TAK CHEONG Licensed by ON Semiconductor, A trademark of semiconductor Components Industries, LLC for Zener Technology and Products. 500 mW DO-35 Hermetically Sealed Glass Zener Voltage Regulators Maximum Ratings (Note 1) Rating Symbol Value Units Maximum Steady State Power Dissipation @TL75, Lead Length = 3/8" PD 500 mW 4.0 mW/ -65 to +200 C Derate Above 75 Operating and Storage Temperature Range TJ, Tstg AXIAL LEAD DO35 Note 1: Some part number series have lower JEDEC registered ratings. Specification Features: Zener Voltage Range = 2.4V to 91V ESD Rating of Clas 3 (>6 KV) per Human Body Model DO-35 Package (DO-204AH) Double Slug Type Construction Metallurgical Bonded Construction Cathode Anode Specification Features: Case : Double slug type, hermetically sealed glass Finish : All external surfaces are corrosion resistant and leads are readily solderable Polarity : Cathode indicated by polarity band Mounting: Any L 55C xxx Maximum Lead Temperature for Soldering Purposes 230, 1/16" from the case for 10 seconds L 79Cxxx = Logo = BZX79Cxxx Device Code Ordering Information Device Package Quantity BZX55Cxxx Axial Lead 3000 Units / Box BZX55CxxxRL Axial Lead 5000 Units / Tape & Reel BZX55CxxxRL2* Axial Lead 5000 Units / Tape & Reel BZX55CxxxRR1 ! Lead Form 3000 Units / Radial Tape & Reel BZX55CxxxRR2 i Lead Form 3000 Units / Radial Tape & Reel BZX55CxxxTA Axial Lead 5000 Units / Tape & Ammo BZX55CxxxTA2* Axial Lead 5000 Units / Tape & Ammo BZX55CxxxRA1 ! Axial Lead 3000 Units / Radial Tape & Ammo BZX55CxxxRA2 i Axial Lead 3000 Units / Radial Tape & Ammo * The "2" suffix refer to 26mm tape spacing. ! "1": Polarity band up with cathode lead off first. i "2": Polarity band down with cathode lead off first. Devices listed in bold italic are Tak Cheong Preferred devices. Preferred devices are recommended choices for future use and best overall value. December 2005 / B http://takcheong.com 1 BZX55C2V4 through BZX55C91 Series (R) BZX55C2V4 through BZX55C91 Series ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted. VF = 1.3 V Max @ IF = 100mA for all types) Symbol Parameter VZ Reverse Zener Voltage @ IZT IZT Reverse Zener Current ZZT Maximum Zener Impedance @ IZT IZM Maximum DC Zener Current IR Reverse Leakage Current @ VR VR Reverse Voltage IF Forward Current VF Forward Voltage @ IF ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted, VF = 1.3 V Max @ IF = 100mA for all types) VZT @ IZT Max Zener Impedance (Volts) (Note 4) (Note 2.) Max Reverse Leakage Current IR at VR IZM Tamb 125C VR (Note 3.) ZZT @ IZT IZT Device Device Marking Tamb 25C Min Max ) ( (mA) A) ( A) ( (Volts) (mA) BZX55C2V4 55C2V4 2.28 2.56 85 5 50 100 1 