Ultrafast Rectifier FFA40UP35S tm Features 40A, 350V Ultrafast Rectifier * High Speed Switching, trr < 55ns @ IF = 40A The FFA40UP35S is utrafast rectifier with low forward voltage drop. It is silicon nitride passivated ion-implanted epitaxial planar construction. * High Reverse Voltage and High Reliability This device is intended for use as freewheeling/clamping rectifiers in a variety of switching power supplies and other power swithching applications. Its low stored charge and hyperfast soft recovery minimize ringing and electrical noise in many power switching circuits reducing power loss in the switching transistors. * Avalanche Energy Rated * Low Forward Voltage, VF < 1.6V * RoHS compliant Applications * General Purpose * Switching Mode Power Supply * Free-wheeling diode for motor application * Power switching circuits 1 2 3 TO3P 1. Anode 2. Cathode 3. Anode 1. Anode 2. Cathode 3. Anode Absolute Maximum Ratings TC = 25oC unless otherwise noted Symbol VRRM Peak Repetitive Reverse Voltage VRWM VR IF(AV) Average Rectified Forward Current IFSM Non-repetitive Peak Surge Current 60Hz Single Half-Sine Wave TJ, TSTG Parameter Ratings 350 Units V Working Peak Reverse Voltage 350 V DC Blocking Voltage 350 V 40 A @ TC = 111oC 400 Operating and Storage Temperature Range A o -65 to +150 C Thermal Characteristics Symbol RJC Parameter Ratings Maximum Thermal Resistance, Junction to Case Units o 0.8 C/W Package Marking and Ordering Information Device Marking Device Package Reel Size Tape Width Quantity F40UP35S FFA40UP35STU TO3P - - 30 (c)2008 Fairchild Semiconductor Corporation FFA40UP35S Rev. A 1 www.fairchildsemi.com FFA40UP35S March 2008 Symbol Min. Typ. Max. Units VFM1 IF = 40A IF = 40A TC = 25oC TC = 125oC - - 1.6 1.5 V IRM1 VR = 350V VR = 350V TC = 25oC TC = 125oC - - 100 500 A IF = 1A, di/dt = 100A/s, VR = 30V IF = 40A, di/dt = 200A/s, VR = 230V TC = 25oC - 26 28 53 55 ns ta tb Qrr IF = 40A, di/dt = 200A/s, VR = 230V TC = 25oC - 17 11 36 - ns ns nC WAVL Avalanche Energy ( L = 40mH) 20 - - mJ trr Parameter Notes: 1: Pulse: Test Pulse width = 300s, Duty Cycle = 2% Test Circuit and Waveforms FFA40UP35S Rev. A 2 www.fairchildsemi.com FFA40UP35S Electrical Characteristics TC = 25oC unless otherwise noted FFA40UP35S Typical Performance Characteristics Figure 2. Typical Reverse Current vs. Reverse Voltage Figure 1. Typical Forward Voltage Drop vs. Forward Current 100 100 Reverse Current , IR [A] Forward Current, IF [A] 10 o 10 TC = 125 C o TC = 75 C o TC = 25 C 1 o TC = 75 C 0.1 1E-3 0.5 1.0 1.5 Forward Voltage, VF [V] 2.0 Figure 3.Typical Junction Capacitance Reverse Recovery Time, trr [s] 400 320 240 160 1 10 Reverse Voltage, VR [V] 350 o 40 o TC = 75 C 30 o TC = 25 C 200 300 di/dt [A/s] 400 500 Figure 6. Forward Current Derating Curve 100 8 Average Forward Current, IF(AV) [A] 10 o TC = 125 C o TC = 75 C o 4 TC = 25 C 2 IF = 40A FFA40UP35S Rev. A 300 TC = 125 C 20 100 100 Figure 5. Typical Reverse Recovery Current vs. di/dt 100 100 200 Reverse Voltage, VR [V] IF = 40A 480 6 10 50 Typical Capacitance at 0V = 530 pF 80 0.1 o TC = 25 C Figure 4. Typical Reverse Recovery Time vs. di/dt 560 Capacitances , Cj [pF] 1 0.01 0.2 0.0 Reverse Recovery Current, Irr [A] o TC = 125 C 200 300 di/dt [A/s] 400 75 50 25 0 25 500 3 50 75 100 125 o Case temperature, TC [ C] 150 www.fairchildsemi.com FFA40UP35S Mechanical Dimensions TO3P Dimensions in Millimeters FFA40UP35S Rev. A 4 www.fairchildsemi.com The following are registered and unregistered trademarks and service marks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. 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Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. I32 FFA40UP35S Rev. A 5 www.fairchildsemi.com FFA40UP35S TRADEMARKS