PD -20352F 20CLQ045 SCHOTTKY RECTIFIER HIGH EFFICIENCY SERIES 20A, 45V Major Ratings and Characteristics Characteristics Description/Features 20CLQ045 Units IF(AV) Rectangular waveform VRRM (Per Leg) 20 A 45 V IFSM @ tp = 8.3ms half-sine (Per Leg) 250 A VF @ 10Apk, TJ =125°C (Per Leg) 0.48 V TJ, Tstg Operating and storage -55 to 150 °C The 20CLQ045 center tap Schottky rectifier has been expressly designed to meet the rigorous requirements of hi-rel environments. It is packaged in the hermetic surface mount SMD-1 ceramic package. The device's forward voltage drop and reverse leakage current are optimized for the lowest power loss and the highest circuit efficiency for typical high frequency switching power supplies and resonent power converters. Full MIL-PRF-19500 quality conformance testing is available on source controlled drawings to TX, TXV and S levels. • • • • • Hermetically Sealed Center Tap Low Forward Voltage Drop High Frequency Operation Guard Ring for Enhanced Ruggedness and Long Term Reliability • Surface Mount • Lightweight CASE STYLE (ISOLATED BASE) 2 1 3 ANODE COMMON ANODE CATHODE Case Outline and Dimensions SMD-1 www.irf.com 1 12/03/03 20CLQ045 Voltage Ratings Part number VR 20CLQ045 Max. DC Reverse Voltage (V) (Per Leg) 45 VRWM Max. Working Peak Reverse Voltage (V) (Per Leg) Absolute Maximum Ratings Parameters IF(AV) Max. Average Forward Current Limits Units 20 A 50% duty cycle @ TC = 100°C, rectangular waveform Conditions 250 A @ tp = 8.3 ms half-sine See Fig. 5 I FSM Max. Peak One Cycle Non - Repetitive Surge Current (Per Leg) Electrical Specifications Parameters Limits Units Max. Forward Voltage Drop 0.57 V @ 10A (Per Leg) See Fig. 1Q 0.69 V @ 20A 0.48 V @ 10A 0.61 V @ 20A Max. Reverse Leakage Current 0.5 mA TJ = 25°C (Per Leg) See Fig. 2 Q 15 mA TJ = 125°C CT Max. Junction Capacitance (Per Leg) 900 pF LS Typical Series Inductance (Per Leg) 5.9 nH V FM I RM Conditions TJ = 25°C TJ =1 25°C VR = rated VR VR = 5VDC ( 1MHz, 25°C ) Measured from center of cathode pad to center of anode pad Thermal-Mechanical Specifications Parameters Limits Units Conditions TJ Max.Junction Temperature Range -55 to 150 Tstg Max. Storage Temperature Range -55 to 150 °C 1.67 °C/W DC operation 0.83 °C/W DC operation RthJC Max. Thermal Resistance, Junction °C See Fig. 4 to Case (Per Leg) RthJC Max. Thermal Resistance, Junction to Case (Per Package) wt Weight (Typical) Die Size Case Style 2.6 g 125X125 mils SMD-1 Q Pulse Width < 300µs, Duty Cycle < 2% 2 www.irf.com 20CLQ045 100 TJ = 175°C 10 150°C 125°C 1 75°C 0.1 50°C 0.01 25°C 0.001 A 0.0001 0 5 10 15 20 25 30 35 40 45 Fig. 2 - Typical Values of Reverse Current Vs. Reverse Voltage (Per Leg) Fig. 1 - Max. Forward Voltage Drop Characteristics (Per Leg) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) www.irf.com 3 20CLQ045 Thermal Response (Z thJC ) 10 1 D = 0.50 0.20 0.10 0.1 0.02 0.01 0.01 0.00001 P DM 0.05 t1 SINGLE PULSE (THERMAL RESPONSE) t2 Notes: 1. Duty factor D = t 1 / t 2 2. Peak TJ = P DM x Z thJC + TC 0.0001 0.001 0.01 0.1 1 10 t1 , Rectangular Pulse Duration (sec) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg) 20CLQ045 R thJC (DC) = 0.83°C/W Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 IR LEOMINSTER : 205 Crawford St., Leominster, Massachusetts 01453, USA Tel: (978) 534-5776 TAC Fax: (310) 252-7903 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 12/03 4 www.irf.com