MZ821,A MZ823,A MZ825,A M7827, A M2935 AB Designers Data Sheei thru MZ938 A,B 9.0 VOLTS + 5% RADIATION HARDENED TEMPERATURE-COMPENSATED MZ941,A,B ZENER REFERENCE DIODES t r u Highly reliable reference sources utilizing an oxide-passivated junc- MZ9 4 4 A B tion for long-term voltage stability. Ramrod construction provides git, a rugged, glass-enclosed, hermetically sealed structure. 11.7 VOLTS + 5% Specified Radiation Effects MZ3154,A @ Low Dynamic Impedance th @ Choice of Temperature Ranges ru @ Box Method Specifications Guarantee Maximum Voltage Devia- MZ3156,A chine Choice of Four Voltages 8.4 VOLTS + 5% RADIATION HARDENED Fi 1 " tg: TEMPERATURE-COMPENSATED Designers Data for Worst Case Conditions SILICON ZENER The Designers Data sheets permit the design of most circuits entirely from the information presented, Limit curves representing boundaries on device REFERENCE DIODES characteristics are given to facilitate worst case design. = B a MAXIMUM RATINGS Junction Temperature: -55 to + 175C f CATHODE Storage Temperature: -65 to +1759C BAND DC Power Dissipation: 400 mW @ Ta = 25C MECHANICAL CHARACTERISTICS CASE: Hermetically sealed, all-glass CASE 51-02 DIMENSIONS: See outline drawing DO-204AA FINISH: All external surfaces are corrosion resistant and leads are readily solderable and weldable. DIM POLARITY: Cathode indicated by polarity band, WEIGHT: 0.2 Gram (approx) MOUNTING POSITION: Any All JEDEC dimensions and notes apply 1452321,A, MZ823,A, MZ825,A, MZ827,A, MZ935,A,B thru MZ938,A,B, 341,A,B thru MZ944,4,B, MZ3154,A thru MZ3156,A (continued) STRICAL CHARACTERISTICS (T, = 25C unless otherwise noted) Maximum Maximum Voltage Ambient Air Temperatura Dynamic Reference Motorola Change Test Coefficient Impedance Voltage at Type No. 4Vz (Volts) Temperatures %/C Zz7 Ohms est Current (Note 1} {Note 2} C (Note 2) (Note 3) MZ821 0.096 0.01 MZ823 0.048 0.005 MZ825 0.019 0.002 15 MZ827 0.009 0.001 zZ76.2V+5% -55, 0, +25, @12T = 7.6 mA Mza21A 0.096 +78, +100 0.01 MZ823A 0.048 0.005 MZ825A 0.019 0.002 10 MZ827A 0.009 0.001 MZ935 0.067 0.01 MZ936 0.033 0.005 MZ937 0.013 0, +25, +75 0.002 20 MZ938 0.006 0.001 MZ935A 0.139 6.01 Vz = 9.0 V + 5% MZ936A 0.069 -55, 0, +25, 0.005 @ let =7.5mA MZ937A 0.027 +75, +100 0.002 20 MZ938A 0.013 0.001 MZ935B 0.184 0.01 MZ936B8 0.092 -65, 0, +25, 0.005 MZ937B 0.037 +75, +100, +150 0.002 20 MZ938B 0.018 0.001 MZ941 0.088 0.01 MZ942 0.044 0, +25, +75 0.005 30 MZ943 0.018 0.002 MZ944 G.G09 0.001 MZ941A 0.181 0.01 Vz = 18.7 V4 5% MZ942A 0.090 -55, 0, +25, 0.005 @ iz =7.8mA MZ9434 0.036 +75, +100 0.002 30 MZ9444 0.018 0.001 MzZ941B6 0.239 0.01 MZ942B 0.120 0.005 MZ943B 0.047 -55, 0, +25, 0.002 30 MZ944B8 0.024 +75, +150 0.001 MZ945B 0.012 0.0005 MZ946B 0.005 0.0002 MZ3154 0.130 0.01 MZ3155 0.065 -55, 0, +25 0.005 15 MZ3156 0.026 +75, +100 0.002 V2 =8.4V + 5% @lzT=t0mA MZ3154A 0.172 6.01 MZ3155A 0.086 -55, 0, +25, 0.005 15 MZ3156A 0.034 +75, +100, +150 0.002 14534Tc, TEMPERATURE COEFFICIENT CHANGE (%/C) 427T, IMPEDANCE CHANGE (OHMS) MZ821,A, MZ823,A, MZ825,A, MZ827,A, MZ935,A,B