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| ANSALDO Ansaldo Trasporti s.p.a. Unita' Semiconduttori Via N. Lorenzi 8 - I 16152 GENOVA - ITALY Tel. int. +39/(0)10 6556549 - (0)10 6556488 Fax Int. +39/(0)10 6442510 Tx 270318 ANSUSE I - FAST RECOVERY DIODE ARF744 Repetitive voltage up to Mean forward current Surge current 2500 V 3725 A 48 kA FINAL SPECIFICATION apr 97 - ISSUE : 02 Symbol Characteristic Conditions Tj [C] Value Unit BLOCKING V RRM V RSM I RRM Repetitive peak reverse voltage Non-repetitive peak reverse voltage Repetitive peak reverse current V=VRRM 150 150 150 2500 2600 150 V V mA CONDUCTING I I I F (AV) Mean forward current Mean forward current Surge forward current I t Forward voltage Threshold voltage Forward slope resistance 180 sin ,50 Hz, Th=55C, double side cooled 180 square,50 Hz,Th=55C,double side cooled Sine wave, 10 ms reapplied reverse voltage up to 50% VRSM 150 3725 3800 48 11520 x1E3 A A kA As V V mohm F (AV) FSM I t V FM V F(TO) r F Forward current = 2000 A 25 150 150 1.35 0.85 0.160 SWITCHING t rr Q rr I rr s V FR Reverse recovery time Reverse recovery charge Peak reverse recovery current Softness (s-factor), min Peak forward recovery di/dt= 400 A/s 150 I F = 1000 A di/dt= VR = 60 A/s 50 V 200 0.5 10 V A 150 5 500 s C MOUNTING R th(j-h) T F j Thermal impedance Operating junction temperature Mounting force Mass Junction to heatsink, double side cooled 11 -30 / 150 46.0 / 54.0 1700 C/kW C kN g ORDERING INFORMATION : ARF744 S 25 standard specification VRRM/100 ARF744 FAST RECOVERY DIODE FINAL SPECIFICATION apr 97 - ISSUE : 02 ANSALDO DISSIPATION CHARACTERISTICS SQUARE WAVE 9000 8000 120 180 DC 7000 Power Dissipation [W] 60 90 6000 5000 4000 3000 2000 1000 0 0 1000 2000 3000 4000 5000 Mean Forward Current [A] 30 SINE WAVE 9000 180 8000 120 7000 Power Dissipation [W] 6000 60 90 5000 4000 3000 2000 1000 0 0 1000 30 2000 3000 4000 5000 Mean Forward Current [A] ARF774 FAST RECOVERY DIODE FINAL SPECIFICATION apr 97 - ISSUE : 01 ANSALDO SWITCHING CHARACTERISTICS FORWARD RECOVERY VOLTAGE 60 50 Tj = 125 C 40 VFR [V] 30 Tj = 25 C IF VFR 20 10 VF 0 0 200 400 600 di/dt [A/s] 800 1000 1200 REVERSE RECOVERY CHARGE Tj = 125 C 3000 1000 A REVERSE RECOVERY CURRENT Tj = 125 C 1200 1100 1000 500 A 1000 A 500 A 250 A 2500 900 800 700 Irr [A] 400 2000 Qrr [C] 1500 250 A 600 500 1000 400 300 500 200 100 0 0 100 200 di/dt [A/s] 300 0 0 100 200 di/dt [A/s] 300 400 ta = Irr / (di/dt) tb = trr - ta IF d i/d t ta tb Softness (s factor) s = tb / ta Energy dissipation during recovery Er = Vr * (Qrr - Irr *ta / 2 ) Irr Vr ARF744 FAST RECOVERY DIODE FINAL SPECIFICATION apr 97 - ISSUE : 02 ANSALDO FORWARD CHARACTERISTIC Tj = 150 C 50 12000 45 10000 40 35 Forward Current [A] 8000 ITSM [kA] 30 25 20 15 10 5 0 0.6 1.1 1.6 2.1 2.6 Forward Voltage [V] 0 1 SURGE CHARACTERISTIC Tj = 150 C 6000 4000 2000 10 n cycles 100 TRANSIENT THERMAL IMPEDANCE DOUBLE SIDE COOLED 12.0 10.0 8.0 Zth j-h [C/kW] 6.0 4.0 2.0 0.0 0.001 0.01 0.1 t[s] 1 10 100 Distributed by All the characteristics given in this data sheet are guaranteed only with clamping force, cleaned and lubricated heatsink, surfaces with flatness < and roughness < 2 m. In the interest of product improvement ANSALDO reserves the right to any data given in this data sheet at any time without previous notice. If not stated otherwise the maximum value of ratings (simbols over background) and characteristics is reported. uniform .03 mm change shaded |
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