Bulletin PD-20577 rev. D 08/01 20L15T 20L15TS SCHOTTKY RECTIFIER 20 Amps Major Ratings and Characteristics Characteristics Description/Features Values Units IF(AV) Rectangular 20 A VRRM 15 V waveform IFSM @ tp = 5 µs sine 700 A VF @ 19 Apk, TJ=125°C ( Typical) 0.25 V TJ range - 55 to 125 °C The Schottky rectifier module has been optimized for ultra low forward voltage drop specifically for the OR-ing of parallel power supplies. The proprietary barrier technology allows for reliable operation up to 125 °C junction temperature. Typical applications are in parallel switching power supplies, converters, reverse battery protection, and redundant power subsystems. 125°C TJ operation (VR < 5V) Single diode configuration Optimized for OR-ing applications Ultra low forward voltage drop Guard ring for enhanced ruggedness and long term reliability High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance Case Styles 20L15T 20L15TS Base Cathode Base Cathode 2 1 Cathode TO-220AC www.irf.com 1 3 Anode 3 Anode N/C D2PAK 1 20L15T, 20L15TS Bulletin PD-20577 rev. D 08/01 Voltage Ratings Part number VR Values Max. DC Reverse Voltage (V) @ TJ = 100 °C 15 VRWM Max. Working Peak Reverse Voltage (V) @ TJ = 100 °C Absolute Maximum Ratings Parameters Values Units 20 A 50% duty cycle @ TC = 85°C, rectangular wave form A Following any rated load condition and with 10ms Sine or 6ms Rect. pulse rated VRRM applied TJ = 25 °C, IAS = 2 Amps, L = 6 mH IF(AV) Max. Average Forward Current Conditions * See Fig. 5 IFSM Max. Peak One Cycle Non-Repetitive 700 Surge Current * See Fig. 7 330 EAS Non-Repetitive Avalanche Energy 10 mJ IAR Repetitive Avalanche Current 2 A 5µs Sine or 3µs Rect. pulse Current decaying linearly to zero in 1 µsec Frequency limited by TJ max. VA = 1.5 x VR typical Electrical Specifications Parameters VFM IRM Forward Voltage Drop * See Fig. 1 Values Typ. 0.25 0.37 (1) Reverse Leakage Current * See Fig. 2 (1) VF(TO) Threshold Voltage Units Conditions Max. 0.41 0.52 0.33 0.50 V V V V - 10 mA TJ = 25 °C - 600 mA TJ = 100 °C 0.182 V TJ = TJ max. 7.6 mΩ @ 19A @ 40A @ 19A @ 40A TJ = 25 °C TJ = 125 °C VR = rated VR rt Forward Slope Resistance CT Max. Junction Capacitance - 2000 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C LS Typical Series Inductance 8 - nH Measured lead to lead 5mm from package body dv/dt Max. Voltage Rate of Change (Rated VR) 10,000 V/ µs (1) Pulse Width < 300µs, Duty Cycle <2% Thermal-Mechanical Specifications Parameters Values Units °C TJ Max. Junction Temperature Range -55 to 125 Tstg Max. Storage Temperature Range -55 to 150 Conditions °C RthJC Max. Thermal Resistance Junction to Case 1.5 °C/W DCoperation RthCS Typical Thermal Resistance Case to Heatsink 0.50 °C/W Mounting surface , smooth and greased For TO-220 RthJA Max. Thermal Resistance 40 °C/W DC operation For D2Pak Junction to Ambient wt Approximate Weight T MountingTorque 2 * See Fig. 4 2 (0.07) Min. 6 (5) Max. 12 (10) g (oz.) Kg-cm Non-lubricated threads (Ibf-in) www.irf.com 20L15T, 20L15TS Bulletin PD-20577 rev. D 08/01 Reverse C urren t - I R (m A) 10 0 0 100 T J = 100 C 100 75 C 50 C 10 25 C 1 0 .1 0 3 6 9 12 15 Reverse V oltag e - V R (V ) Fig. 2 - Typical Values of Reverse Current Vs. Reverse Voltage 1 00 0 0 T J = 12 5 C 10 Jun ction C a pa cita n ce - C T (pF) Instan ta n eo us Forw ard C ur ren t - I F (A ) 1 00 0 TJ = 7 5 C TJ = 2 5 C 1 T J = 25 C 1 0 00 100 0 0 .2 0 .4 0.6 0.8 1 1 .2 1.4 1 .6 0 5 10 15 Forw a rd V olta ge D rop - V FM (V ) Reverse V olta ge - VR (V ) Fig. 1 - Maximum Forward Voltage Drop Characteristics Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage 20 Th erm a l Im pedance Z thJC ( C /W ) 10 1 D D D D D = = = = = 0 .75 0 .50 0 .33 0 .25 0 .2 0 PD M t1 0 .1 Sin gle Pu lse (Therm a l Resista n ce) 0 .0 1 0.00 00 1 0 .00 0 1 0 .0 01 0.0 1 Notes: t2 1. D uty factor D = t 1/ t 2 2. Peak T J = P D M x Z thJC+ T C 0 .1 1 10 100 t 1 , Re ctan g ular Pu lse D ura tio n (Seco nd s) Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics www.irf.com 3 20L15T, 20L15TS 1 00 14 95 12 A vera ge Pow er Loss - (W a tts) Allow a b le Ca se Te m pera t ure - ( C ) Bulletin PD-20577 rev. D 08/01 90 85 Squa re w ave (D = 0.50) 80 75 D D D D D 10 = = = = = 0.20 0.25 0.33 0.50 0.75 RM S Lim it 8 DC 6 4 2 se e no te ( 2) 70 0 0 4 8 12 16 20 24 0 A vera ge Forw ard C urren t - I F(AV) (A) 5 10 15 20 25 30 A vera ge Forw a rd C urren t - I F(AV) (A) Fig. 5 - Maximum Allowable Case Temperature Vs. Average Forward Current Fig. 6 - Forward Power Loss Characteristics Non-Repetitive Surge C urrent - I FSM (A) 1000 At An y Rated Load C ond ition An d W ith Rated V RRM Ap plied Follow in g Surg e 100 10 100 1000 10000 Sq uare W ave Pulse D uration - t p (m icrosec) Fig. 7 - Maximum Non-Repetitive Surge Current L IRFP460 D UT Rg = 25 ohm C UR RE N T M O N ITO R H IG H -SPE ED SW ITC H FREE-W HE EL D IO D E + V d = 25 V olt 40H FL40S02 Fig. 8 - Unclamped Inductive Test Circuit (2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ; Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6); PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR 4 www.irf.com 20L15T, 20L15TS Bulletin PD-20577 rev. D 08/01 Outline Table 4.69 (0.18) 4.20 (0.16) 10.16 (0.40) REF. 1.32 (0.05) 1.22 (0.05) 6.47 (0.25) 15.49 (0.61) 93° 6.18 (0.24) 14.73 (0.58) 5.28 (0.21) 2.61 (0.10) 4.78 (0.19) 2.32 (0.09) 0.55 (0.02) 8.89 (0.35) 3X REF. 1.40 (0.055) 1.14 (0.045) 2X Base Cathode 0.46 (0.02) 0.93 (0.37) MINIMUM RECOMMENDED FOOTPRINT 0.69 (0.27) 11.43 (0.45) 2 1 3 4.57 (0.18) 8.89 (0.35) 4.32 (0.17) 2 1 N/C 3 Anode 17.78 (0.70) 0.61 (0.02) MAX. 5.08 (0.20) REF. 3.81 (0.15) 2.08 (0.08) Conform to JEDEC outline D2Pak (SMD-220) Dimensions in millimeters and (inches) 2X 2.54 (0.10) 2X Tape & Reel Information TRR 1.60 (0.063) 1.50 (0.059) 4.10 (0.161) 3.90 (0.153) 1.60 (0.063) 1.50 (0.059) DIA. 0.368 (0.0145) 0.342 (0.0135) FEED DIR ECTION 1.85 (0.073) 1.65 (0.065) 11.60 (0.457) 11.40 (0.449) 15.42 (0.609) 15.22 (0.601) TRL 1.75 (0.069) 10.90 (0.429) 10.70 (0.421) 1.25 (0.049) 24.30 (0.957) 23.90 (0.941) DIA. 16.10 (0.634) 4.72 (0.186) 4.52 (0.178) 15.90 (0.626) FEED DIRECTION 13.50 (0.532) 12.80 (0.504) DIA. 26.40 (1.039) 24.40 (0.961) SMD-220 Tape & Reel When ordering, indicate the part number, part orientation, and the quantity. Quantities are in multiples 360 (14.173) DIA. MAX. 60 (2.362) of 800 pieces per reel for both TRL and TRR. D IA . MIN . Dimensions in millimeters and (inches) www.irf.com 5 20L15T, 20L15TS Bulletin PD-20577 rev. D 08/01 Outline Table 10.54 (0.41) MAX. 3.78 (0.15) 3.54 (0.14) 1.32 (0.05) 2.92 (0.11) 2.54 (0.10) TERM 2 15.24 (0.60) 14.84 (0.58) 1 1.22 (0.05) DIA. 6.48 (0.25) 6.23 (0.24) 3 14.09 (0.55) 3.96 (0.16) 13.47 (0.53) 3.55 (0.14) 2° 0.10 (0.004) 2.04 (0.080) MAX. 1.40 (0.05) 2.89 (0.11) 1.15 (0.04) Base Cathode 2.64 (0.10) 0.94 (0.04) 0.69 (0.03) 1 4.57 (0.18) 3 0.61 (0.02) MAX. 1 4.32 (0.17) Cathode 3 Anode 5.08 (0.20) REF. Conform to JEDEC outline TO-220AC Dimensions in millimeters and (inches) Data and specifications subject to change without notice. This product has been designed and qualified for Industrial Level. Qualification Standards can be found on IR's Web site. IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7309 Visit us at www.irf.com for sales contact information. 08/01 6 www.irf.com