0003918 4?4 MBMSC 1IN821&A thru INS29&A DO-35 MICROSEMI CORP SSE D MM 115865 FEATURES ZENER VOLTAGE 6.2V AND 6.55 V 1N821, 823, 825, 827 AND 829 HAVE JAN, JANTX, JANTXV-1 QUALIFICATIONS TO MIL-S-19500/159 JANS EQUIVALENT AVAILABLE VIA SCD ALSO AVAILABLE IN 00-7 PACKAGE MAXIMUM RATINGS Operating Temperatures: - 65C to +17 5C " Storage Temperatures: - 65C to + 175C DC Power Dissipation: 250 mW @ 25C ambient Derating: 1.67 mW/C above 25C *ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified al VOLTAGE MAXIMUM ZENER ZENER TEMPERATURE JEDEC VOLTAGE TEST ZENER STABILITY EFFECTIVE TYPE (Note {and 4)) CURRENT | qiMPEDANCE (Vey MAX) TEMPERATURE NUMBER (Note 3 and 4) aut COEFFICIENT Vz @ lar lar Z 55 to +100 a iH ZT (Note 3 and 4) Vz VOLTS mA OHMS mv %Iee 1N821 59-65 75 15 96 0.01 1N821A 59-65 75 10 96 0.01 1N8224 59-65 75 15 96 0.01 1N823 59-65 75 15 48 0.005 1N823A 59-65 75 10 48 0.006 1N824+ 59-65 75 15 48 6.005 1N825 59-65 75 15 19 0.002 1N825A 59-65 75 10 19 0.002 1N826 62-69 75 15 20 0.002 1N827 59-65 75 15 9 0.001 1N827A 59-65 75 10 9 0.001 1N828 62-69 75 15 10 0.001 1N829 59-65 75 15 5 0.0005 1NS29A 59-65 75 10 5 0.0005 {Double Anode; Electrical Specifications Apply Under Both Bias Polarities. *JEDEC Registered Data NOTE1 When ordering devices with tighter tolerances than specified, use a nominal Vz voltage of 6.35 V. NOTE 2 Measured by superimposing 0.75 mA ac rms on 7.5 mA DC @ 25C. NOTE3 The maximumallowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV change at any discrete temperature between the established limits. NOTE 4 Voltage measurements to be performed 15 seconds after application of DC current. MICROSEMI CORP S9E D @@ 6115865 9001919 300 m@nsc 1N821 thru 1N829A DO-35 _ The curve shown in Figure 3 is typical of the diode series and greatly simplifies the estimation of the Temperature Coefficient (TC) when the diode is operated at currents other than 7.5 mA. EXAMPLE: A diode in this series is operated at a current of 7.5mA and has specified Temperature Coefficient (TC) limits of +0.005%/C. To obtain the typical Temperature Coefficient limits for this same diode operated at a current of 6.0mA, the new TC limits (%/C) can be estimated using the graph in FIGURE 3. At a test current of 6.0mA the change in Temperature Coefficient (TC) is approximately 0.0006%/C. The algebraic sum of +0,005%/C and 0.0006%/C gives the new estimated limits of +0.0044%/C and ~0.0056%/C. G +.006 a 5 Z 3 +.004 +25 = 300 2 = & +.002 eo tg c > | zo 5 S 9 0 8 & 200 2 Lot = 8 5 \ oe a _.002 A 12 3 8 3 YY ' & 2 199 & 004 -25 8 3 & 1 3 & ~.006 ' a) s Cc ' <= oo g 75 3 0 SG .008 | 5 2 25 50 100 150 200 2 4 6 8 10 12 14 16 18 2 T,, Lead temperature (C) 3/8 fram body Iz, Operating Current (mA) FIGURE 2 FIGURE 3 POWER DERATING CURVE TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT +200 +100 100 75 200 2 4 6 8 10 12 14 #16 18 20 |z, Operating Current (mA) FIGURE 4 TYPICAL CHANGE OF ZENER VOLTAGE WITH CHANGE IN OPERATING CURRENT This curve in Figure 4 illustrates the change of diode voltage arising from the effect of impedance. It is in effect an exploded view of the zener operating region of the ]-V characteristic. AVz, Change in Zener Voltage (mV) In conjunction with Figure 3, this curve can be used to estimate total voltage regulation under conditions of both varying tem- perature and current. 124