thru MZ938,A,B, MZ941,A,B thru MZ944,A,B, MZ3154,A thru MZ3156,A (continued) EFFECTS OF NEUTRON DOSAGE FIGURE 1 EFFECT OF NEUTRON DOSAGE ON REFERENCE VOLTAGE 88 e288 TYP MZ941 SERIES 4Vz, VOLTAGE CHANGE (mv) : 3 a o ' nN 2 of the units change less than 2.5 times typical value shown. -1.0 10 10 @, NEUTRONS/cm2 (E > 10 Kev) FIGURE 2 TYPICAL EFFECT OF NEUTRON DOSAGE ON TEMPERATURE COEFFICIENT 6.01 0.005, 0.002 0.001 4Ta = -55C to +150C 0.0005 9.0002 0.0001 MZ3154 0.00005 oo 2 Ss Ss Ss =-SRK o 10 10 10! 10 2 (NOTE: Change may be either positive or negative) @. NEUTRONS/cm* {E > 10 Kev) FIGURE 3 EFFECT OF NEUTRON DOSAGE ON IMPEDANCE 90% of the units change less than 2 times typical value shown. CHANGE yor2 1913 1014 115 1016 , NEUTRONS/cm2 {E > 10 Kev) 1454'821,A, MZ823,A, MZ825,A, MZ827,A, MZ935,A,B thru MZ938,A,B, 941,A,B thru MZ944,A,B, MZ3154,A thru MZ3156,A (continued) 1 FIGURE 4 127 =7.5 mA MZ821.A MAXIMUM VOLTAGE CHANGE versus AMBIENT TEMPERATURE (with [z7 = 7.5 mA + 0.01 mA) Z823,A ANZ = +31.0 mV vese graphs can be used to determine the maximum voltage MZ625.A ange of any device in the series over any specific temperature nge. For example, a temperature change from 0 to +50C 11H cause a voltage change no greater than +31 mV or -31 aV for MZ8210r MZ821A, as illustrated by the dashed lines in Figure 4.. The boundaries given are maximum values. Ex- panded views of Maximum Voltage Change versus Ambient Temperature curves are shown on the standard data sheet 1N821,A, 1N823,A, 1N825,A, 1N827,A, 1N829,A. The maximum voltage change, 4Vz, in Figures 5 and 6 is due entirely to the impedance of the device. !f both temperature and |Z7 are varied, then the total voltage change may be ob- tained by adding Vz in Figure 5 or 6 ta the 4Vz in Figure 4 for the device under consideration. If the device is to be operated at some stable current other than the specified test current, a new set of characteristics may be plotted by super- imposing the data in Figure 5 or 6 on Figure 4. MZ829,A A {Referenced to -55C) MZ825,A 4Vz, MAXIMUM VOLTAGE CHANGE (mv) MZ823,A 55 8 50 Ta, AMBIENT TEMPERATURE (C) ZENER CURRENT versus MAXIMUM VOLTAGE CHANGE {At Specified Temperatures) (See Note 5) MORE THAN 95% OF THE UNITS ARE IN THE RANGES INDICATED BY THE CURVES FIGURE 5 MZ821 SERIES FIGURE 6 MZ821A SERIES 10 10 1 55C Y +259C: A, +1009C Sf +1000 9.0 9.0 | -550C z +. +250 a = ao = 80 so ! e . at 2 m-1--2- Esp 4 ep = 79 = 70 J a 3 | a | tw \ Z 6.0 | Z 60 ni +100C: ZL s250 { nN f/f | = y j 6g +100C 4 +250C 5.0 4 0 oA + -550c | ZL, vo 3 | 4.0 4 CL | 4.0 a A 78 -50 -25 6 Py 50 -75 -50 25 0 25 50 Vz, MAXIMUM VOLTAGE CHANGE (mv} Vz, MAXIMUM VOLTAGE CHANGE {mV} (Referenced to I7T = 7.5 mA) {Referenced to Izt = 7.5 mA) MAXIMUM ZENER IMPEDANCE versus ZENER CURRENT {See Note 3} MORE THAN 95% OF THE UNITS ARE IN THE RANGES INDICATED BY THE CURVES FIGURE 7 MZ821 SERIES FIGURE 8 MZ821A SERIES 1000 800 Ss) 2 Ss = 400 200 PaaS ooos 22, MAXIMUM ZENER IMPEDANCE (OHMS) Zz, MAXIMUM ZENER IMPEDANCE (OH: ch o 2.0 40 60 8.010 20 40 60 80100 1.0 