MZP4729A Series 3 Watt DO-41 Surmetict 30 Zener Voltage Regulators This is a complete series of 3 Watt Zener diodes with limits and excellent operating characteristics that reflect the superior capabilities of silicon-oxide passivated junctions. All this in an axial-lead, transfer-molded plastic package that offers protection in all common environmental conditions. http://onsemi.com Cathode Specification Features: Anode •Zener Voltage Range - 3.6 V to 30 V •ESD Rating of Class 3 (>16 KV) per Human Body Model •Surge Rating of 98 Watt @ 1 ms •Maximum Limits Guaranteed on up to Six Electrical Parameters •Package No Larger than the Conventional 1 Watt Package •These are Pb-Free Devices* Mechanical Characteristics: AXIAL LEAD CASE 59 PLASTIC CASE: Void free, transfer-molded, thermosetting plastic FINISH: All external surfaces are corrosion resistant and leads are readily solderable MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 260°C, 1/16″ from the case for 10 seconds POLARITY: Cathode indicated by polarity band MOUNTING POSITION: Any MARKING DIAGRAM MAXIMUM RATINGS Rating Symbol Value Unit Max. Steady State Power Dissipation @ TL = 75°C, Lead Length = 3/8″ Derate above 75°C PD 3 W 24 mW/°C Steady State Power Dissipation @ TA = 50°C Derate above 50°C PD 1 W 6.67 mW/°C -65 to +200 °C Operating and Storage Temperature Range TJ, Tstg Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. A MZP 47xxA YYWWG G A MZP47xxA YY WW G = Assembly Location = Device Number = Year = Work Week = Pb-Free Package (Note: Microdot may be in either location) ORDERING INFORMATION *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2007 July, 2007 - Rev. 4 1 Device Package Shipping† MZP47xxARLG Axial Lead (Pb-Free) 6000/Tape & Reel MZP47xxATAG Axial Lead (Pb-Free) 4000/Ammo Pack †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Publication Order Number: MZP4729A/D MZP4729A Series ELECTRICAL CHARACTERISTICS (TA = 25°C unless I otherwise noted, VF = 1.5 V Max @ IF = 200 mA for all types) Symbol IF Parameter VZ Reverse Zener Voltage @ IZT IZT Reverse Current ZZT Maximum Zener Impedance @ IZT IZK Reverse Current ZZK Maximum Zener Impedance @ IZK IR Reverse Leakage Current @ VR VR Breakdown Voltage IF Forward Current VF Forward Voltage @ IF IR Surge Current @ TA = 25°C VZ VR V IR VF IZT Zener Voltage Regulator ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted, VF = 1.5 V Max @ IF = 200 mA for all types) Zener Voltage (Note 2) Device† (Note 1) VZ (Volts) Zener Impedance (Note 3) @ IZT ZZT @ IZT Leakage Current ZZK @ IZK IR @ VR IR (Note 4) Device Marking Min Nom Max mA W W mA mA Max Volts mA MZP4729A, G MZP4735A, G MZP4729A MZP4735A 3.42 5.89 3.6 6.2 3.78 6.51 69 41 10 2 400 700 1 1 100 10 1 3 1260 730 MZP4746A, G MZP4749A, G MZP4750A, G MZP4746A MZP4749A MZP4750A 17.10 22.80 25.65 18 24 27 18.90 25.20 28.35 14 10.5 9.5 20 25 35 750 750 750 0.25 0.25 0.25 5 5 5 13.7 18.2 20.6 250 190 170 1. TOLERANCE AND TYPE NUMBER DESIGNATION The type numbers listed have a standard tolerance on the nominal zener voltage of ±5%. 2. ZENER VOLTAGE (VZ) MEASUREMENT ON Semiconductor guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (TL) at 30°C ±1°C, 3/8″ from the diode body. 3. ZENER IMPEDANCE (ZZ) DERIVATION The zener impedance is derived from 60 seconds AC voltage, which results when an AC current having an rms value equal to 10% of the DC zener current (IZT or IZK) is superimposed on IZT or IZK. 4. SURGE CURRENT (IR) NON-REPETITIVE The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current, IZT, per JEDEC standards. However, actual device capability is as described in Figure 3 of the General Data sheet for Surmetic 30s. †The “G'' suffix indicates Pb-Free package. http://onsemi.com 2 MZP4729A Series PD, MAXIMUM STEADY STATE POWER DISSIPATION (WATTS) 5 L = LEAD LENGTH TO HEAT SINK L = 1/8″ 4 L = 3/8″ 3 2 L = 1″ 1 0 0 20 40 60 80 100 120 140 160 TL, LEAD TEMPERATURE (°C) 180 200 Figure 1. Power Temperature Derating Curve θJL(t, D) TRANSIENT THERMAL RESISTANCE JUNCTION‐TO‐LEAD ( °C/W) 30 20 10 7 5 3 2 1 0.7 0.5 D =0.5 0.2 0.1 t2 DUTY CYCLE, D =t1/t2 0.02 0.01 NOTE: BELOW 0.1 SECOND, THERMAL RESPONSE CURVE IS APPLICABLE TO ANY LEAD LENGTH (L). D=0 0.3 0.0001 0.0002 t1 PPK 0.05 0.0005 0.001 0.002 