65 16,51 Notch indicates pin1 0.475 12,07 0.19 ± 0.02 4,83 ± 0,51 0.140 3,56 0.638 16,21 0.051 1,3 0.01256 × 0.30 0,319 × 0,75 Recommended PC Board Layout 1:1:1 Inter-winding Part Inductance1 DCR max2 isolation number min (µH) (Ohms) (Vrms) Q3903-AL 210 0.090 500 1. Inductance measured between pins 1 and 6, at 15.75 kHz, 0.015 Vrms, 0 Adc using an Agilent/HP 4192A impedance analyzer. 2. DCR is per winding, measured on Cambridge Technology micro- ohmmeter or equivalent. 3. Electrical specifications at 25°C. Core material Ferrite Terminations RoHS compliant tin-silver over tin over nickel over brass. Other terminations available at additional cost. Weight 4.3 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. Packaging: –40°C to +80°C 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 49 per tray PCB washing Only pure water or alcohol recommended Dimensions are in inches mm