2.0 4.0 6.0 8.010 20 40 60 80100 \z, ZENER CURRENT (mA) Iz, ZENER CURRENT (mA} o 1455MZ821,A, MZ823,A, MZ825,A, MZ827,A,MZ935,A,B thru MZ938,A,B, MZ941,A,B thru MZ944,A,B, MZ3154,A thru MZ3156,A (continued) MAXIMUM VOLTAGE CHANGE versus TEMPERATURE (With 177 = 7.5 MA + 0.01 mA) FIGURE 9 ~ MZ935 thru MZ939 I2T= 7.5 mA MZ935 50 =] o a (Referenced to 0C) nN a aVz = -22.0 mv aVz, MAXIMUM VOLTAGE CHANGE (mv) Mz935 50 15 Ta. AMBIENT TEMPERATURE (C) FIGURE 11 MZ935B thru MZ9398 200 {27 =7.5mA MZ9358 160 2 Ss MZ936B n o MZ938B o (Referenced to -55C) V2, MAXIMUM VOLTAGE CHANGE (mV) & 100 MZ336B -150 29358 -200 55 0 50 100 150 Ta, AMBIENT TEMPERATURE (9C) FIGURE 12 ZENER CURRENT versus MAXIMUM VOLTAGE CHANGE (at specified temperatures) (See Note 5) MORE THAN 95% OF THE UNITS ARE JN THE RANGES INDICATED BY THE CURVES 10 +2500 9.0 ech [P~ 1590 , +7506 = 3.0 \zr ~ pey~-2e4t-__ = a 70 f s | 2 c I = 60 1 z +1500C { N ~59C S50 oa t +7 em P2506 | 4.0 Z| ! -150 -100 -60 Q 50 100 4VZ, MAXIMUM VOLTAGE CHANGE (mvV} (Referenced to |z7 = 7.5 mA) 1456 Vz, MAXIMUM VOLTAGE CHANGE (mV} Zz, MAXIMUM ZENER IMPEDANCE (OHMS) (Reference to -55C} FIGURE 10 MZ935A thru MZ939A 180 lzp=7.6mA MZ936A a a MZ937A MZ938A =t MZ9394 o on So MZ936A -100 -160 5 1 150 Ta, AMBIENT TEMPERATURE (C) These graphs can be used to determine the maximum voltage change of any device in the series over any specific temperature range. For example, a temperature change from +25 to +50C will cause a voltage change no greater than +22 mV or - 22 mV for MZ9385, as itlustrated by the dashed tines in Figure 9. The boundaries given are maximum values. Expanded views of Maximum Voltage Change versus Ambient Temperature curves are shown on the standard data sheet 1N935,A,B thru 1N939,A,B. The maximum vottage change, 4Vz, in Figure 12 is due en- tirely to the impedance of the device. If both temperature and !z7 are varied, then the total voltage change may be obtained by adding 4Vz in Figure 12 to the 4Vz in Figure 9, 10, or 11 for the device under consideration. If the device is to be operated at some stable current other than the speci- fied test current, a new set of characteristics may be plotted by superimposing the data in Figure 12 on Figure 9, 10, or 11. FIGURE 13 MAXIMUM ZENER IMPEDANCE versus ZENER CURRENT (See Note 3) 1000 MORE THAN 95% OF THE UNITS ARE IN THE INDICATED 8Y THE CURVES 600 400 10 (z, ZENER CURRENT (mA} 1.0 100a MZ821,A, MZ823,A, MZ825,A, MZ827,A,MZ935,A,B thru MZ938,A,B, MZ941,A,B thru MZ944,A,B, MZ3154,A thru MZ3156,A (continued) MAXIMUM VOLTAGE CHANGE versus AMBIENT TEMPERATURE (With Iz77 = 7.5 mA + 0.01 mA) FIGURE 14 MZ941 thru MZ946 MZ945, MZ944 -MZ943 (Referenced to 0C} | aVZ * -28.0 mV t 4Vz, MAXIMUM VOLTAGE CHANGE (mV) Ta, AMBIENT TEMPERATURE (C} FIGURE 16 MZ9416 thru MZ946B MZ941B MZ943B (Reference ta -55C) 5 7100 4Vz, MAXIMUM VOLTAGE CHANGE {mV} MZ941B -5 9 50 100 160 Ta, AMBIENT TEMPERATURE (C) FIGURE 17 ZENER CURRENT versus MAXIMUM VOLTAGE CHANGE {At specified temperatures) (See Note 5) we THAN 95% OF THE UNITS ARE IN THE RANGES INDICATED BY THE CURVES ~C 4 +750C 9.0 = +250 = +1500C = 8.0 S 75+ j} 20. | _ S10 ao FA +1509 | & 60 | N 60 + > +750 sasoc | 6 i 5.0 \Z t A 86C ! 