DIODE(NON-ISOLATED TYPE) MDF(R)250A MDF R 250A is a diode with flat mounting base which is designed for use in various rectifier applications. IF AV 250A, VRRM500V Easy Construction with Anode F Type and Cathode R type. High reliability by glass passivation 32 2 450.4 62 4-7 Applications Various Rectifiers Welding Power Supply 450.4 62 24 42 max 4 19 8 8.5 46 MDF Maximum Ratings Symbol Unita MDR Tj25 unless otherwise specified Item Ratings MDF(R)200A30 MDF(R)200A40 MDF(R)200A50 Unit VRRM Repetitive Peak Reverse Voltage 300 400 500 V VRSM Non-Repetitive Peak Reverse Voltage 360 480 600 V D.C. Reverse Voltage 240 320 400 V VRDC Symbol IFAV IFRMS Item Conditions Unit Average Forward Current Single phase, half wave, 180conduction, Tc92 250 A R.M.S. Forward Current Single phase, half wave, 180conduction, Tc92 390 A Surge Forward Current 1 2cycle, I2t I2t Value for one cycle of surge current Tj Tstg IFSM Ratings 50Hz/60Hz, peak value, non-repetitive A 4000/4500 84000 A2S Junction Temperature -30 to 150 Storage Temperature -30 to 125 Mounting Torque MountingM6 Recommended Value 2.5-3.925-40 TerminalM8 Recommended Value 8.8-10 90-105 Mass 4.748 Nm 11115 fB 170 g Electrical Characteristics Symbol Item IRRM Repetitive Peak Reverse Current, max. VFM Forward Voltage Drop, max. Rthj-c Thermal Impedance, max. Ratings Unit at VDRM, single phase, half wave, Tj150 15 mA Foward current 800A, Tj25, Inst. measurement 1.15 V Junction to case 0.2 /W Conditions 50 Seaview Blvd. Port Washington, NY 11050-4618 PH.(516)625-1313 FAX(516)625-8845 E-mail: semi@sanrex.com http://store.iiic.cc/ MDF(R)250A Average Forward Current vs. Power Dissipation Power Dissipation PavW Forward CurrentA Maximum Forward Characteristics D.C. Single Phase Three Phase Allowable Case Temperature Tc Average Forward Current vs. Allowable Case Temperature Three Phase Single Phase D.C. Surge Forward CurrentA Transient Thermal Impedance j-c/W Cycle Surge Forward Current Rating Non-Repetitive Tj25 start 60Hz Average Forward CurrentA Average Forward CurrentA Forward Voltage DropV TimeCycles Transient Thermal Impedance Junction to case - - - Time tsec 50 Seaview Blvd. Port Washington, NY 11050-4618 PH.(516)625-1313 FAX(516)625-8845 E-mail: semi@sanrex.com http://store.iiic.cc/