DIODE MODULE F.R.D. MDF(R)250A-L/M MDF(R)250A-L/M are high speed diode with flat mounting base which is designed for switching application of high power. IF AV 250A VRRM=400V Easy Construction with Anode F Type and Cathode R Type Reverse Recovery Time trr L Type: 450ns, M Type: 550ns High Reliability by Glass passivated Chips Applications Switching Power Supply. Inverter Welding Power Supply MDF MDR Unit Maximum Ratings Symbol Item Ratings MDF(R)250A20L/M MDF(R)250A30L/M MDF(R)250A40L/M Unit VRRM Repetitive Peak Reverse Voltage 200 300 400 V VRSM Non-Repetitive Peak Reverse Voltage 240 360 480 V D.C. Reverse Voltage 160 240 320 V VR DC Symbol IF IF AV RSM IFSM Item Ratings Average Forward Current Single phase, half wave, 180 conduction, Tc:L/M 83 /85 R.M.S. Forward Current Single phase, half wave, 180 conduction, Tc:L/M 83 /85 Surge Forward Current 1 I2t I2t Tj Operating Junction Temperature Tstg Conditions 390 4000/4500 84000 Storage Temperature Mounting Torque A 250 2 cycle, 50/60HZ, peak value, non-repetitive Value for one cycle of surge cureent 30 150 30 125 Mounting M6 Recommended Value 2.5 3.9 25 40 4.7 48 Terminal M8 Recommended Value 8.8 10 Typical Value 11 115 Mass 90 105 Unit 170 A A A2S N m f B g Electrical Characteristics Symbol Item IRRM Repetitive Peak Reverse Current max at VDRM, single phase, half wave, Tj 150 VFM Forward Voltage Drop max Foward current 800A, Tj 25 Inst, measurement Thermal Impedance max Junction to case Rth j-c trr 13 Reverse Recovery Time max Conditions Tj 25 IF 2A di/dt 20A/ s Ratings Unit 60 mA L 1.4 M 1.3 L 450 M 550 0.2 V /W ns MDF(R)250A-L/M 14