RAXSMD0480XX GENERAL PURPOSE RECTIFIER DIODE ELEMENT Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272 www.pwrx.com 8,000 Amperes 400 Volts Powerex General Purpose Rectifier Diode Elements are for low forward voltage drop to minimize conduction losses. They are made with molybdenum anode and cathode contacts to minimize thermal stresses during operation. They can be mounted directly to an air or water cooled heat exchangers to achieve high current handling capability. FEATURES: FEATURES Low On-State Voltage Excellent Surge and I2t Ratings APPLICATIONS: DC Power Supplies Welding Supplies Plating Supplies ORDERING INFORMATION Select the complete 12 digit Part Number using the table below. Example: RAXSMD0480XX is a 400V 8,000A General Purpose diode element with a typical reverse recovery time of 25µs. Voltage Voltage Current Current Reverse Lead PART Rating Code Rating Code Recovery Code Itavg tRR VDRM-VRRM RAXSMD 400V 04 8000A 80 XX OO 25µs typical Revised: Page 1 of 6 9/23/2009 RAXSMD0480XX GENERAL PURPOSE RECTIFIER DIODE ELEMENT Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272 8,000 Amperes 400 Volts www.pwrx.com Absolute Maximum Ratings Characteristic Symbol Repetitive Peak Reverse Voltage Average On-State Current, TS=84°C RMS On-State Current, TS=84°C Peak One Cycle Surge Current, 60Hz, VR=VRRM Fuse Coordination I2t, 60Hz Peak One Cycle Surge Current, 50Hz, VR=0V Fuse Coordination I2t, 50Hz Operating Temperature Storage Temperature Rating Units VRRM 400 Volts IF(Avg.) 8000 A IF(RMS) IFSM I2t IFSM I2t Tj TStg. 12566 55,000 1.26E+07 50,875 1.29E+07 -40 to+175 -50 to+200* A A A2s A A2s °C °C * Limit to 50°C prior to assembly. Approximate Weight 0.3 0.14 9,000 - 11,000 40 - 48.9 Mounting Force Mounting Recommendations Contact surfaces of this diode element are subject to oxidation at high temperatures. It is recommended that these elements be sealed in the assembly using an o-ring or similar sealing mechanism. Contacts can be further protected by coating with a thin layer of high temperature silicon based oil. Information presented is based upon manufacturers testing and projected capabilities. This information is subject to change p j g without notice. The manufacturer makes no claim as to suitability for use, reliability, capability or future availability of this product. Page 2 of 6 lb Kg lbs Knewtons RAXSMD0480XX GENERAL PURPOSE RECTIFIER DIODE ELEMENT Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272 Electrical Characteristics, Tj=25°C unless otherwise specified Characteristic Symbol Repetitive Peak Reverse Leakage Current Peak On-State Voltage VFM Model, Low Level VFM = VO + r•IFM Reverse Recovery Time IRRM VFM V0 r tRR 8,000 Amperes 400 Volts www.pwrx.com Test Conditions min Tj=175°C, VRRM=Rated Tj=25°C, IFM=4000A Rating typ 15 Tj=175°C 15% IFM - π•IFM Tj=25°C, IFM=400A diR/dt = 25 A/µs max Units 60 1.05 0.642 ma V V 2.28E-05 Ω 25 µs Thermal Characteristics Characteristic Thermal Resistance Junction to Case Case to Sink Thermal Impedance Model ZΘjc(t) = Symbol Test Conditions min Rating typ max Units RΘjc Double side cooled 0.005 °C/Watt RΘcs Double side cooled 0.003 °C/Watt ZΘjc Double side cooled Σ(A(N)•(1-exp(-t/Tau(N)))) where: N= A(N) = Tau(N) = Page 3 of 6 1 2 3 4 8.117E-04 4.774E-04 3.402E-03 3.423E-04 1.112E-03 4.481E-03 4.894E-02 2.710E-01 RAXSMD0480XX GENERAL PURPOSE RECTIFIER DIODE ELEMENT Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272 8,000 Amperes 400 Volts www.pwrx.com MAXIMUM TRANSIENT THERMAL IMPEDANCE 6.0E-03 Thermal Impedance (°C/Watt) 5.0E-03 4.0E-03 3.0E-03 2.0E-03 1.0E-03 0.0E+00 0.001 0.01 0.1 1 10 Time (sec) Maximum On-State Voltage Drop 2.000 1.750 Tj = 175°C VFM (V) 1.500 1.250 1.000 0.750 0.500 1000 10000 IFM (A) Page 4 of 6 100000 RAXSMD0480XX GENERAL PURPOSE RECTIFIER DIODE ELEMENT Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272 8,000 Amperes 400 Volts www.pwrx.com Average Current Ratings 200 180° Sine Wave 18000 180 Pavg Pavg (Watts) 16000 160 14000 140 12000 120 10000 100 8000 80 Ts 6000 60 4000 40 2000 20 0 Maximum Allowable Sink Temperature (°C) 20000 0 0 2000 4000 6000 8000 10000 12000 Iavg (A) Average Current Ratings 200 180° Square Wave 18000 180 Pavg Pavg (Watts) 16000 160 14000 140 12000 120 10000 100 8000 80 Ts 6000 60 4000 40 2000 20 0 0 0 2000 4000 6000 Iavg (A) Page 5 of 6 8000 10000 12000 Maximum Allowable Sink Temperature (° (°C) 20000 RAXSMD0480XX GENERAL PURPOSE RECTIFIER DIODE ELEMENT Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272 8,000 Amperes 400 Volts www.pwrx.com Average Current Ratings 200 120° Square Wave 18000 180 Pavg Pavg (Watts) 16000 160 14000 140 12000 120 10000 100 8000 80 Ts 6000 60 4000 40 2000 20 0 0 0 2000 4000 6000 Iavg (A) Page 6 of 6 8000 10000 12000 Maximum Allowable Sink Temperature (°C) 20000