Schottky Rectifier, 2. A VS-MQNPbF Vishay High Power Products SMA Cathode Anode FEATURES Small foot print, surface mountable Low forward voltage drop High frequency operation Guard ring for enhanced ruggedness and long term reliability Meets MSL level, per J-STD-2, LF maximum peak of 26 C Compliant to RoHS directive 22/95/EC Designed and qualified for industrial level PRODUCT SUMMARY I F(AV) V R 2. A V DESCRIPTION The VS-MQNPbF surface mount Schottky rectifier has been designed for applications requiring low forward drop and very small foot prints on PC boards. Typical applications are in disk drives, switching power supplies, converters, freewheeling diodes, battery charging, and reverse battery protection. MAJOR RATINGS AND CHARACTERISTICS SYMBOL CHARACTERISTICS VALUES UNITS I F(AV) DC 2. A V RRM V I FSM t p = 5 μs sine 2 A V F.5 Apk,.68 V Range - 55 to 5 C VOLTAGE RATINGS PARAMETER SYMBOL VS-MQNPbF UNITS Maximum DC reverse voltage V R Maximum working peak reverse voltage V RWM V ABSOLUTE MAXIMUM RATINGS Maximum average forward current See fig. 4 I F(AV) 5 % duty cycle at T L = 26 C, rectangular waveform On PC board 9 mm 2 island (.3 mm thick copper pad area).5 A Maximum peak one cycle 5 μs sine or 3 μs rect. pulse Following any rated 2 non-repetitive surge current, I FSM load condition and with A See fig. 6 ms sine or 6 ms rect. pulse rated V RRM applied 3 Non-repetitive avalanche energy E AS, I AS =.5 A, L = 8 mh. mj Current decaying linearly to zero in μs Repetitive avalanche current I AR.5 A Frequency limited by maximum V A =.5 x V R typical Document Number: 949 For technical questions, contact: diodestech@vishay.com www.vishay.com Revision: 3-Mar-
VS-MQNPbF Vishay High Power Products Schottky Rectifier, 2. A ELECTRICAL SPECIFICATIONS A.78 Maximum forward voltage drop.5 A.85 V () FM See fig. A.63.5 A.68 V Maximum reverse leakage current. I RM See fig. 2 V R = Rated V R ma Threshold voltage V F(TO).52 V = maximum Forward slope resistance r t 78.4 mω Typical junction capacitance C T V R = V DC,, test signal = MHz 38 pf Typical series inductance L S Measured lead to lead 5 mm from package body 2. nh Maximum voltage rate of change dv/dt Rated V R V/μs () Pulse width < 3 μs, duty cycle < 2 % THERMAL - MECHANICAL SPECIFICATIONS Maximum junction and storage temperature range T () J, T Stg - 55 to 5 C Maximum thermal resistance, junction to ambient R thja DC operation 8 C/W Approximate weight.7 g.2 oz. Marking device Case style SMA (similar D-64) VJ dp () tot ------------ < ------------- thermal runaway condition for a diode on its own heatsink d R thja www.vishay.com For technical questions, contact: diodestech@vishay.com Document Number: 949 2 Revision: 3-Mar-
VS-MQNPbF Schottky Rectifier, 2. A Vishay High Power Products I F - Instantaneous Forward Current (A) = 5 C..4.6.8..2.4.6 V FM - Forward Voltage Drop (V) Fig. - Maximum Forward Voltage Drop Characteristics Allowable Case Temperature ( C) 5 4 3 2 D =.2 D =.25 D =.33 D =.5 D =.75 Square wave (D =.5) 8 % rated V R applied DC See note () 9.4.8.2.6 2. 2.4 I F(AV) - Average Forward Current (A) Fig. 4 - Maximum Average Forward Current vs. Allowable Lead Temperature I R - Reverse Current (ma).... = 5 C = C = 75 C = 5 C Average Power Loss (W).6.4.2..8.6.4.2 D =.2 D =.25 D =.33 D =.5 D =.75 DC RMS limit 2 4 6 V R - Reverse Voltage (V) 8 Fig. 2 - Typical Peak Reverse Current vs. Reverse Voltage.4.8.2.6 2. 2.4 I F(AV) - Average Forward Current (A) Fig. 5 - Maximum Average Forward Dissipation vs. Average Forward Current C T - Junction Capacitance (pf) 2 4 6 8 V R - Reverse Voltage (V) At any rated load condition and with rated V RRM applied following surge t p - Square Wave Pulse Duration (µs) Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage Fig. 6 - Maximum Peak Surge Forward Current vs. Pulse Duration () Formula used: T C = - (Pd + Pd REV ) x R thjc ; Pd = Forward power loss = I F(AV) x V FM at (I F(AV) /D) (see fig. 6); Pd REV = Inverse power loss = V R x I R ( - D); I R at V R = 8 % rated V R I FSM - Non-Repetitive Surge Current (A) Document Number: 949 For technical questions, contact: diodestech@vishay.com www.vishay.com Revision: 3-Mar- 3
VS-MQNPbF Vishay High Power Products Schottky Rectifier, 2. A ORDERING INFORMATION TABLE Device code VS- M Q N TR PbF 2 3 4 5 6 7 8 - HPP product suffix 2 - Current rating 3 - M = SMA 4 - Q = Schottky Q series 5 - Voltage rating ( = V) 6 - N = New SMA 7 - None = Box ( pieces) TR = Tape and reel (75 pieces) 8 - PbF = Lead (Pb)-free Dimensions Part marking information Packaging information SPICE model LINKS TO RELATED DOCUMENTS Tape and reel Bulk www.vishay.com/doc?958 www.vishay.com/doc?9529 www.vishay.com/doc?9534 www.vishay.com/doc?95397 www.vishay.com/doc?9537 www.vishay.com For technical questions, contact: diodestech@vishay.com Document Number: 949 4 Revision: 3-Mar-
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