POWER SCHOTTKY RECTIFIERS 150A Pk, 45V FEATURES e Very Low Forward (0.6V at 75A, 125C) @ Low Recovered Charge e Rugged Package Design (DO-5) High Efficiency for Low Voltage Supplies Low Thermal Resistance (0.8 C/W) e High Surge Current (1O00A) e Low Reverse Current (<50mA at rated Va at 125C) e High Reliability Screening ABSOLUTE MAXIMUM RATINGS Working Peak Reverse Voltage Vawm.. 0... cece cette rece nent eet ete tere et enens 45V DC Blocking Voltage, Va... 6. cece cece cee renee tenn cence tee eter e teens 45V Peak Repetitive Transient Voltage, Vai... cc ccc ce ccc eee etn cnet rent eens tenes 60V Peak Repetitive Forward Current (Rated Va, Square Wave, 20KHz, 50 percent Duty Cycle), lram ..... 60 cece cence eect eee teens 150A (at Te = 115C) Average Rectified Forward Current, lmaw.... cece cee eect rece eect 75A (at Tc = 115C) Non-repetitive Peak Surge Current (8.3mS), lesm 0.6.0. ccc e cece ence eee n anes 1000A Storage Temperature Range, Tstg..... cece eee c erect ence tenn t een enene ~55C to +200C Peak Operating Junction Ternperature, Tipry .... cece cette eee ene eee en enenee +175C Thermal Resistance Junction-to-Case, Rec... scree eee ence erent een ete tees 0.8C/W MECHANICAL SPECIFICATIONS USD545HR2 DESCRIPTION The USD545 Schottky barrier power rectifier is ideally suited for output rectifiers and catch diodes in low voltage power supplies. Unitrode semiconductors are inherently high-reliability devices; however, for those users who want the ultimate assurance of reliability, we offer the USD545 Schottky with 100% HR-SH screening as described on page 321. USDS45HR2 ee ins. mam. . A | .225 = 005 8.722 0.13 D SEE NOTE 1 F | / wf UNF 2a | Napel [ | M K } G s bO-5 Notes: 1. Cathode is stud. 2. All metal surfaces tin plated. 3. Maximum unlubricated stud torque: 30 inch pounds (35 kg. cm). 4. Angular orientation of terminal is undefined. 12/80 319 uy a UNITRODEUSDS545HR2 ELECTRICAL CHARACTERISTICS (Tcase =25C) Characteristic Symbol Max. Units Conditions vem Instantaneous le mA Va =45V everse Curren 10 Te = 25C 50 To = 125C 175 Te = 150C Pulse Width = 300uS Duty Cycle = 1 percent Maximum Instantaneous Ve Vv 1. = 75A Forward Current 0.70 Te = 25C 0.60 Te = 125C 0.55 Te = 150C Pulse Width = 300uS Duty Cycle = 1 percent Capacitance C 4000 pF Va =5V Voltage Rate of Change dv/dt 1000 V/uS Va = 45V Reverse Energy \) Ea 3 A Duty Cycle < 1 percent 1) See Reverse Energy Circuit. Vacwaxy VS Typical Reverse Current Case Temperature vs Reverse Voltage 0.01 0.02 0.05 ogo 9 moe a nN Ja REVERSE CURRENT (mA) a v REVERSE VOLTAGEVr (V) e oO 45 40 35 30 25 20 15 lo 5 oO Va REVERSE VOLTAGE (% OF Vawm) CASE TEMPERATURE (C) Peak Repetitive Typical Forward Current Forward Current vs. Forward Voltage 200 150 100 ss cS 50 ue = hu oe <x a> ad 0 Vaz 45V. ke <a 50% DUTY CYCLE <= 20 re SQUARE WAVE aw [= f= 20KHz = #& 3 =e Oo 10 | ~ s 100 1 175 TcCASE TEMPERATURE z 02 03 04 #65 06 O07 O8 O9 10 11 V, VOLTAGE (V) UNITRODE CORPORATION 5 FORBES ROAD LEXINGTON, MA 02173 TEL. (617) 861-6540 TWX (710) 326-6509 TELEX 95-1064 320 PRINTED IN U.S.A.USD545HR2 HR-SH This specification outlines the screening operations to which devices shall be subjected. 1. ER with peak current of 3A (See Reverse Energy Circuit). Fine Leak 2. Hermetic Seal: Gross Leak \ per MIL-STD750 Method 1071 3. Thermal Cycling: Ten (10) cycles. Each cycle consists of fifteen (15) minutes at 200C ambient, transfer immediately to -65C ambient for fifteen (15) minutes and immediately return to 200C again. 4. Reverse Bias Operation: 36V shall be applied for one-hundred and sixty -eight (168) hours at 150C. Temperature is then reduced to 25C over a period of not less than one (1) hour with fuil voltage maintained. 5. Electrical Measurements: Ail parameters shall be measured to insure conformance with specifications. Any parts exceeding specified limits or exhibiting unusual characteristics shall be removed from the lot. Reverse Energy Circuit +10V 1N5809 6 NL HY | | 1N4980 Q Current Probe tp, adjust for desired peak current in D.U.T. when Q turns off. Q,, must have fall time tof 100nS max. Copper External Anode Connection Glass Seal i- Copper Internal Anode Connection Copper C Bend Lo? < << ia Ww ts =a Molybdenum Die Sandwich Molybdenum UNITRODE CORPORATION 5 FORBES ROAD LEXINGTON, MA 02173 TEL. (617) 861-6540 TWX (710) 326-6509 TELEX 95-1064 321 PRINTED IN U.S.A.