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| MOTOROLA SEMICONDUCTOR TECHNICAL DATA 500 mW DO-35 Glass Zener Voltage Regulator Diodes GENERAL DATA APPLICABLE TO ALL SERIES IN THIS GROUP 1N957B SERIES 500 mW DO-35 GLASS GLASS ZENER DIODES 500 MILLIWATTS 1.8-200 VOLTS 500 Milliwatt Hermetically Sealed Glass Silicon Zener Diodes Specification Features: * Complete Voltage Range -- 1.8 to 200 Volts * DO-204AH Package -- Smaller than Conventional DO-204AA Package * Double Slug Type Construction * Metallurgically Bonded Construction Mechanical Characteristics: CASE: Double slug type, hermetically sealed glass MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 230C, 1/16 from case for 10 seconds FINISH: All external surfaces are corrosion resistant with readily solderable leads POLARITY: Cathode indicated by color band. When operated in zener mode, cathode will be positive with respect to anode MOUNTING POSITION: Any WAFER FAB LOCATION: Phoenix, Arizona ASSEMBLY/TEST LOCATION: Seoul, Korea MAXIMUM RATINGS (Motorola Devices)* Rating DC Power Dissipation and TL 75C Lead Length = 3/8 Derate above TL = 75C Operating and Storage Temperature Range * Some part number series have lower JEDEC registered ratings. CASE 299 DO-204AH GLASS Symbol PD Value 500 4 Unit mW mW/C C TJ, Tstg - 65 to +200 PD , MAXIMUM POWER DISSIPATION (WATTS) 0.7 0.6 0.5 0.4 3/8" 3/8" HEAT SINKS 0.3 0.2 0.1 0 0 20 40 60 80 100 120 140 160 180 200 TL, LEAD TEMPERATURE (C) Figure 1. Steady State Power Derating Motorola TVS/Zener Device Data 500 mW DO-35 Glass Data Sheet 6-1 GENERAL DATA -- 500 mW DO-35 GLASS ELECTRICAL CHARACTERISTICS (TA = 25C, VF = 1.5 V Max at 200 mA for all types) Nominal Zener Voltage VZ (Note 2) Volts 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 51 Test Current IZT mA 18.5 16.5 15 14 12.5 11.5 10.5 9.5 8.5 7.8 7 6.2 2.5 Maximum Zener Impedance (Note 3) ZZT @ IZT ZZK @ IZK Ohms Ohms 4.5 5.5 6.5 7.5 8.5 9.5 11.5 13 16 17 21 25 125 700 700 700 700 700 700 700 700 700 700 750 750 1500 IZK mA 1 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 Maximum DC Zener Current IZM (Note 4) mA 47 42 38 35 32 28 26 24 21 19 17 15 5.9 Maximum Reverse Current IR Maximum A 150 75 50 25 10 5 5 5 5 5 5 5 5 Test Voltage Vdc VR 5.2 5.7 6.2 6.9 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 38.8 Type Number (Note 1) 1N957B 1N958B 1N959B 1N960B 1N961B 1N962B 1N963B 1N964B 1N965B 1N966B 1N967B 1N968B 1N978B NOTE 1. TOLERANCE AND VOLTAGE DESIGNATION Tolerance Designation The type numbers shown have tolerance designations as follows: 1N4370A series: 5% units, C for 2%, D for 1%. 1N746A series: 5% units, C for 2%, D for 1%. 1N957B series: 5% units, C for 2%, D for 1%. NOTE 2. ZENER VOLTAGE (VZ) MEASUREMENT Nominal zener voltage is measured with the device junction in thermal equilibrium at the lead temperature of 30C 1C and 3/8 lead length. NOTE 3. ZENER IMPEDANCE (ZZ) DERIVATION ZZT and ZZK are measured by dividing the ac voltage drop across the device by the ac current applied. The specified limits are for IZ(ac) = 0.1 IZ(dc) with the ac frequency = 60 Hz. NOTE 4. MAXIMUM ZENER CURRENT RATINGS (IZM) Values shown are based on the JEDEC rating of 400 mW. Where the actual zener voltage (VZ) is known at the operating point, the maximum zener current may be increased and is limited by the derating curve. 