POWER SCHOTTKY RECTIFIERS 150 Amp Pk, Up to 45V FEATURES Very Low Forward Voltage (0.6V at 60A, 125C) e Low Recovered Charge @ Rugged Package Design (DO-5) High Efficiency for Low Voltage Supplies @ Low Thermal Resistance (0.8C/W) @ High Surge Current (LOQ0A) Low Reverse Current (<50mA at rated va at 125C) @ Available with Flexible Top Lead ABSOLUTE MAXIMUM RATINGS USD520 Working Peak Reverse Voltage, Vawm .........-0- 20V ........ DC Blocking Voltage, Va ........ 0c cece cece rene 20V ........ Peak Repetitive Surge Current, Vg...........000 25V oo... Peak Repetitive Forward Current (Rated Vr, Square Wave, 20 KHz, 50 percent Duty Cycle), Ipam .. 0... cee c ese e cee e eect eeseees Average Rectified Forward Current, lriav USD535 USD545 35V....... 46V.. . 35V 45V. AV... 50V. 150A (at Te = 115C) . 75A (at Te = 115C) USD520 USD535 USD545 DESCRIPTION This series of Schottky barrier power rectifiers is ideally suited for output rectifiers and catch diodes in low voltage power supplies. The Unitrode high conductivity design, using a heavy copper top post and 4 point crimp, ensures cool thermal operation and low dynamic impedance. Rugged design absorbs stress that can damage glass-to- metal seal during installation and use. Non-repetitive Peak Surge Current (8.3mS), lesa io... cece ccc c ccc e sen v eens eeees 1000A Operating and Storage Temperature Range, Tj), Tsy.....-.e. 000s -55C to +200C Peak Operating Junction Temperature, Tip ..... cece cece cece teen cee eeennes +175C Thermal Resistance Junction-to-Case, Roic.... ec ccc ee cee cee cceeseucevaeennes 0.8C/W MECHANICAL SPECIFICATIONS USD520 DOo-5 USDS535 USD545 r INL Ln Va - 26 UNF - 24 4 K Notes: 1, Cathode is stud. 2. All metal surfaces tin plated. 3. Maximum untubricated stud torque: 30 inch pounds (35 kg. cm). 4. Angular orientation of terminal is undefined. 2/80 316 uy ae UNITRODEELECTRICAL CHARACTERISTICS (T,,<, = 25C) USDS520 USD535 USD545 Characteristic Symbol All Units Conditions Maximum Instantaneous iz 50 mA Vp c= rated, Reverse Current Te = 125C Pulse Width = 300uS Duty Cycle = 1 percent Maximum Instantaneous Ve 0.60 Vv Forward Voltage ig = 60A . Te = 125 Flexible Top Lead Option Ve 0.63 V c = 125C Maximum Capacitance Cy 4000 pF V_ = 5.0V Maximum Voltage = d Rate of Change dv/dt 700 VinS Vp = rate Typical Forward Current Typical Reverse Current vs Forward Voltage vs Reverse Voltage 200 0.01 150 0.02 100 0.05 50 =z ol z E & 02 Zz 29 a 05 w wm 0. 4 x & 5 3 10 w | 7) ~ & 2 5 zi 2 L 10 20 1 02 #03 04 O85 06 O07 08 O9 10 21 50 V, VOLTAGE (V) ipa PEAK REPETITIVE FORWARD CURRENT (A) UNITRODE CORPORATION * 5 FORBES ROAD LEXINGTON, MA 02173 TEL. (617) 861-6540 TWX (710) 326-6509 TELEX 95-1064 g Ny 3 oo o 2 a 10 Maximum Current vs Case Temperature Vv, = RA 50% DUTY SQUARE WA f == 20 KHz 100 125 150 To. -~ CASE TEMPERATURE (C) 317 10 100 90 6800670 660 650 6400630 620: 10 COO V, ~- REVERSE VOLTAGE (% OF Vay) 75 PRINTED IN U.S.A, "aVa VOLTS (V) Varmax Rating vs Case Temperature USD520 USD535 USD545 50 25 25 SO 75 100 125 150 175 CASE TEMPERATURE (C) MECHANICAL SPECIFICATIONS FLEXIBLE TOP LEAD (OPTIONAL) USD520F DO-5 with Flexible Lead Add an F Suffix to Part Number. USD535F USDS45F Standard JEDEC |, N R DO-5 Package ina mm M|_1.500 #100 38.10 2.54 N | 4.75 # 250 120.65 +635 H i (-o |r P| 4254 025 10.80 0.64 cake ee 36 oF 4+ [QT 678 320 17.22 8.13 |. Lal's [R[ 208+ cos pia [5.21 20.13 01a T Shrinkable S| 075+ 010 1.91 0.25 Sleeving Covers TT MIN. 2.54 MIN. Note: Consuit Factory for Non-standard Lead Lengths. UNITRODE CORPORATION 5 FORBES ROAD LEXINGTON, MA 02173 TEL. (617) 861-6540 TWX (710) 326-6509 TELEX 95-1064 318 PRINTED IN U.S.A.