ANSALDO Ansaldo Trasporti s.p.a. Unita' Semiconduttori FAST RECOVERY DIODE 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 - ARF744 Repetitive voltage up to Mean forward current Surge current 2500 V 3725 A 48 kA FINAL SPECIFICATION apr 97 - ISSUE : 02 Symbol Characteristic Tj [°C] Conditions Value Unit BLOCKING V RRM Repetitive peak reverse voltage 150 2500 V V RSM Non-repetitive peak reverse voltage 150 2600 V I Repetitive peak reverse current 150 150 mA RRM V=VRRM CONDUCTING I F (AV) Mean forward current 180° sin ,50 Hz, Th=55°C, double side cooled 3725 A I F (AV) Mean forward current 180° square,50 Hz,Th=55°C,double side cooled 3800 A I FSM Surge forward current Sine wave, 10 ms reapplied reverse voltage up to 50% VRSM 48 kA I² t I² t V FM Forward voltage V F(TO) r F 150 11520 x1E3 A²s 25 1.35 V Threshold voltage 150 0.85 V Forward slope resistance 150 0.160 mohm Forward current =2000 A SWITCHING t rr Reverse recovery time Q rr Reverse recovery charge I F = 1000 A di/dt= 60 A/µs VR = 50 V 150 5 µs 500 µC A I rr Peak reverse recovery current 200 s Softness (s-factor), min 0.5 V FR Peak forward recovery di/dt= 400 A/µs 150 10 V 11 °C/kW MOUNTING R th(j-h) Thermal impedance T Operating junction temperature -30 / 150 °C Mounting force 46.0 / 54.0 kN Mass 1700 F j Junction to heatsink, double side cooled ORDERING INFORMATION : ARF744 S 25 standard specification VRRM/100 g ANSALDO ARF744 FAST RECOVERY DIODE FINAL SPECIFICATION apr 97 - ISSUE : 02 DISSIPATION CHARACTERISTICS SQUARE WAVE 9000 8000 120° Power Dissipation [W] 7000 DC 180° 90° 60° 6000 5000 30° 4000 3000 2000 1000 0 0 1000 2000 3000 4000 5000 Mean Forward Current [A] SINE WAVE 9000 180° 8000 120° Power Dissipation [W] 7000 90° 6000 60° 5000 30° 4000 3000 2000 1000 0 0 1000 2000 3000 Mean Forward Current [A] 4000 5000 ANSALDO ARF774 FAST RECOVERY DIODE FINAL SPECIFICATION apr 97 - ISSUE : 01 SWITCHING CHARACTERISTICS FORWARD RECOVERY VOLTAGE 60 50 Tj = 125 °C VFR [V] 40 30 IF Tj = 25 °C VFR 20 VF 10 0 0 200 400 600 800 1000 1200 di/dt [A/µs] REVERSE RECOVERY CHARGE Tj = 125 °C REVERSE RECOVERY CURRENT Tj = 125 °C 1200 3000 1000 A 500 A 250 A 1000 2500 900 500 A 800 2000 700 Irr [A] Qrr [µC] 1000 A 1100 250 A 1500 600 500 1000 400 300 500 200 100 0 0 0 100 200 300 400 0 100 di/dt [A/µs] ta = Irr / (di/dt) tb = trr - ta 200 300 400 di/dt [A/µs] 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 ANSALDO ARF744 FAST RECOVERY DIODE FINAL SPECIFICATION apr 97 - ISSUE : 02 FORWARD CHARACTERISTIC Tj = 150 °C SURGE CHARACTERISTIC Tj = 150 °C 50 12000 45 40 10000 ITSM [kA] Forward Current [A] 35 8000 6000 4000 30 25 20 15 10 2000 5 0 0 0.6 1.1 1.6 2.1 2.6 1 Forward Voltage [V] 10 n° cycles TRANSIENT THERMAL IMPEDANCE DOUBLE SIDE COOLED 12.0 10.0 Zth j-h [°C/kW] 8.0 6.0 4.0 2.0 0.0 0.001 0.01 0.1 1 10 100 t[s] 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 µm. 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 100