4.0 1 l -150 =1001 ~50 0 50 100 4V7, MAXIMUM VOLTAGE CHANGE {Referenced to 177 = 7.5mA) 1457 4Vz, MAXIMUM VOLTAGE CHANGE (mV) (Referenced to -55C) oe S -150 1 Zz, MAXIMUM ZENER IMPEDANCE (OHMS) -100 200 FIGURE 16 MZ941A thru MZ946A 1A 150 MZ942A wp o MZ9434, MZ945A | MZ944A o MZ942A MZ9414 50 100 Ta, AMBIENT TEMPERATURE (9C) These graphs can be used to determine the maximum voltage change of any device in the series over any specific temperature range. For example, a temperature change from +25 to +50C will cause a voltage change no greater than +29 mV or - 28 mV for MZ941, as illustrated by the dashed lines in Figure 14. The boundaries given are maximum values. Expanded views of Maximum Voltage Change versus Ambient Temperature curves are shown on the standard data sheet 1N941,A,6 thru 1N946,A,B. The maximum voltage change, Vz, in Figure 17 is due en- tirely to the impedance of the device. If both temperature and !77 are vaired, then the total voltage change may be ob- tained by adding 4Vz in Figure 17 to the 4Vz in Figure 14, 15, or 16 for the device under consideration. If the device is to be operated at some stable current other than the specified test current, a new set of characteristics may be plotted by superimposing the data in Figure 17 on Figure 14, 15, or 16. FIGURE 18 MAXIMUM ZENER IMPEDANCE versus ZENER CURRENT (See Note 3) ooo ne THAN 95% OF THE UNITS ARE IN THE RANGES INDICATED BY THE CURVES 0 1.0 10 100 lz, ZENER CURRENT (mA)MZ821,A, MZ823,A, MZ825,A, MZ827,A,MZ935,A,B thru MZ938,A,B, MZ941,A,B thru MZ944,A,B, MZ3154,A thru MZ3156,A (continued) Vz, MAXIMUM VOLTAGE CHANGE (mV) Iz, ZENER CURRENT (mA) MAXIMUM VOLTAGE CHANGE versus AMBIENT TEMPERATURE (With Iz7 = 1.0 mA + 0.01 mA) These graphs can be used to determine the maximum voltage change of any device in the series over any specific temperature range. For example, a temperature change from 0 to +50C will cause a voltage change no greater than +42 mV or ~ 42 mV for MZ3154, as illustrated by the dashed lines in Figure 19. The boundaries given are maximum values. Expanded views of Maximum Voltage Change versus Ambient Temper- ature curves are shown on the standard data sheet 1N3154,A thru 1N3157,A. FIGURE 19 MZ3154 thru MZ3157 150 M (zT= 16 mA Z3184 100 AV? = 442.0 mV MZ3155 60 a 23156 = MZ3157 3 a & 2 = NZ3157 -50 AVZ = -42.0 mv 100 -150 50 100 Ta, AMBIENT TEMPERATURE (C) FIGURE 21 ZENER CURRENT versus MAXIMUM VOLTAGE CHANGE (at specified temperatures) (Sea Note 5) 12 3.0 8.0 70 MORE THAN 95% OF THE UNITS ARE IN THE RANGES INDICATED BY THE CURVES -550 | +2500 +1069C VA. Naisoee [421 en | i +1509C Y/ | | 0; LT I i 5 ~50 25 0 25 50 NZ, MAXIMUM VOLTAGE CHANGE (mV) (Referenced to |77 = 10 mA) Zz, MAXIMUM ZENER IMPEDANCE (OHMS) 3 The maximum voltage change, 4Vz, in Figure 21 is due en- tirely to the impedance of the device. |f both temperature and ZT are varied, then the total voltage