155 BZX55C2V7 55C2V7 2.5 2.9 85 5 10 50 1 135 BZX55C3V0 55C3V0 2.8 3.2 85 5 4 40 1 125 BZX55C3V3 55C3V3 3.1 3.5 85 5 2 40 1 115 BZX55C3V6 55C3V6 3.4 3.8 85 5 2 40 1 105 BZX55C3V9 55C3V9 3.7 4.1 85 5 2 40 1 95 BZX55C4V3 55C4V3 4 4.6 75 5 1 20 1 90 BZX55C4V7 55C4V7 4.4 5 60 5 0.5 10 1 85 BZX55C5V1 55C5V1 4.8 5.4 35 5 0.1 c 1 80 BZX55C5V6 55C5V6 5.2 6 25 5 0.1 2 1 70 BZX55C6V2 55C6V2 5.8 6.6 10 5 0.1 2 2 64 BZX55C6V8 55C6V8 6.4 7.2 8 5 0.1 2 3 58 BZX55C7V5 55C7V5 7 7.9 7 5 0.1 2 5 53 BZX55C8V2 55C8V2 7.7 8.7 7 5 0.1 2 6 47 BZX55C9V1 55C9V1 8.5 9.6 10 5 0.1 2 7 43 BZX55C10 55C10 9.4 10.6 15 5 0.1 2 7.5 40 BZX55C11 55C11 10.4 11.6 20 5 0.1 2 8.5 36 BZX55C12 55C12 11.4 12.7 20 5 0.1 2 9 32 BZX55C13 55C13 12.4 14.1 26 5 0.1 2 10 29 BZX55C15 55C15 13.8 15.6 30 5 0.1 2 11 27 2. TOLERANCE AND VOLTAGE DESIGNATION (VZt) Tolerance designation - the type numbers listed have zener voltage min/max limits as shown. Device tolerance of 2% are Indicated by a "B" instead of a "C". Zener voltage is measured with the device junction thermal equilibrium at the temperature of 30C 1C and 3/8" lead length. 3. MAXIMUM ZENER CURRENT RATINGS (IZM) This data was calculated using nominal voltages. The maximum current handling capability on a worst case basis is limited by the actual zener voltage at the operation point and the power derating curve. 4. 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 AC frequency = 60Hz. http://www.takcheong.com 2 BZX55C2V4 through BZX55C91 Series ELECTRICAL CHARACTERISTICS (TA = 25C unless otherwise noted, VF = 1.3 V Max @ IF = 100mA for all types) VZT @ IZT Max Zener Impedance (Volts) (Note 7) (Note 5.) ZZT @ IZT Max Reverse Leakage Current IR at VR IZM IZT Tamb 25C Tamb 125C VR (Note 6.) Device Device Marking Min Max ) ( (mA) A) ( A) ( (Volts) (mA) BZX55C16 55C16 15.3 17.1 40 5 0.1 2 12 24 BZX55C18 55C18 16.8 19.1 50 5 0.1 2 14 21 BZX55C20 55C20 18.8 21.1 55 5 0.1 2 15 20 BZX55C22 55C22 20.8 23.3 55 5 0.1 2 17 18 BZX55C24 55C24 22.8 25.6 80 5 0.1 2 18 16 BZX55C27 55C27 25.1 28.9 80 5 0.1 2 20 14 BZX55C30 55C30 28 32 80 5 0.1 2 22 13 BZX55C33 55C33 31 35 80 5 0.1 2 24 12 BZX55C36 55C36 34 38 80 5 0.1 2 27 11 BZX55C39 55C39 37 41 90 2.5 0.1 5 28 10 BZX55C43 55C43 40 46 90 2.5 0.1 5 32 9.2 BZX55C47 55C47 44 50 110 2.5 0.1 5 35 8.5 BZX55C51 55C51 48 54 125 2.5 0.1 10 38 7.8 BZX55C56 55C56 52 60 135 2.5 0.1 10 42 7 BZX55C62 55C62 58 66 150 2.5 0.1 10 47 6.4 BZX55C68 55C68 64 72 160 2.5 0.1 10 51 5.9 BZX55C75 55C75 70 80 170 2.5 0.1 10 56 5.3 BZX55C82 55C82 77 87 200 2.5 0.1 10 62 4.8 BZX55C91 55C91 85 96 250 1 0.1 10 69 4.3 5. TOLERANCE AND VOLTAGE DESIGNATION (VZt) Tolerance designation - the type numbers listed have zener voltage min/max limits as shown. Device tolerance of 2% are Indicated by a "B" instead of a "C". Zener voltage is measured with the device junction thermal equilibrium at the temperature of 30C 1C and 3/8" lead length. 