PD-2.305 rev. B 02/2000 31DQ05 31DQ06 3.3 Amp SCHOTTKY RECTIFIER Major Ratings and Characteristics Description/Features Characteristics 31DQ.. Units IF(AV) Rectangular waveform 3.3 A 50/60 V IFSM @ tp = 5 µs sine 340 A VF 0.62 V - 40 to 150 °C VRRM TJ @ 3 Apk, TJ = 25°C The 31DQ.. axial leaded Schottky rectifier has been optimized for very low forward voltage drop, with moderate leakage. Typical applications are in switching power supplies, converters, free-wheeling diodes, and reverse battery protection. Low profile, axial leaded outline High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance Very low forward voltage drop High frequency operation Guard ring for enhanced ruggedness and long term reliability CASE STYLE AND DIMENSIONS Outline C - 16 Dimensions in millimeters and inches 1 31DQ05, 31DQ06 PD-2.305 rev. B 02/2000 Voltage Ratings Part number VR 31DQ05 31DQ06 50 60 Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) Absolute Maximum Ratings Parameters 31DQ.. Units I F(AV) Max. Average Forward Current 3.3 A * See Fig. 4 Conditions 50% duty cycle @ TA = 40 °C, rectangular wave form With cooling fins I FSM Max. Peak One Cycle Non-Repetitive Surge Current * See Fig. 6 340 55 A Following any rated load condition and with rated VRRM applied 10ms Sine or 6ms Rect. pulse 5µs Sine or 3µs Rect. pulse Electrical Specifications Parameters V FM IRM 31DQ.. Units Max. Forward Voltage Drop * See Fig. 1 (1) Conditions 0.62 0.78 0.54 V V V @ 3A @ 6A @ 3A 0.65 V @ 6A Max. Reverse Leakage Current 2 mA TJ = 25 °C * See Fig. 2 15 mA TJ = 125 °C (1) TJ = 25 °C TJ = 125 °C VR = rated VR CT Typical Junction Capacitance 160 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C LS Typical Series Inductance 9.0 nH Measured lead to lead 5mm from package body (1) Pulse Width < 300µs, Duty Cycle <2% Thermal-Mechanical Specifications Parameters 31DQ.. Units TJ Max. Junction Temperature Range -40 to 150 Tstg Max. Storage Temperature Range -40 to 150 Conditions °C °C RthJA Max. Thermal Resistance Junction to Ambient 80 °C/W DCoperation Without cooling fins RthJA Typical Thermal Resistance Junction to Ambient 34 °C/W With fin 20 x 20 (0.79 x 0.79) 1.0 (0.04) thick. Dimensions in millimeters (inches) wt Approximate Weight Case Style 2 1.2 (0.042) g (oz.) C - 16 31DQ05, 31DQ06 PD-2.305 rev. B 02/2000 100 10 T J = 150˚C Reverse Current - IR (mA) TJ = 150˚C 125˚C 1 0.1 0.01 25˚C 0.001 0 TJ = 125˚C 1 20 40 60 Reverse Voltage - VR (V) TJ = 25˚C Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage 1000 0.1 0 0.2 0.4 0.6 0.8 1 Forward Voltage Drop - VFM (V) Junction Capacitance - CT (pF) Instantaneous Forward Current - IF (A) 10 T = 25˚C J 100 10 0 40 80 120 160 Fig. 1 - Max. Forward Voltage Drop Characteristics Reverse Voltage - VR (V) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage 3 31DQ05, 31DQ06 PD-2.305 rev. B 02/2000 3 Average Power Loss - (Watts) Allowable Case Temperature - (°C) 150 120 DC 90 60 Square wave (D = 0.50) 80% Rated VR applied 30 D = 0.20 D = 0.25 D = 0.33 D = 0.50 D = 0.75 2.5 2 RMS Limit 1.5 DC 1 0.5 see note (2) 0 0 1 2 3 4 0 5 0 Average Forward Current - IF(AV)(A) Non-Repetitive Surge Current - IFSM(A) 3 4 5 Fig. 5- Forward Power Loss Characteristics 1000 100 At Any Rated Load Condition And With Rated VRRM Applied Following Surge 100 1000 10000 Square Wave Pulse Duration - tp (microsec) Fig. 6 - Max. Non-Repetitive Surge Current (2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ; Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6); PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ V R1 = 80% rated VR 4 2 Average Forward Current - IF(AV) (A) Fig. 4 - Max. Allowable Case Temperature Vs. Average Forward Current 10 10 1 31DQ05, 31DQ06 PD-2.305 rev. B 02/2000 WORLD HEADQUARTERS: EUROPEAN HEADQUARTERS: IR CANADA: IR GERMANY: IR ITALY: IR FAR EAST: IR SOUTHEAST ASIA: http://www.irf.com 233 Kansas St., El Segundo, California 90245 U.S.A Tel: (310) 322-3331 Fax: (310) 322-3332 Hurst Green, Oxted, Surrey RH8 9BB, U.K. Tel: ++ 44 1883 732020 Fax: ++ 44 1883 733408 7231 Victoria Park Ave., Suite #201, Markham, Ontario L3R 2Z8 Tel: (905) 475 1897. Fax: (905) 475 8801 Saalburgstrasse 157, 61350 Bad Homburg Tel: ++ 49 6172 96590 Fax: ++ 49 6172 965933 Via Liguria 49, 10071 Borgaro, Torino Tel: ++ 39 11 4510111 Fax: ++ 39 11 4510220 K&H Bldg., 2F, 30-4 Nishi-Ikebukuro 3-Chome, Toshima-Ku, Tokyo, Japan 171 Tel: 81 3 3983 0086 Fax: 81 3 3983 0642 315 Outram Road, # 10-02 Tan Boon Liat Building, SINGAPORE 0316. Tel: 65 221 8371. Fax: 65 221 8372. Fax-On-Demand: +44 1883 733420 Data and specifications subject to change without notice 11/97 5