change may be ob- tained by adding 4V7Z in Figure 21 to the 4Vz in Figure t9 or 20 for the device under consideration. If the device is to be operated at some stable current other than the specified test current, a new set of characteristics may be plotted by superimposing the data in Figure 21 on Figure 19 or 20. FIGURE 20 MZ3154A thru MZ3157A 200 MZ3 154A (zt =10 150 2 S on a MZ3156A MZ3 157A MZ3157A (Referenced to-55C} o AVZ, MAXIMUM VOLTAGE CHANGE (mV) t 3 -100 ~180 ~55 Q 50 100 180 Ta, AMBIENT TEMPERATURE (C) FIGURE 22 MAXIMUM ZENER IMPEDANCE versus ZENER CURRENT (See Note 3) THE UNITS ARE IN THE RANGES INDICA ay g a a wn = 30 40 1 5.0 18 20 1z, ZENER CURRENT (mA) 1458MZ821,A, MZ823,A, MZ825,A, MZ827,A,MZ935,A,B thru MZ938,A,B, MZ941,A,B thru MZ944,A,B, MZ3154,A thru MZ3156,A (continued) RADIATION EFFECTS Standard Zener Diodes are inherently radiation sesistant because of high doping levels. This is not the case in Temperature Compen- sated Zener Reference Diodes because standard diffused, forward- biased, P-N junctions having negative temperature coefficients are utilized to compensate for the positive temperature coefficient of the zener die. Normally, the characteristic of the foward-biased P-N junction changes significantly with fast neutron dosage and makes the composite device sensitive to radiation. Motorola ut+ lizes specially processed P-N junctions to provide devices capable of meeting the information shown in Figures 1, 2 and 3. The radiation effects curves were generated based on data obtained by irradiating devices in a Triga Reactor, Note: 3 neutron/cm {Triga Reactor) = 1 neutron/cm< (1Mev equivalent.) NOTE 1: The Motorola listed types have electrical specifications identical to the IN... counterpart, i.e,, MZ821 is identical to 1N821, NOTE 2: Voltage Variation (AVz) and Temperature Coefficient All reference diodes are characterized by the box method. This guarantees a maximum voltage variation (4Vz) over the specified temperature range, at the specified test current (Iz7}, verified by tests at indicated temperature points within the range. This method of indicated voltage stability is now used for JEDEC registration as well as for military qualification. The former method of indi- cating voltage stability by means of temperature coefficient accurately reflects the voitage deviation at the temperature ex- tremes, but is not necessarily accurate within the temperature range because reference diodes have a noniinear temperature relationship. The temperature coefficient, therefore, is given only as a reference. NOTE 3: Zener tmpedance Derivation The dynamic zener impedance, Z27, is derived from the 60-Hz ac voltage drop which results when an ac current with an rms value equal to 10% of the dc zener current, I77, is superimposed on IZ7T. Curves showing the variation of the zener impedance with zener current for each series are given. A cathode-ray tube curve-trace test on a sample basis is used to ensure that each zener characteristic has a sharp and stable knee region. 1459