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| MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by 1N5820/D Designer'sTM Data Sheet Axial Lead Rectifiers . . . employing the Schottky Barrier principle in a large area metal-to-silicon power diode. State-of-the-art geometry features chrome barrier metal, epitaxial construction with oxide passivation and metal overlap contact. Ideally suited for use as rectifiers in low-voltage, high-frequency inverters, free wheeling diodes, and polarity protection diodes. * Extremely Low vF * Low Power Loss/High Efficiency * Low Stored Charge, Majority Carrier Conduction Mechanical Characteristics: * Case: Epoxy, Molded * Weight: 1.1 gram (approximately) * Finish: All External Surfaces Corrosion Resistant and Terminal Leads are Readily Solderable * Lead and Mounting Surface Temperature for Soldering Purposes: 220C Max. for 10 Seconds, 1/16 from case * Shipped in plastic bags, 5,000 per bag * Available Tape and Reeled, 1500 per reel, by adding a "RL'' suffix to the part number * Polarity: Cathode indicated by Polarity Band * Marking: 1N5820, 1N5821, 1N5822 MAXIMUM RATINGS Rating Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage Non-Repetitive Peak Reverse Voltage RMS Reverse Voltage Average Rectified Forward Current (2) VR(equiv) 0.2 VR(dc), TL = 95C (RJA = 28C/W, P.C. Board Mounting, see Note 2) Symbol VRRM VRWM VR VRSM VR(RMS) IO 1N5820 20 1N5821 30 1N5820 1N5821 1N5822 1N5820 and 1N5822 are Motorola Preferred Devices SCHOTTKY BARRIER RECTIFIERS 3.0 AMPERES 20, 30, 40 VOLTS CASE 267-03 PLASTIC 1N5822 40 Unit V 24 14 36 21 3.0 48 28 V V A v Ambient Temperature Rated VR(dc), PF(AV) = 0 RJA = 28C/W Non-Repetitive Peak Surge Current (Surge applied at rated load conditions, half wave, single phase 60 Hz, TL = 75C) Operating and Storage Junction Temperature Range (Reverse Voltage applied) Peak Operating Junction Temperature (Forward Current applied) TA 90 85 80 C IFSM 80 (for one cycle) A TJ, Tstg TJ(pk) *65 to +125 150 C C *THERMAL CHARACTERISTICS (Note 2) Characteristic Thermal Resistance, Junction to Ambient (1) Pulse Test: Pulse Width = 300 s, Duty Cycle = 2.0%. (2) Lead Temperature reference is cathode lead 1/32 from case. * Indicates JEDEC Registered Data for 1N5820-22. Designer's Data for "Worst Case" Conditions -- The Designer's Data Sheet permits the design of most circuits entirely from the information presented. SOA Limit curves -- representing boundaries on device characteristics -- are given to facilitate "worst case" design. Preferred devices are Motorola recommended choices for future use and best overall value. Rev 2 Symbol RJA Max 28 Unit C/W (c)RectifierInc. 1996 Data Motorola, Device 1 1N5820 1N5821 1N5822 *ELECTRICAL CHARACTERISTICS (TL = 25C unless otherwise noted) (2) Characteristic Maximum Instantaneous Forward Voltage (1) (iF = 1.0 Amp) (iF = 3.0 Amp) (iF = 9.4 Amp) Maximum Instantaneous Reverse Current @ Rated dc Voltage (1) TL = 25C TL = 100C (1) Pulse Test: Pulse Width = 300 s, Duty Cycle = 2.0%. (2) Lead Temperature reference is cathode lead 1/32 from case. * Indicates JEDEC Registered Data for 1N5820-22. Symbol VF 0.370 0.475 0.850 iR 2.0 20 2.0 20 2.0 20 0.380 0.500 0.900 0.390 0.525 0.950 mA 1N5820 1N5821 1N5822 Unit V NOTE 1 -- DETERMINING MAXIMUM RATINGS Reverse power dissipation and the possibility of thermal runaway must be considered when operating this rectifier at reverse voltages above 0.1 VRWM. Proper derating may be accomplished by use of equation (1). TA(max) = TJ(max) RJAPF(AV) RJAPR(AV) where TA(max) = Maximum allowable ambient temperature TJ(max) = Maximum allowable junction temperature (125C or the temperature at which thermal runaway occurs, whichever is lowest) PF(AV) = Average forward power dissipation PR(AV) = Average reverse power dissipation RJA = Junction-to-ambient thermal resistance The data of Figures 1, 2, and 3 is based upon dc conditions. For use in common rectifier circuits, Table 1 indicates