6. MAXIMUM ZENER CURRENT RATINGS (IZM) This data was calculated using nominal voltages. The maximum current handling capability on a worst case basis is limited by the actual zener voltage at the operation point and the power derating curve. 7. 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 AC frequency = 60Hz. http://www.takcheong.com 3 BZX55C2V4 through BZX55C91 Series 0.7 HEAT SINKS P D , MAXIMUM STEADY STATE POWER DISSIPATION (WATTS) 0.6 0.5 0.4 3/8" 3/8" 0.3 0.2 0.1 0 0 20 40 60 80 100 120 140 160 T L , LEAD TEMPERATURE (C) Figure 1. Steady State Power Derating http://www.takcheong.com 4 180 200 BZX55C2V4 through BZX55C91 Series 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: JL, JUNCTION TO LEAD THERMAL RESISTANCE ( C/W) APPLICATION NOTE - ZENER VOLTAGE L 2.4-60 V 200 62-200 V 100 0 0 0.2 0.4 1000 7000 5000 0.6 0.8 1 TYPICAL LEAKAGE CURRENT AT 80% OF NOMINAL BREAKDOWN VOLTAGE 2000 1000 700 500 200 TJL = JLPD. 100 70 50 I R , LEAKAGE CURRENT ( A) 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. L 300 Figure 2. Typical Thermal Resistance TJL is the increase in junction temperature above the lead temperature and may be found from Figure 2 for dc power: V = VZTJ. 400 L , LEAD LENGTH TO HEAT SINK (INCH) TJ = TL + TJL. 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: 500 20 10 7 5 2 1 0.7 0.5 +125C 0.2 0.1 0.07 0.05 0.02 0.01 0.007 0.005 +25C 0.002 0.001 3 4 5 6 7 8 9 10 11 12 VZ , NOMINAL ZENER VOLTAGE (VOLTS) Figure 3. Typical Leakage Current http://www.takcheong.com 5 13 14 15 BZX55C2V4 through BZX55C91 Series TEMPERATURE COEFFICIENTS TEMPERATURE COEFFICIENT (mV/ C) +12 +10 +8 +6 +4 +2 RANGE VZ @ IZT (NOTE 2) 0 -2 VZ , VZ , TEMPERA TURE COEFFICIENT (mV/ C) (-55 C to +150 C temperature range; 90% of the units are in the ranges indicated.) -4 2 4 3 5 6 7 8 10 9 11 100 70 50 30 20 5 3 2 1 10 12 20 TEMPERATURE COEFFICIENT (mV/C) 160 140 VZ @ IZT (NOTE 2) VZ , TEMPERA TURE COEFFICIENT (mV/C) VZ , 180 100 140 150 160 170 70 100 180 190 +6 VZ @ IZ TA= 25 C +4 +2 20mA 0 0.01mA 1mA -2 NOTE: BELOW 3 VOLTS AND ABOVE 8 VOL TS NOTE: CHANGES IN ZENER CURRENT DO NOT NOTE: AFFECT TEMPERATURE COEFFICIENTS -4 3 200 6 5 4 8 7 V Z , ZENER VOLTAGE (VOLTS) V Z , ZENER VOLTAGE (VOLTS) Figure 4c. Range for Units 120 to 200 Volts Figure 5. Effect of Zener Current 1000 100 TA = 25 C 70 500 T= 25 C 50 0V BIAS 0 BIAS C, CAP ACIT ANCE (pF) 200 C, CAP ACIT ANCE (pF) 50 Figure 4b. Range for Units 12 