DFS454 – Fast Recovery Diode

Part Number : DFS454

Function : Fast Recovery Diode

Manufactures : Dynex

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Description :

DFS454 DFS454 Fast Recovery Diode Advance Information Replaces March 1998 version, DS4145-3.4 DS4145-4.0 January 2000 APPLICATIONS s Induction Heating s A.C. Motor Drives s Inverters And Choppers s Welding s High Frequency Rectification s UPS KEY PARAMETERS VRRM 2500V IF(AV) 365A IFSM 3500A Qr 200µC trr 2.0µs FEATURES s Double Side Cooling s High Surge Capability s Low Recovery Charge VOLTAGE RATINGS Type Number Repetitive Peak Reverse Voltage VRRM V 2500 2400 2200 2000 Conditions DFS454 25 DFS454 24 DFS454 22 DFS454 20 VRSM = VRRM + 100V Outline type code: M771. See Package Detials for further information. CURRENT RATINGS Symbol Double Side Cooled IF(AV) IF(RMS) IF Mean forward current RMS value Continuous (direct) forward current Half wave resistive load, Tcase = 65oC Tcase = 65oC Tcase = 65oC 365 575 525 A A A Parameter Conditions Max. Units Single Side Cooled (Anode side) IF(AV) IF(RMS) IF Mean forward current RMS value Continuous (direct) forward current Half wave resistive load, Tcase = 65oC Tcase = 65oC Tcase = 65oC 242 380 335 A A A 1/8 DFS454 SURGE RATINGS Symbol IFSM I2t IFSM I2t IFSM I2t Parameter Surge (non-repetitive) forward current 10ms half sine; with 0% VRRM, Tj = 150oC I2t for fusing Surge (non-repetitive) forward current 10ms half sine; with 50% VRRM, Tj = 150oC I2t for fusing Surge (non-repetitive) forward current 10ms half sine; with 100% VRRM, Tj = 150oC I2t for fusing A2s 39.2 x 103 A2s kA 61 x 103 2.8 A2s kA Conditions Max. 3.5 Units kA THERMAL AND MECHANICAL DATA Symbol Parameter Conditions Double side cooled Rth(j-c) Thermal resistance – junction to case Single side cooled Cathode dc Clamping force 3.5kN with mounting compound On-state (conducting) Double side Single side -55 3.0 0.147 0.02 0.04 150 175 4.0 o Min. dc Anode dc – Max. 0.07 0.133 Units o C/W o C/W C/W C/W C/W o o Rth(c-h) Thermal resistance – case to heatsink o Tvj Tstg – Virtual junction temperature Storage temperature range Clamping force C C o kN CHARACTERISTICS Symbol VFM IRRM trr QRA1 IRM K VTO rT VFRM 2/8 Forward voltage Peak reverse current Reverse recovery time Recovered charge (50% chord) Reverse recovery current Soft factor Threshold voltage Slope resistance Forward recovery voltage At Tvj = 150oC At Tvj = 150oC di/dt = 1000A/µs, Tj = 125oC IF = 750A, diRR/dt = 100A/µs Tcase = 125oC, VR = 100V Parameter Conditions At 1000A peak, Tcase = 25oC At VRRM, Tcase = 150oC Typ. 2.0 150 1.3 Max. 3.1 50 200 1.64 1.54 120 Units V mA µs µC A V mΩ V DFS454 DEFINITION OF K FACTOR AND QRA1 QRA1 = 0.5x IRR(t1 + t2) dIR/dt 0.5x IRR IRR t1 t2 k = t1/t2 τ CURVES 2000 Measured under pulse conditions 1750 Instantaneous forward current IF – (A) 1500 1250 Tj = 150˚C 1000 Tj = 25˚C 750 500 1.0 2.0 3.0 4.0 5.0 Instantaneous forward voltage VF – (V) Fig. 1 Maximum (limit) forward characteristics 3/8 DFS454 500 Measured under pulse conditions 400 Instantaneous forward current IF – (A) Tj = 150˚C 300 Tj = 25˚C 200 […]

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DFS454 Datasheet


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