suggested factors for an equivalent dc voltage to use for conservative design, that is: VR(equiv) = V(FM) F (4) * * (1) The factor F is derived by considering the properties of the various rectifier circuits and the reverse characteristics of Schottky diodes. EXAMPLE: Find TA(max) for 1N5821 operated in a 12-volt dc supply using a bridge circuit with capacitive filter such that IDC = 2.0 A (IF(AV) = 1.0 A), I(FM)/I(AV) = 10, Input Voltage = 10 V(rms), RJA = 40C/W. Step 1. Find VR(equiv). Read F = 0.65 from Table 1, R(equiv) = (1.41) (10) (0.65) = 9.2 V. Step 2. Find TR from Figure 2. Read TR = 108C @ VR = 9.2 V and RJA = 40C/W. Figures 1, 2, and 3 permit easier use of equation (1) by taking reverse power dissipation and thermal runaway into consideration. The figures solve for a reference temperature as determined by equation (2). TR = TJ(max) TA(max) = TR NV * RJAPR(AV) * RJAPF(AV) Step 3. Find PF(AV) from Figure 6. **Read PF(AV) = 0.85 W @ I (FM) I (AV) (2) Substituting equation (2) into equation (1) yields: (3) + 10 and IF(AV) + 1.0 A. * Inspection of equations (2) and (3) reveals that TR is the ambient temperature at which thermal runaway occurs or where TJ = 125C, when forward power is zero. The transition from one boundary condition to the other is evident on the curves of Figures 1, 2, and 3 as a difference in the rate of change of the slope in the vicinity of 115C. Step 4. Find TA(max) from equation (3). TA(max) = 108 (0.85) (40) = 74C. **Values given are for the 1N5821. Power is slightly lower for the 1N5820 because of its lower forward voltage, and higher for the 1N5822. Variations will be similar for the MBR-prefix devices, using PF(AV) from Figure 7. Table 1. Values for Factor F Circuit Load Sine Wave Square Wave *Note that VR(PK) Half Wave Resistive 0.5 0.75 Capacitive* 1.3 1.5 Full Wave, Bridge Resistive 0.5 0.75 Capacitive 0.65 0.75 Full Wave, Center Tapped* Resistive 1.0 1.5 Capacitive 1.3 1.5 [ 2.0 Vin(PK). Use line to center tap voltage for Vin. 2 Rectifier Device Data 1N5820 1N5821 1N5822 125 TR , REFERENCE TEMPERATURE (C) 20 125 10 8.0 TR , REFERENCE TEMPERATURE (C) 15 20 115 15 10 8.0 115 105 RqJA (C/W) = 70 95 50 40 85 75 2.0 3.0 4.0 5.0 7.0 10 15 20 VR, REVERSE VOLTAGE (VOLTS) 28 105 RqJA (C/W) = 70 95 50 40 85 75 3.0 4.0 5.0 7.0 10 15 20 30 VR, REVERSE VOLTAGE (VOLTS) 28 Figure 1. Maximum Reference Temperature 1N5820 Figure 2. Maximum Reference Temperature 1N5821 125 TR , REFERENCE TEMPERATURE (C) 20 R qJL , THERMAL RESISTANCE JUNCTION-TO-LEAD (C/W) 115 15 10 8.0 105 RqJA (C/W) = 70 50 85 40 28 75 4.0 5.0 7.0 10 15 20 30 40 40 35 30 25 20 15 10 5.0 0 0 1/8 2/8 3/8 4/8 5/8 6/8 7/8 1.0 VR, REVERSE VOLTAGE (VOLTS) L, LEAD LENGTH (INCHES) BOTH LEADS TO HEAT SINK, EQUAL LENGTH MAXIMUM TYPICAL 95 Figure 3. Maximum Reference Temperature 1N5822 Figure 4. Steady-State Thermal Resistance Rectifier Device Data 3 1N5820 1N5821 1N5822 1.0 r(t), TRANSIENT THERMAL RESISTANCE (NORMALIZED) 0.5 0.3 0.2 0.1 0.05 0.03 0.02 0.01 0.2 0.5 1.0 2.0 5.0 10 20 50 t, TIME (ms) The temperature of the lead should be measured using a thermocouple placed on the lead as close as possible to the tie point. The thermal mass connected to the tie point is normally large enough so that it will not significantly respond to heat surges generated in the diode as a result of pulsed operation once steady-state conditions are achieved. Using the measured value of TL, the junction temperature may be determined by: TJ = TL + DTJL LEAD LENGTH = 1/4 tp Ppk Ppk t1 TJL = Ppk * RJL [D + (1 - D) * r(t1 + tp) + r(tp) - r(t1)] where: TJL = the increase in junction temperature above the lead temperature. r(t) = normalized value of transient thermal resistance at time, t, i.e.: r(t1 + tp) = normalized value of transient thermal resistance at time t1 + tp, etc. 100 200 500 1.0 k 2.0 k 5.0 k 10 k 20 k DUTY CYCLE = tp/t1 PEAK POWER, Ppk, is peak of an TIME equivalent square power pulse. Figure 5. Thermal Response PF(AV) , AVERAGE POWER