to 100 Volts 200 130 30 V Z , ZENER VOLTAGE (VOLTS) Figure 4a. Range for Units to 12 Volts 120 (NOTE 2) 7 V Z , ZENER VOLTAGE (VOLTS) 120 VZ @ IZ RANGE 10 100 1V BIAS 50 20 10 50% OF V Z BIAS 5 30 20 1 VOLT BIAS 10 7 50% OF V BIAS 5 3 2 2 1 1 1 2 5 10 20 50 100 120 140 Figure 6a. Typical Capacitance 2.4-100 Volts 160 180 190 200 V Z, ZENER VOLTAGE (VOLTS) V Z, ZENER VOLTAGE (VOLTS) Figure 6b. Typical Capacitance 120-200 Volts http://www.takcheong.com 6 220 BZX55C2V4 through BZX55C91 Series Ppk , PEAK SURGE POWER (WATTS) 100 70 50 RECT ANGULAR WAVEFORM T J = 25C PRIOR TO INITIAL PULSE 11V-91V NONREPETITIVE 30 5% DUTY CYCLE 1.8V-10V NONREPETITIVE 20 10 10% DUTY CYCLE 7 5 20% DUTY CYCLE 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 PW, PULSE WIDTH (ms) Figure 7a. Maximum Surge Power 1.8-91 Volts 1000 RECT ANGULAR WAVEFORM, TJ = 25 C 300 200 100 70 50 100-200 VOLTS NONREPETITIVE 30 20 10 7 5 3 2 1 0.01 T J = 25C iZ (rms) = 0.1 Iz(dc) VZ = 2.7V f = 60 Hz 200 47V 100 27V 50 20 6.2V 10 5 2 1 0.1 1 10 100 0.1 1000 0.2 0.5 1 2 5 10 20 PW, PULSE WIDTH (ms) IZ , ZENER CURRENT (mA) Figure 7b. Maximum Surge Power DO-35 100-200Volts Figure 8. Effect of Zener Current on Zener Impedance 1000 700 500 Z Z , DYNAMIC IMPEDANCE (OHMS) Z Z , DYNAMIC IMPEDANCE (OHMS) 500 TJ = 25C 200 100 70 50 5mA 20 20mA 100 MAXIMUM 500 f = 60Hz IZ = 1mA 50 1000 iZ (rms) = 0.1 IZ (dc) I F , FOR WARD CURRENT (mA) Ppk , PEAK SURGE POWER (WATTS) 1000 700 500 10 7 5 2 MINIMUM 200 100 50 75 C 20 10 25 C 5 150 C 0 C 2 1 1 1 2 3 5 7 10 20 30 50 70 100 0.4 0.5 V Z , ZENER VOLTAGE (VOLTS) 0.6 0.7 0.8 0.9 1 V F , FOR WARD VOLTAGE (VOLTS) Figure 9. Effect of Zener Voltage on Zener Impedance Figure 10. Typical Forward Characteristics http://www.takcheong.com 7 1.1 BZX55C2V4 through BZX55C91 Series 20 10 I Z , ZENER CURRENT (mA) TA = 25C 1 0.1 0.01 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 29 30 V Z , ZENER VOLTAGE (VOLTS) Figure 1 1. Zener Voltage versus Zener Current - VZ = 1 thru 16 Volts 10 I Z , ZENER CURRENT (mA) TA = 25C 1 0.1 0.01 15 16 17 18 19 20 21 22 23 24 25 26 27 V Z , ZENER VOLTAGE (VOLTS) Figure 12. Zener Voltage versus Zener Current - VZ = 15 thru 30 Volts http://www.takcheong.com 8 28 BZX55C2V4 through BZX55C91 Series I Z , ZENER CURRENT (mA) 10 TA = 25 1 0.1 0.01 30 35 40 45 50 55 60 65 70 75 80 85 95 100 105 240 250 260 90 V Z , ZENER VOLTAGE (VOLTS) Figure 13. Zener Voltage versus Zener Current - VZ = 30 thru 105 Volts I Z , ZENER CURRENT (mA) 10 1 0.1 0.01 110 120 130 140 150 160 170 180 190 200 210 220 230 V Z , ZENER VOLTAGE (VOLTS) Figure 14. Zener Voltage versus Zener Current - VZ = 110 thru 220 Volts http://www.takcheong.com 9