DF451 DF451 Fast Recovery Diode FEATURES ■ Double Side Cooling ■ High Surge Capability ■ Low Recovery Charge DS4143- JXO\20/1 31794 ) KEY PARAMETERS VRRM 1600V IF(AV) 295A IFSM 3500A Qr 25µC trr 1.22µs Applications ■ Induction Heating ■ A.C. Motor Drives ■ Inverters And Choppers ■ Welding ■ High Frequency Rectification ■ UPS Voltage Ratings Type Number Repetitive Peak Reverse Voltage VRRM V DF451 16 DF451 14 DF451 12 DF451 10 DF451 08 DF451 06 1600 1400 1200 1000 800 600 Conditions Outline type code: M771. See Package Details for further information. VRSM = VRRM + 100V CURRENT RATINGS Symbol Parameter Conditions Max. Units Double Side Cooled IF(AV) Mean forward current Half wave resistive load, Tcase = 65oC 295 A IF(RMS) RMS value Tcase = 65oC 543 A Continuous (direct) forward current Tcase = 65oC 391 A IF Single Side Cooled (Anode side) IF(AV) Mean forward current Half wave resistive load, Tcase = 65oC 220 A IF(RMS) RMS value Tcase = 65oC 348 A Continuous (direct) forward current Tcase = 65oC 285 A IF 1/8 DF451 SURGE RATINGS Symbol IFSM I2t IFSM I2t Conditions Parameter Surge (non-repetitive) forward current I2t for fusing Surge (non-repetitive) forward current I2t for fusing 10ms half sine; with 0% VRRM, Tj = 150oC 10ms half sine; with 50% VRRM, Tj = 150oC Max. Units 3.5 kA 61.25 x 103 A2s 2.8 kA 39.2 x 103 A2s THERMAL AND MECHANICAL DATA Double side cooled Rth(j-c) Thermal resistance - junction to case - Max. Units dc - 0.07 o Anode dc - 0.133 o Cathode dc - 0.147 o Double side - 0.02 o Single side - 0.02 o - 150 o o Conditions Parameter Symbol Single side cooled C/W C/W C/W C/W Thermal resistance - case to heatsink Clamping force 5.0kN with mounting compound Tvj Virtual junction temperature Forward (conducting) Tstg Storage temperature range –55 150 Clamping force 4.5 5.5 kN Typ. Max. Units Rth(c-h) - C/W C C CHARACTERISTICS Symbol Conditions VFM Forward voltage At 600A peak, Tcase = 25oC - 2.65 V IRRM Peak reverse current At VRRM, Tcase = 125oC - 100 mA 1.22 - µs trr QRA1 Reverse recovery time Recovered charge (50% chord) IF = 500A, diRR/dt = -80A/µs - 25 µC IRM Reverse recovery current Tcase = 125oC, VR = 100V - 40 A K Soft factor 1.7 - - VTO Threshold voltage At Tvj = 125oC - 1.6 V rT Slope resistance At Tvj = 125oC - 1.5 mΩ Forward recovery voltage di/dt = 1000A/µs, Tj = 125oC - 40 V VFRM 2/8 Parameter DF451 DEFINITION OF K FACTOR AND QRA1 QRA1 = 0.5x IRR(t1 + t2) dIR/dt t1 t2 k = t1/t2 τ 0.5x IRR IRR CURVES 3000 Measured under pulse conditions Instantaneous forward current, IF - (A) 2500 2000 Tj = 150°C 1500 Tj = 25°C 1000 500 2.0 3.0 4.0 5.0 6.0 Instantaneous forward voltage, VF - (V) Fig.1 Maximum (limit) forward characteristics 3/8 DF451 500 Measured under pulse conditions Instantaneous forward current, IF - (A) 400 300 Tj = 150°C 200 Tj = 25°C 100 0 1.25 1.5 1.75 2.0 Instantaneous forward voltage, VF - (V) Fig.2 Maximum (limit) forward characteristics 4/8 2.25 DF451 1000 IF QS = ∫ 50µs Conditions: 0 Tj = 125°C, VR = 100V Reverse recovered charge QS - (µC) QS tp = 1ms dIR/dt 100 IF = 2000A IF = 1000A IF = 500A IRR IF = 200A IF = 100A 10 1 1 10 100 Rate of rise of reverse current, dIR/dt - (A/µs) 1000 Fig.3 Recovered charge 1000 Conditions: Tj = 125°C, VR = 100V Reverse recovery current, IRR - (A) IF = 2000A IF = 1000A 100 IF = 500A IF = 100A 10 1 1 10 100 Rate of rise of reverse current, dIR/dt - (A/µs) 1000 Fig.4 Typical reverse recovery current vs rate of rise of forward current 5/8 DF451 0.1 Thermal impedance - (°C/W) d.c. Double side cooled 0.01 0.001 0.01 0.1 1 Time - (s) 10 100 Fig.5 Maximum (limit) transient thermal impedance - junction to case - (˚C/W) PACKAGE DETAILS For further package information, please contact your local Customer Service Centre. All dimensions in mm, unless stated otherwise. DO NOT SCALE. 2 holes Ø3.6 x 2.0 deep (One in each electrode) Cathode Ø42 max 15.0 14.0 Ø19 nom Ø19 nom Anode Nominal weight: 50g Clamping force: 5kN ±10% Package outine type code: M771 6/8 IMPORTANT INFORMATION: This publication is provided for information only and not for resale. The products and information in this publication are intended for use by appropriately trained technical personnel. Due to the diversity of product applications, the information contained herein is provided as a general guide only and does not constitute any guarantee of suitability for use in a specific application.The user must evaluate the suitability of the product and the completeness of the product data for the application. The user is responsible for product selection and ensuring all safety and any warning requirements are met. Should additional product information be needed please contact Customer Service. Although we have endeavoured to carefully compile the information in this publication it may contain inaccuracies or typographical errors. The information is provided without any warranty or guarantee of any kind. This publication is an uncontrolled document and is subject to change without notice. When referring to it please ensure that it is the most up to date version and has not been superseded. The products are not intended for use in applications where a failure or malfunction may cause loss of life, injury or damage to property. The user must ensure that appropriate safety precautions are taken to prevent or mitigate the consequences of a product failure or malfunction. The products must not be touched when operating because there is a danger of electrocution or severe burning. Always use protective safety equipment such as appropriate shields for the product and wear safety glasses. Even when disconnected any electric charge remaining in the product must be discharged and allowed to cool before safe handling using protective gloves. Extended exposure to conditions outside the product ratings may affect reliability leading to premature product failure. Use outside the product ratings is likely to cause permanent damage to the product. In extreme conditions, as with all semiconductors, this may include potentially hazardous rupture, a large current to flow or high voltage arcing, resulting in fire or explosion. Appropriate application design and safety precautions should always be followed to protect persons and property. Product Status & Product Ordering: We annotate datasheets in the top right hand corner of the front page, to indicate product status if it is not yet fully approved for production. The annotations are as follows:Target Information: Preliminary Information: No Annotation: This is the most tentative form of information and represents a very preliminary specification. No actual design work on the product has been started. The product design is complete and final characterisation for volume production is in progress.The datasheet represents the product as it is now understood but details may change. 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