DISSIPATION (WATTS) 10 7.0 5.0 3.0 2.0 1.0 0.7 0.5 0.3 0.2 0.1 0.1 0.2 0.3 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 IF(AV), AVERAGE FORWARD CURRENT (AMP) NOTE 3 -- APPROXIMATE THERMAL CIRCUIT MODEL SINE WAVE I (FM) p (Resistive Load) I (AV) + RS(A) RL(A) RJ(A) RJ(K) PD RL(K) RS(K) TA(K) dc TA(A) TL(A) TC(A) TJ TC(K) TL(K) Capacitive Loads 5.0 10 20 SQUARE WAVE Use of the above model permits junction to lead thermal resistance for any mounting configuration to be found. For a given total lead length, lowest values occur when one side of the rectifier is brought as close as possible to the heat sink. Terms in the model signify: TA = Ambient Temperature TC = Case Temperature TL = Lead Temperature TJ = Junction Temperature RS = Thermal Resistance, Heat Sink to Ambient RL = Thermal Resistance, Lead to Heat Sink RJ = Thermal Resistance, Junction to Case PD = Total Power Dissipation = PF + PR PF = Forward Power Dissipation PR = Reverse Power Dissipation (Subscripts (A) and (K) refer to anode and cathode sides, respectively.) Values for thermal resistance components are: RL = 42C/W/in typically and 48C/W/in maximum RJ = 10C/W typically and 16C/W maximum The maximum lead temperature may be found as follows: TL = TJ(max) n TJL RJL * PD where n TJL TJ 125C Figure 6. Forward Power Dissipation 1N5820-22 * [ Mounting Method 1 Mounting Method 3 P.C. Board with 2-1/2 x 2-1/2 copper surface. L = 1/2 NOTE 2 -- MOUNTING DATA Data shown for thermal resistance junction-to-ambient (RJA) for the mountings shown is to be used as typical guideline values for preliminary engineering, or in case the tie point temperature cannot be measured. TYPICAL VALUES FOR RJA IN STILL AIR Mounting Method 1 2 3 Lead Length, L (in) 1/8 50 58 1/4 51 59 28 1/2 53 61 3/4 55 63 RJA C/W C/W C/W P.C. Board where available copper surface is small. 4 EEEEEEEEEE EE EE EE EEEEEEE EE EEEEEEE Mounting Method 2 L L VECTOR PUSH-IN TERMINALS T-28 L L BOARD GROUND PLANE Rectifier Device Data 1N5820 1N5821 1N5822 50 IFSM , PEAK HALF-WAVE CURRENT (AMP) 100 70 50 TL = 75C f = 60 Hz 30 20 30 20 TJ = 100C 10 i F, INSTANTANEOUS FORWARD CURRENT (AMP) 7.0 5.0 3.0 2.0 25C 1 CYCLE SURGE APPLIED AT RATED LOAD CONDITIONS 10 1.0 2.0 3.0 5.0 7.0 10 20 30 50 70 100 NUMBER OF CYCLES Figure 8. Maximum Non-Repetitive Surge Current 1.0 0.7 0.5 IR , REVERSE CURRENT (mA) 100 50 20 10 0.3 0.2 5.0 2.0 1.0 0.5 0.2 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 vF, INSTANTANEOUS FORWARD VOLTAGE (VOLTS) 0.05 0.02 0.01 0 4.0 8.0 12 16 20 24 28 32 36 40 VR, REVERSE VOLTAGE (VOLTS) 500 1N5820 300 25C 1N5820 1N5821 1N5822 75C 100C TJ = 125C 0.1 0.07 0.05 Figure 7. Typical Forward Voltage Figure 9. Typical Reverse Current C, CAPACITANCE (pF) NOTE 4 -- HIGH FREQUENCY OPERATION 200 TJ = 25C f = 1.0 MHz 100 70 0.5 0.7 1.0 2.0 3.0 5.0 7.0 10 1N5822 20 30 1N5821 Since current flow in a Schottky rectifier is the result of majority carrier conduction, it is not subject to junction diode forward and reverse recovery transients due to minority carrier injection and stored charge. Satisfactory circuit analysis work may be performed by using a model consisting of an ideal diode in parallel with a variable capacitance. (See Figure 11.) VR, REVERSE VOLTAGE (VOLTS) Figure 10. Typical Capacitance Rectifier Device Data 5 1N5820 1N5821 1N5822 PACKAGE DIMENSIONS B D 1 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. DIM A B D K INCHES MIN MAX 0.370 0.380 0.190 0.210 0.048 0.052 1.000 --- MILLIMETERS MIN MAX 9.40 9.65 4.83 5.33 1.22 1.32 25.40 --- K A STYLE 1: PIN 1. CATHODE 2. ANODE K 2 CASE 267-03 ISSUE C Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 303-675-2140 or 1-800-441-2447 MfaxTM: RMFAX0@email.sps.mot.com - TOUCHTONE 602-244-6609 INTERNET: http://Design-NET.com JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 81-3-3521-8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 6 1N5820/D Rectifier Device Data |
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