20CLQ045 IRF | Alldatasheet
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20A, 45V 20CLQ045 Major Ratings and Characteristics Description/Features 12/03/03 CASE STYLE www.irf.com 1 Characteristics 20CLQ045 Units IF(AV) Rectangular 20 A waveform VRRM (Per Leg) 45 V IFSM @ tp = 8.3ms half-sine 250 A (Per Leg) VF @ 10Apk, TJ =125°C 0.48 V (Per Leg) TJ, Tstg Operating and storage-55 to 150 °C ANODE COMMON ANODE CATHODE 12 3 HIGH EFFICIENCY SERIES Case Outline and Dimensions SMD-1 PD -20352F 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 (ISOLATED BASE)
2 www.irf.com Part number 20CLQ045 VR Max. DC Reverse Voltage (V) (Per Leg) VRWM Max. Working Peak Reverse Voltage (V) (Per Leg) Voltage Ratings Parameters Limits Units Conditions IF(AV) Max. Average Forward Current 20 A 50% duty cycle @ T C = 100°C, rectangular waveform See Fig. 5 IFSM Max. Peak One Cycle Non - Repetitive 250 A @ tp = 8.3 ms half-sine Surge Current (Per Leg) Absolute Maximum Ratings /G81 Pulse Width < 300µs, Duty Cycle < 2% Parameters Limits Units Conditions TJ Max.Junction Temperature Range -55 to 150 °C Tstg Max. Storage Temperature Range -55 to 150 °C R thJC Max. Thermal Resistance, Junction 1.67 °C/W DC operation See Fig. 4 to Case (Per Leg) R thJC Max. Thermal Resistance, Junction 0.83 °C/W DC operation to Case (Per Package) wt Weight (Typical) 2.6 g Die Size 125X125 mils Case Style SMD-1 Thermal-Mechanical Specifications Parameters Limits Units Conditions VFM Max. Forward Voltage Drop 0.57 V @ 10A (Per Leg) See Fig. 1/G81 0.69 V @ 20A
0.48 V @ 10A
0.61 V @ 20A
IRM Max. Reverse Leakage Current 0.5 mA T J = 25°C V R = rated VR (Per Leg) See Fig. 2 /G81 15 mA T J = 125°C CT Max. Junction Capacitance (Per Leg) 900 pF V R = 5VDC ( 1MHz, 25°C ) LS Typical Series Inductance (Per Leg) 5.9 nH Measured from center of cathode pad to center of anode pad Electrical Specifications TJ = 25°C TJ =1 25°C
www.irf.com 3 Fig. 2 - Typical Values of Reverse Current Vs. Reverse Voltage (Per Leg) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) Fig. 1 - Max. Forward Voltage Drop Characteristics (Per Leg) 0.0001 0.001 0.01 0.1 100 0 5 10 15 20 25 30 35 40 45 75°C 50°C 25°C 125°C 150°C T = 175°CJ A
4 www.irf.com Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg) 20CLQ045 RthJC (DC) = 0.83°C/W 0.01 0.1 /G20 Notes: 1. Duty factor D =t / t 2. Peak T= P x Z + T 1 2 J DM thJC C /G20 P t t DM t , Rectangular Pulse Duration (sec) Thermal Response (Z ) thJC 0.01 0.02 0.05 0.10 0.20 D = 0.50 /G20 SINGLE PULSE (THERMAL RESPONSE) 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