Bulletin PD-2.306 rev. C 05/01 31DQ09 31DQ10 SCHOTTKY RECTIFIER 3.3 Amp Major Ratings and Characteristics Description/Features Characteristics 31DQ.. Units IF(AV) Rectangular 3.3 A 90/100 V IFSM @ tp = 5 s sine 210 A VF 0.85 V - 40 to 150 C waveform VRRM @ 3 Apk, TJ = 25C TJ 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 www.irf.com 1 31DQ09, 31DQ10 Bulletin PD-2.306 rev. C 05/01 Voltage Ratings Part number VR 31DQ09 31DQ10 90 100 Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V) Absolute Maximum Ratings Parameters 31DQ.. Units IF(AV) Max. Average Forward Current 3.3 A * See Fig. 4 IFSM Conditions 50% duty cycle @ TL = 53.4C, rectangular wave form With cooling fins Max. Peak One Cycle Non-Repetitive 210 Surge Current * See Fig. 6 35 A 5s Sine or 3s Rect. pulse Following any rated load condition and with 10ms Sine or 6ms Rect. pulse rated V applied RRM Electrical Specifications Parameters VFM IRM 31DQ.. Units Max. Forward Voltage Drop * See Fig. 1 (1) Conditions 0.85 0.97 0.69 V V V @ 3A @ 6A @ 3A 0.80 V @ 6A Max. Reverse Leakage Current 1 mA TJ = 25 C * See Fig. 2 3 mA TJ = 125 C (1) TJ = 25 C TJ = 125 C VR = rated VR CT Typical Junction Capacitance 110 pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25C LS Typical Series Inductance 9.0 nH Measured lead to lead 5mm from package body 10000 V/s dv/dt Max. Voltage Rate of Change (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 34 C/W DC operation to Lead wt Approximate Weight Case Style 2 1.2 (0.042) g (oz.) C - 16 www.irf.com 31DQ09, 31DQ10 Bulletin PD-2.306 rev. C 05/01 10 10 T J = 150C Reverse Current - IR (mA) 125C 0.1 0.01 0.001 25C 0.0001 0 0 TJ = 150C 1 20 40 60 80 100 Reverse Voltage - VR (V) TJ = 125C Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage TJ = 25C 1000 0.1 0 0.3 0.6 0.9 1.2 Forward Voltage Drop - VFM (V) Junction Capacitance - CT (pF) Instantaneous Forward Current - IF (A) 1 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 31DQ09, 31DQ10 Bulletin PD-2.306 rev. C 05/01 4 Average Power Loss (Watts) Allowable Lead 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 3 DC 2 RMS Limit 1 see note (2) 0 0 1 2 3 4 0 5 0 Average Forward Current - IF(AV)(A) 1 2 3 4 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 - I FSM (A) 1000 At Any Rated Load Condition And With Rated VRRM Applied Following Surge 100 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); PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR 4 5 www.irf.com 31DQ09, 31DQ10 Bulletin PD-2.306 rev. C 05/01 Ordering Information Table Device Code 31 D Q 10 TR 1 2 3 4 5 1 - 31 = 3.3A (Axial and small packages - Current is x10) 2 - D = DO-41 package 3 - Q = Schottky Q.. Series 4 - 10 = Voltage Ratings 5 - TR = Tape & Reel package ( 5000 pcs) 10 = 100V 09 = 90V TB = Tape & Box package (Ammunition -3000 pcs) - = Box package (1000 pcs) Data and specifications subject to change without notice. This product has been designed and qualified for Industrial Level. 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. 05/01 www.irf.com 5