500 mW DO-35 Glass Data Sheet 6-2 Motorola TVS/Zener Device Data GENERAL DATA -- 500 mW DO-35 GLASS APPLICATION NOTE -- ZENER VOLTAGE 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: TL = LAPD + TA. LA is the lead-to-ambient thermal resistance (C/W) and PD is the power dissipation. The value for LA will vary and depends on the device mounting method. LA is generally 30 to 40C/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: TJ = TL + TJL. TJL is the increase in junction temperature above the lead temperature and may be found from Figure 2 for dc power: TJL = JLPD. For worst-case design, using expected limits of IZ, limits of PD and the extremes of TJ(TJ) may be estimated. Changes in voltage, VZ, can then be found from: V = VZTJ. VZ, the zener voltage temperature coefficient, is found from Figures 4 and 5. 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. Surge limitations are given in Figure 7. 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 7 be exceeded. JL , JUNCTION-TO-LEAD THERMAL RESISTANCE (C/W) 500 400 L L 300 2.4-60 V 200 100 0 62-200 V 0 0.2 0.4 0.6 0.8 1 L, LEAD LENGTH TO HEAT SINK (INCH) Figure 2. Typical Thermal Resistance 1000 7000 5000 2000 1000 700 500 200 100 70 50 20 10 7 5 2 1 0.7 0.5 0.2 0.1 0.07 0.05 0.02 0.01 0.007 0.005 0.002 0.001 3 4 5 6 7 8 9 10 11 12 13 14 15 +25C TYPICAL LEAKAGE CURRENT AT 80% OF NOMINAL BREAKDOWN VOLTAGE I R , LEAKAGE CURRENT ( A) +125C VZ, NOMINAL ZENER VOLTAGE (VOLTS) Figure 3. Typical Leakage Current Motorola TVS/Zener Device Data 500 mW DO-35 Glass Data Sheet 6-3 GENERAL DATA -- 500 mW DO-35 GLASS TEMPERATURE COEFFICIENTS (-55C to +150C temperature range; 90% of the units are in the ranges indicated.) VZ , TEMPERATURE COEFFICIENT (mV/ C) +12 +10 +8 +6 +4 +2 RANGE 0 -2 -4 2 3 4 5 6 7 8 9 VZ, ZENER VOLTAGE (VOLTS) 10 11 12 VZ @ IZT (NOTE 2) VZ , TEMPERATURE COEFFICIENT (mV/ C) 100 70 50 30 20 10 7 5 3 2 1 10 RANGE VZ @ IZ (NOTE 2) 20 30 50 VZ, ZENER VOLTAGE (VOLTS) 70 100 Figure 4a. Range for Units to 12 Volts Figure 4b. Range for Units 12 to 100 Volts VZ , TEMPERATURE COEFFICIENT (mV/ C) VZ , TEMPERATURE COEFFICIENT (mV/ C) 200 180 160 +6 +4 +2 20 mA 0 0.01 mA -2 -4 3 4 1 mA NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS NOTE: CHANGES IN ZENER CURRENT DO NOT NOTE: AFFECT TEMPERATURE COEFFICIENTS 5 6 7 8 VZ @ IZ TA = 25C 140 VZ @ IZT (NOTE 2) 120 100 120 130 140 150 160 170 180 190 200 VZ, ZENER VOLTAGE (VOLTS) VZ, ZENER VOLTAGE (VOLTS) Figure 4c. Range for Units 120 to 200 Volts Figure 5. Effect of Zener Current 1000 500 0 V BIAS 200 C, CAPACITANCE (pF) 100 50 20 10 5 2 1 1 2 5 10 20 50% OF VZ BIAS TA = 25C 100 70 50 C, CAPACITANCE (pF) 30 20 TA = 25C 0 BIAS 1 V BIAS 1 VOLT BIAS 10 7 5 3 2 1 50% OF VZ BIAS 50 100 120 140 160 180 190 200 220 VZ, ZENER VOLTAGE (VOLTS) VZ, ZENER VOLTAGE (VOLTS) Figure 6a. Typical Capacitance 2.4-100 Volts Figure 6b. Typical Capacitance 120-200 Volts 500 mW DO-35 Glass Data Sheet 6-4 Motorola TVS/Zener Device Data GENERAL DATA -- 500 mW DO-35 GLASS 100 70 50 30 20 10 7 5 3 2 1 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000 10% DUTY CYCLE 5% DUTY CYCLE Ppk , PEAK SURGE POWER (WATTS) 11 V-91 V NONREPETITIVE 1.8 V-10 V NONREPETITIVE RECTANGULAR WAVEFORM TJ = 25C PRIOR TO INITIAL PULSE 20% DUTY CYCLE PW, PULSE WIDTH (ms) Figure 7a. Maximum Surge Power 1.8-91 Volts Ppk , PEAK SURGE POWER (WATTS) ZZ , DYNAMIC IMPEDANCE (OHMS) 1000 700 500 300 200 100 70 50 30 20 10 7 5 3 2 1 0.01 1000 500 RECTANGULAR WAVEFORM, TJ = 25C 200 100 50 20 10 5 2 1 0.1 1 10 100 1000 0.1 0.2 0.5 VZ = 2.7 V 47 V 27 V TJ = 25C iZ(rms) = 0.1 IZ(dc) f = 60 Hz 100-200 VOLTS NONREPETITIVE 6.2 V 1 2 5 10 20 50 100 PW, PULSE WIDTH (ms) IZ, ZENER CURRENT (mA) Figure 7b. Maximum Surge Power DO-204AH 100-200 Volts Figure 8. Effect of Zener Current on Zener Impedance ZZ , DYNAMIC IMPEDANCE (OHMS) 1000 700 500 200 100 70 50 20 10 7 5 2 1 1 2 3 5 7 10 IZ = 1 mA 5 mA 20 mA I F , FORWARD CURRENT (mA) TJ = 25C iZ(rms) = 0.1 IZ(dc) f = 60 Hz 1000 500 200 100 50 20 10 5 150C 2 1 75C MAXIMUM MINIMUM 25C 0C 20 30 50 70 100 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 VZ, ZENER VOLTAGE (VOLTS) VF, FORWARD VOLTAGE (VOLTS) Figure 9. Effect of Zener Voltage on Zener Impedance Figure 10. Typical Forward Characteristics Motorola TVS/Zener Device Data 500 mW DO-35 Glass Data Sheet 6-5 GENERAL DATA -- 500 mW DO-35 GLASS 20 10 TA = 25 I Z , ZENER CURRENT (mA) 1 0.1 0.01 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 VZ, ZENER VOLTAGE (VOLTS) Figure 11. Zener Voltage versus Zener Current -- VZ = 1 thru 16 Volts 10 TA = 25 I Z , ZENER CURRENT (mA) 1 0.1 0.01 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 VZ, ZENER VOLTAGE (VOLTS) Figure 12. Zener Voltage versus Zener Current -- VZ = 15 thru 30 Volts 500 mW DO-35 Glass Data Sheet 6-6 Motorola TVS/Zener Device Data GENERAL DATA -- 500 mW DO-35 GLASS 10 TA = 25 I Z , ZENER CURRENT (mA) 1 0.1 0.01 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 VZ, ZENER VOLTAGE (VOLTS) Figure 13. Zener Voltage versus Zener Current -- VZ = 30 thru 105 Volts 10 I Z , ZENER CURRENT (mA) 1 0.1 0.01 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 VZ, ZENER VOLTAGE (VOLTS) Figure 14. Zener Voltage versus Zener Current -- VZ = 110 thru 220 Volts Motorola TVS/Zener Device Data 500 mW DO-35 Glass Data Sheet 6-7 GENERAL DATA -- 500 mW DO-35 GLASS Zener Voltage Regulator Diodes -- Axial Leaded 500 mW DO-35 Glass B D F K NOTES: 1. PACKAGE CONTOUR OPTIONAL WITHIN A AND B HEAT SLUGS, IF ANY, SHALL BE INCLUDED WITHIN THIS CYLINDER, BUT NOT SUBJECT TO THE MINIMUM LIMIT OF B. 2. LEAD DIAMETER NOT CONTROLLED IN ZONE F TO ALLOW FOR FLASH, LEAD FINISH BUILDUP AND MINOR IRREGULARITIES OTHER THAN HEAT SLUGS. 3. POLARITY DENOTED BY CATHODE BAND. 4. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. MILLIMETERS MIN MAX 3.05 5.08 1.52 2.29 0.46 0.56 -- 1.27 25.40 38.10 INCHES MIN MAX 0.120 0.200 0.060 0.090 0.018 0.022 -- 0.050 1.000 1.500 A DIM A B D F K K F All JEDEC dimensions and notes apply. CASE 299-02 DO-204AH GLASS (Refer to Section 10 for Surface Mount, Thermal Data and Footprint Information.) MULTIPLE PACKAGE QUANTITY (MPQ) REQUIREMENTS Package Option Tape and Reel Tape and Ammo Type No. Suffix RL, RL2(1) TA, TA2(1) MPQ (Units) 5K 5K NOTES: 1. The "2" suffix refers to 26 mm tape spacing. NOTES: 2. Radial Tape and Reel may be available. Please contact your Motorola NOTES: 2. representative. Refer to Section 10 for more information on Packaging Specifications. 500 mW DO-35 Glass Data Sheet 6-8 Motorola TVS/Zener Device Data |
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