77204C Murata

772 Series www.murata-ps.com Pulse Transformers SELECTION GUIDE Order Code Parameter Units Turns ratio 1:1 1:1:1 2:1:1 2:1:1 1:1 1:1:1 1:1:1 2:1:1 1:1 1:1:1 2:1:1 Primary Inductance 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 16.3 16.3 16.3 mH (Min.) FEAATTURESURES Primary Et Constant 120 120 120 120 240 240 240 240 482 482 482 Vs RoHS compliant (Min.) Inductance to 16.3mH Leakage Inductance 2.0 3.0 3.5 3.5 5.0 11 11 11 18 40 40 H (Max.) Up to 482 Vs Et rating Interwinding 50 40 30 30 55 35 18 35 65 40 40 pF Capacitance (Max.) PCB mounting DC Resistance (Max.) UL 94 V-0 package materials 0.25 0.25 0.24 0.24 0.86 0.90 0.90 0.84 3.50 3.60 3.50 Primary winding Up to 4000Vrms isolation DC Resistance (Max.) 0.23 0.22 0.12 0.12 0.83 0.76 0.76 0.38 3.40 3.10 1.60 Secondary1 winding Backward compatible with DC Resistance (Max.) Sn/Pb soldering systems - 0.28 0.15 0.15 - 1.10 1.10 0.50 - 4.20 2.00 Secondary2 winding Isolation voltage ( ash 2.5 4.0 2.5 kVrms tested for 1 second) DESCRIPTION The 772 series of pulse transformers are intended ABSOLUTE MAXIMUM RATINGS for medium power applications in switch mode Operating free air temperature range 0C to 70C power supplies and thyristor/triac ring (e.g. motor control applications). The standard turns Storage temperature range -60C to 125C ratios may be modi ed on any transformer with Lead Temperature 1.5mm from case for 10 seconds 300C three windings by connecting any two windings in series. 1 SOLDERING INFORMATION Peak wave solder temperature 300C for 10 seconds Pin nish Matte tin with nickel pre-plate Speci cations typical at T = 25C A 1 For further information, please visit www.murata-ps.com/rohs For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KMP 772C B04 Page 1 of 3 77201C 77202C 77203C 77203HVC 77204C 77205C 77205SC 77206C 77207C 77208C 77209C20.30 (0.799) 772 Series Pulse Transformers PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT DETAILS 25.40 (1.00) 1.20+0.15-0.00 1 3 (0.472+0.006-0.000) 4 5 77202C YYWW 2.54 (0.1) 2 6 2.54 (0.1) 5.92 Unless otherwise stated all dimensions in mm (inches) 0.25 (0.01). (0.233) 12.30 (0.484) TUBE DIMENSIONS 12.5 (0.492) 0.66 (0.026) Max. 2.53 (0.100) 5.08 (0.2) 15.24 (0.6) 5.08 (0.2) 3.05 20.32 (0.8) (0.120) 11.50 (0.453) All dimensions in mm (inches) XX.X0.50(0.02), XX.XX0.25(0.01). Tube length: 530 (20.87) Max. All pins on a 2.54 (0.1) pitch. Unless otherwise stated all dimensions in mm (inches) 0.25 (0.01). PIN CONNECTION STYLE - 8 PIN DIP (TOP VIEW) Screen* 1 3 Secondary 1 4 Primary 5 Secondary 2 6 2 * Only on 77205SC www.murata-ps.com/support KMP 772C B04 Page 2 of 3 0.750.12 13.30 (0.524) (0.0300.005) 22.50 (0.886)