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| PD-2.293 rev. A 12/97 181NQ... SERIES SCHOTTKY RECTIFIER Major Ratings and Characteristics Characteristics IF(AV) Rectangular waveform VRRM range IFSM @ tp = 5 s sine VF TJ @ 180Apk, TJ=125C range 180 Amp Description/Features Units A V A V C The 181NQ high current Schottky rectifier module series has been optimized for very low forward voltage drop, with moderate leakage. The proprietary barrier technology allows for reliable operation up to 175 C junction temperature. Typical applications are in switching power supplies, converters, freewheeling diodes, and reverse battery protection. 175 C TJ operation Unique high power, Half-Pak module Replaces three parallel DO-5's Easier to mount and lower profile than DO-5's 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 181NQ... 180 35 to 45 22,000 0.56 - 55 to 175 CASE STYLE AND DIMENSIONS Outline HALF PAK Module Dimensions in millimeters and inches www.irf.com 1 181NQ... Series PD-2.293 rev. A 12/97 Voltage Ratings Part number VR Max. DC Reverse Voltage (V) 35 40 45 VRWM Max. Working Peak Reverse Voltage (V) 181NQ035 181NQ040 181NQ045 Absolute Maximum Ratings Parameters IF(AV) Max. Average Forward Current * See Fig. 5 IFSM EAS IAR Max. Peak One Cycle Non-Repetitive Surge Current * See Fig. 7 Non-Repetitive Avalanche Energy Repetitive Avalanche Current 181NQ Units 180 22,000 2500 243 36 A mJ A A Conditions 50% duty cycle @ T C = 125 C, rectangular wave form 5s Sine or 3s Rect. pulse 10ms Sine or 6ms Rect. pulse Following any rated load condition and with rated VRRM applied TJ = 25 C, IAS= 36 Amps, L = 0.38 mH Current decaying linearly to zero in 1 sec Frequency limited by TJ max. V A = 1.5 x VR typical Electrical Specifications Parameters VFM Max. Forward Voltage Drop * See Fig. 1 (1) 181NQ Units 0.66 0.80 0.56 0.69 V V V V mA mA pF nH V/ s @ 180A @ 360A @ 180A @ 360A TJ = 25 C TJ = 125 C Conditions TJ = 25 C TJ = 125 C VR = rated VR IRM CT LS Max. Reverse Leakage Current (1) * See Fig. 2 Max. Junction Capacitance Typical Series Inductance 15 135 7800 6.0 10,000 VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 C From the top of terminal hole to mounting plane dv/dt Max. Voltage Rate of Change (Rated VR) (1) Pulse Width < 300s, Duty Cycle < 2% Thermal-Mechanical Specifications Parameters TJ Tstg Max. Junction Temperature Range Max. Storage Temperature Range 181NQ Units -55 to 175 -55 to 175 0.30 0.10 C C C/W C/W DCoperation Conditions RthJC Max. Thermal Resistance Junction to Case RthCS Typical Thermal Resistance, Case to Heatsink wt T Approximate Weight Mounting Torque Terminal Torque Case Style Min. Max. Min. Max. * See Fig. 4 Mounting surface , smooth and greased 25.6 (0.9) g (oz.) 40 (35) 58 (50) 58 (50) 86 (75) Non-lubricated threads Kg-cm (Ibf-in) HALF PAK Module 2 www.irf.com 181NQ... Series PD-2.293 rev. A 12/97 10 00 10 00 10 0 1 0 1 5C 2 1 . 1 .0 1 2 5C .0 01 0 5 11223344 05050505 R v r eV lt g - V ( ) e es o a e R V 1 0C 0 7 5C 5 0C T =1 5C 7 J 1 0C 5 In ta ta e u F r a C r n - I ( ) s n n o s o w rd u re t A F 10 0 T =1 5 C 7 J T =1 5 C 2 J T= 2 5C J 1 0 R v r eC rr n - I ( A e es u e t m) R Fig. 2 - Typical Values of Reverse Current Vs. Reverse Voltage 100 00 J n tio C p c n - C ( F u c n a a ita ce p) T T =2 5C J 1 0 . 2 .4 . 6 .8 1 10 00 0 1 0 2 0 3 0 4 0 5 0 F r a V lta eDo - V ( ) o w rd o g r p V F M R v r eV lta e- V (V e es o g R) Fig. 1 - Maximum Forward Voltage Drop Characteristics 1 T e m l Im e a c -Z h r a p d ne ( CW / ) th C J Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage D=0 0 .5 .1 D=03 .3 D=0 5 .2 D=0 7 .1 D=0 8 .0 .1 0 PM D t 1 t 2 N te : os 1 D tyfa to D= t1/ t2 .u cr S g P ls in le u e ( h r a R s ta c ) T e m l e is n e 2 P a T =P xZ . ek +T JD M th C C J .0 1 . 1 1 1 0 10 0 .0 1 0 .0 0 1 00 .0 0 01 .0 1 0 t , R c n u r P ls D ra n( e o d ) e ta g la u e u tio S c n s 1 Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics www.irf.com 3 181NQ... Series PD-2.293 rev. A 12/97 10 8 A w b C s T m ea r - ( C llo a le a e e p r tu e ) 11 Q 8N R J ( C =03 / . 0 CW th C D ) 10 5 D=0 8 .0 D=0 7 .1 15 2 D=0 5 .2 D=0 3 .3 .5 1 0 D=0 0 0 7 5 5 0 2 5 0 0 D C 10 7 10 6 A e g P w r L s - (W tts v ra e o e o s a) R SL it M im 10 5 D C 10 4 10 3 0 4 0 8 0 10 10 20 20 20 2 6 0 4 8 4 0 8 0 10 10 20 20 20 2 6 0 4 8 A e g F rw r C r e t - IFA ) ( ) v ra e o a d u r n (V A A ea eF rw r C r e t - I v r g o ad u r n (A ) FA ) (V Fig. 5 - Maximum Allowable Case Temperature Vs. Average Forward Current 100000 FSM Fig. 6 - Forward Power Loss Characteristics At Any Rated Load Condition And With Rated V RRM Applied Following Surge Non-Repetitive Surge Current - I (A) 10000 1000 10 100 1000 10000 Square Wave Pulse Duration - tp (microsec) Fig. 7 - Maximum Non-Repetitive Surge Current L HIGH-SPEED SWITCH FREE-WHEEL DIODE 40HFL40S02 Vd = 25 Volt DUT IRFP460 Rg = 25 ohm + CURRENT MONITOR Fig. 8 - Unclamped Inductive Test Circuit 4 www.irf.com |
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