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, VRRM＝500V ● Easy Construction with Anode （F） Type and Cathode （R） type. ● High reliability by glass passivation 32 2 45±0.4 62 4-φ7 （Applications） Various Rectifiers Welding Power Supply 45±0.4 62 24 42 max 4 19 8 φ8.5 46 MDF ■Maximum Ratings Symbol Unit：a MDR （Tj＝25℃ 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 VR（DC） Symbol IF（AV） IF（RMS） Item Conditions Unit Average Forward Current Single phase, half wave, 180︒conduction, Tc：92℃ 250 A R.M.S. Forward Current Single phase, half wave, 180︒conduction, Tc：92℃ 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 Mounting（M6） Recommended Value 2.5-3.9（25-40） Terminal（M8） Recommended Value 8.8-10 （90-105） Mass 4.7（48） N･m 11（115） （㎏f･B） 170 g ■Electrical Characteristics Symbol Item IRRM Repetitive Peak Reverse Current, max. VFM Forward Voltage Drop, max. Rth（j-c） Thermal Impedance, max. SanRex Ratings Unit at VDRM, single phase, half wave, Tj＝150℃ 15 mA Foward current 800A, Tj＝25℃, 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: [email protected] MDF(R)250A ５００ Average Forward Current vs. Power Dissipation Power Dissipation Pav（W） Forward Current（A） ５ Maximum Forward Characteristics ２ D.C. ４００ １０３ ３００ ５ Single Phase Three Phase ２００ ２ １００ １０３ ５ ０ １． ０ ０ ２． ０ １００ Allowable Case Temperature Tc（℃） Average Forward Current vs. Allowable Case Temperature １６０ １２０ １００ ８０ １００ ０ Three Phase Single Phase ２００ ３００ D.C. Transient Thermal Impedance θj-c（℃/W） ３００ ４００ Cycle Surge Forward Current Rating （Non-Repetitive） ４５００ Tj＝25℃ start ４０００ ３５００ 60Hz ３０００ ２５００ ２０００ ０ １ Average Forward Current（A） ０． ４ ５０００ Surge Forward Current（A） １４０ ６０ ２００ Average Forward Current（A） Forward Voltage Drop（V） ２ ５ １０ ２０ ５０ １００ Time（Cycles） Transient Thermal Impedance ０． ３ Junction to case ０． ２ ０． １ １０-３ ２ ５ １０-２ ２ SanRex ５ １０-１ ２ Time t（sec） ５ １００ ２ ５ １０１ ® 50 Seaview Blvd. Port Washington, NY 11050-4618 PH.(516)625-1313 FAX(516)625-8845 E-mail: [email protected]