Bulletin PD-2.305 rev. G 04/05 31DQ05 31DQ06 SCHOTTKY RECTIFIER 3.3 Amp Major Ratings and Characteristics Description/ Features 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. Characteristics Values Units IF(AV) Rectangular 3.3 A 50/60 V IFSM @ tp = 5 s sine 340 A Low profile, axial leaded outline High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance VF 0.62 V High frequency operation - 40 to 150 C waveform VRRM @ 3 Apk, TJ = 25C TJ Very low forward voltage drop Guard ring for enhanced ruggedness and long term reliability Lead-Free plating CASE STYLE AND DIMENSIONS Outline C - 16 Dimensions in millimeters and inches www.irf.com 1 31DQ05, 31DQ06 Bulletin PD-2.305 rev. G 04/05 Voltage Ratings Part number VR Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) 31DQ05 31DQ06 50 60 Absolute Maximum Ratings Parameters 31DQ.. Units 3.3 A 50% duty cycle @ TL = 105C, rectangular wave form A 5s Sine or 3s Rect. pulse Following any rated load condition and with 10ms Sine or 6ms Rect. pulse rated VRRM applied IF(AV) Max. Average Forward Current Conditions * See Fig. 4 IFSM Max. Peak One Cycle Non-Repetitive 340 Surge Current * See Fig. 6 55 EAS Non-Repetitive Avalanche Energy 5.0 mJ IAR Repetitive Avalanche Current 1.0 A TJ = 25 C, IAS = 1 Amps, L = 10 mH Current decaying linearly to zero in 1 sec Frequency limited by TJ max. VA = 1.5 x VR typical Electrical Specifications Parameters VFM IRM 31DQ.. Units Conditions Max. Forward Voltage Drop 0.62 V @ 3A * See Fig. 1 0.78 V @ 6A 0.54 V @ 3A 0.65 V @ 6A Max. Reverse Leakage Current 2 mA TJ = 25 C * See Fig. 2 15 mA TJ = 125 C 160 pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25C 9.0 nH Measured lead to lead 5mm from package body 10000 V/s (1) (1) CT Typical Junction Capacitance LS Typical Series Inductance dv/dt Max. Voltage Rate of Change TJ = 25 C TJ = 125 C VR = rated VR (Rated VR) (1) Pulse Width < 300s, 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 DC operation Without cooling fins RthJL Typical Thermal Resistance Junction to Lead 15 C/W DC operation wt Approximate Weight Case Style (*) dPtot dTj 2 < 1 Rth( j-a) 1.2 (0.042) g (oz.) C - 16 thermal runaway condition for a diode on its own heatsink www.irf.com 31DQ05, 31DQ06 Bulletin PD-2.305 rev. G 04/05 100 T J = 150C 10 Reverse Current - IR (mA) 125C 1 0.1 0.01 25C 0.001 0 TJ = 150C 1 20 40 60 Reverse Voltage - VR (V) TJ = 125C Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage TJ = 25C 1000 0.1 0 0.2 0.4 0.6 0.8 1 Forward Voltage Drop - VFM (V) Junction Capacitance - C T (pF) Instantaneous Forward Current - IF (A) 10 T = 25C 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 www.irf.com 3 31DQ05, 31DQ06 Bulletin PD-2.305 rev. G 04/05 3 Average Power Loss (Watts) Allowable Lead Temperature (C) 150 DC 130 110 Square wave (D = 0.50) 90 80% Rated Vr applied 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) 70 0 1 2 3 4 0 5 0 Average Forward Current - IF(AV) (A) 1 2 3 4 5 Average Forward Current - IF(AV) (A) Fig. 4 - Max. Allowable Lead Temperature Vs. Average Forward Current Fig. 5 - Forward Power Loss Characteristics Non-Repetitive Surge Current - IFSM (A) 1000 100 At Any Rated Load Condition And With Rated VRRM Applied Following Surge 10 10 100 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); Pd REV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR 4 www.irf.com 31DQ05, 31DQ06 Bulletin PD-2.305 rev. G 04/05 Ordering Information Table Device Code 31 D Q 06 TR 1 2 3 4 5 1 - 31 = 3.1A (Axial and small packages - Current is x10) 2 - D = DO-201 package 3 - Q = Schottky Q.. Series 4 - 06 = Voltage Ratings 5 - y TR = Tape & Reel package (1200 pcs) 06 = 60V 05 = 50V y none = Box package (500 pcs) Data and specifications subject to change without notice. This product has been designed and qualified for Industrial Level and Lead-Free. Qualification Standards can be found on IR's Web site. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7309 Visit us at www.irf.com for sales contact information. 04/05 www.irf.com 5