0.005 0.01 0.02 0.05 t, TIME (SECONDS) 0.1 0.2 SINGLE PULSE DTJL = qJL (t)PPK REPETITIVE PULSES DTJL = qJL (t,D)PPK 0.5 1 2 5 10 Figure 2. Typical Thermal Response L, Lead Length = 3/8 Inch IR , REVERSE LEAKAGE (μ Adc) @ VR AS SPECIFIED IN ELEC. CHAR. TABLE PPK , PEAK SURGE POWER (WATTS) 1K RECTANGULAR NONREPETITIVE WAVEFORM TJ=25°C PRIOR TO INITIAL PULSE 500 300 200 100 50 30 20 10 0.1 0.2 0.3 0.5 1 2 3 5 10 PW, PULSE WIDTH (ms) 20 30 50 100 3 2 1 0.5 TA = 125°C 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 0.0005 0.0003 TA = 125°C 1 Figure 3. Maximum Surge Power 2 5 10 20 50 100 NOMINAL VZ (VOLTS) 200 400 Figure 4. Typical Reverse Leakage http://onsemi.com 3 1000 MZP4729A Series APPLICATION NOTE DTJL is the increase in junction temperature above the lead temperature and may be found from Figure 2 for a train of power pulses (L = 3/8 inch) or from Figure 10 for dc power. Since the actual voltage available from a given zener diode is temperature dependent, it is necessary to determine junction temperature under any set of operating conditions in order to calculate its value. The following procedure is recommended: Lead Temperature, TL, should be determined from: DTJL = qJL PD For worst‐case design, using expected limits of IZ, limits of PD and the extremes of TJ (DTJ) may be estimated. Changes in voltage, VZ, can then be found from: TL = qLA PD + TA qLA is the lead‐to‐ambient thermal resistance (°C/W) and PD is the power dissipation. The value for qLA will vary and depends on the device mounting method. qLA is generally 30-40°C/W for the various clips and tie points in common use and for printed circuit board wiring. The temperature of the lead can also 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: DV = qVZ DTJ qVZ, the zener voltage temperature coefficient, is found from Figures 5 and 6. Under high power‐pulse operation, the zener voltage will vary with time and may also be affected significantly by the zener resistance. For best regulation, keep current excursions as low as possible. Data of Figure 2 should not be used to compute surge capability. Surge limitations are given in Figure 3. They are lower than would be expected by considering only junction temperature, as current crowding effects cause temperatures to be extremely high in small spots resulting in device degradation should the limits of Figure 3 be exceeded. TJ = TL + DTJL TEMPERATURE COEFFICIENT RANGES 10 8 6 4 RANGE 2 0 -2 -4 3 4 5 6 7 8 9 10 VZ, ZENER VOLTAGE @ IZT (VOLTS) 11 12 θ VZ, TEMPERATURE COEFFICIENT (mV/ °C) @ I ZT θ VZ, TEMPERATURE COEFFICIENT (mV/ °C) @ I ZT (90% of the Units are in the Ranges Indicated) 1000 500 200 100 50 20 10 10 Figure 5. Units to 12 Volts 20 50 100 200 400 VZ, ZENER VOLTAGE @ IZT (VOLTS) Figure 6. Units 10 to 400 Volts http://onsemi.com 4 1000 MZP4729A Series ZENER VOLTAGE versus ZENER CURRENT 100 50 30 20 50 30 20 IZ , ZENER CURRENT (mA) 100 10 5 3 2 1 0.5 0.3 0.2 0 1 2 3 4 5 6 7 VZ, ZENER VOLTAGE (VOLTS) 8 9 10 5 3 2 1 0.5 0.3 0.2 0.1 10 0 10 20 Figure 7. VZ = 3.3 to 10 Volts 30 40 50 60 70 VZ, ZENER VOLTAGE (VOLTS) 5 2 1 0.5 0.2 0.1 100 150 200 250 300 350 VZ, ZENER VOLTAGE (VOLTS) 400 Figure 9. VZ = 100 to 400 Volts 80 70 60 50 L 40 L 30 TL 20 PRIMARY PATH OF CONDUCTION IS THROUGH THE CATHODE LEAD 10 0 0 1/8 80 Figure 8. VZ = 12 to 82 Volts 10 IZ , ZENER CURRENT (mA) 0.1 θJL, JUNCTION‐TO‐LEAD THERMAL RESISTANCE (° C/W) IZ, ZENER CURRENT (mA) (Figures 7, 8 and 9) 1/4 3/8 1/2 5/8 3/4 L, LEAD LENGTH TO HEAT SINK (INCH) 7/8 Figure 10. Typical Thermal Resistance http://onsemi.com 5 1 90 100 MZP4729A Series PACKAGE DIMENSIONS AXIAL LEAD CASE 59-10 ISSUE U B K NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. ALL RULES AND NOTES ASSOCIATED WITH JEDEC DO-41 OUTLINE SHALL APPLY 4. POLARITY DENOTED BY CATHODE BAND. 5. LEAD DIAMETER NOT CONTROLLED WITHIN F DIMENSION. D F A POLARITY INDICATOR OPTIONAL AS NEEDED (SEE STYLES) DIM A B D F K F K INCHES MIN MAX 0.161 0.205 0.079 0.106 0.028 0.034 --- 0.050 1.000 --- MILLIMETERS MIN MAX 4.10 5.20 2.00 2.70 0.71 0.86 --1.27 25.40 --- SURMETIC is a trademark of Semiconductor Components Industries, LLC (SCILLC). ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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