1N8211N829A-1 WWW.Microsemi .COM 1N821 thru 1N829A-1 DO-7 6.2 & 6.55 Volt Temperature Compensated Zener Reference Diodes SCOTTSDALE DIVISION DESCRIPTION APPEARANCE The popular 1N821 thru 1N829 series of Zero-TC Reference Diodes DO-7 provides a selection of both 6.2 V and 6.55 V nominal voltages and o (DO-204AA) temperature coefficients to as low as 0.0005%/ C for minimal voltage change with temperature when operated at 7.5 mA. These glass axial- leaded DO-7 reference diodes are also available in JAN, JANTX, JANTXV, and JANS military qualifications. Microsemi also offers numerous other Zener Reference Diode products for a variety of other voltages up to 200 V. IMPORTANT: For the most current data, consult MICROSEMIs website: 1N8211N829A-1 WWW.Microsemi .COM 1N821 thru 1N829A-1 DO-7 6.2 & 6.55 Volt Temperature Compensated Zener Reference Diodes SCOTTSDALE DIVISION o *ELECTRICAL CHARACTERISTICS 25 C, unless otherwise specified VOLTAGE MAXIMUM EFFECTIVE ZENER ZENER TEMPERATURE MAXIMUM ZENER TEMPERATURE VOLTAGE TEST STABILITY JEDEC REVERSE IMPEDANCE COEFFICIENT TYPE NUMBER (Note 1 and 4) CURRENT (V MAX) ZT (Note 2) CURRENT o o (Note 1, 5 & 6) V I I -55 C to +100 C Z ZT ZT VZ Z I ZT ZT I 3 V R (Note 3 and 4) o VOLTS mA OHMS A mV %/ C 1N821 5.9 6.5 7.5 15 2.0 96 0.01 1N821A 5.9 6.5 7.5 10 2.0 96 0.01 1N822 5.9 6.5 7.5 15 2.0 96 0.01 1N823 5.9 6.5 7.5 15 2.0 48 0.005 1N823A 5.9 6.5 7.5 10 2.0 48 0.005 1N824 5.9 6.5 7.5 15 2.0 48 0.005 1N825 5.9 6.5 7.5 15 2.0 19 0.002 1N825A 5.9 6.5 7.5 10 2.0 19 0.002 1N826 6.2 6.9 7.5 15 2.0 20 0.002 1N827 5.9 6.5 7.5 15 2.0 9 0.001 1N827A 5.9 6.5 7.5 10 2.0 9 0.001 1N828 6.2 6.9 7.5 15 2.0 10 0.001 1N829 5.9 6.5 7.5 15 2.0 5 0.0005 1N829A 5.9 6.5 7.5 10 2.0 5 0.0005 *JEDEC Registered Data. Double Anode electrical specifications apply under both bias polarities. NOTES: 1. Add a -1 suffix for internal metallurgical bond. When ordering devices with tighter tolerances than specified for the V voltage nominal of Z 6.35 V, add a hyphened suffix to the part number for desired tolerance, e.g. 1N827-1-2%, 1N829-1-1%, 1N829A-1%, 1N829A-1-1%, etc. o 2. Zener impedance measured by superimposing 0.75 mA ac rms on 7.5 mA dc 25 C. 3. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV change at discrete temperature between the established limits. 4. Voltage measurements to be performed 15 seconds after application of dc current. 5. 1N821, 1N823, 1N825, 1N827, and 1N829 also have qualification to MIL-PRF-19500/159 by adding the JAN, JANTX, JANTXV, or JANS prefix to part numbers as well as the -1 suffix e.g. JANTX1N827-1, JANTXV1N829-1, etc. 6. Designate Radiation Hardened devices with RH prefix instead of 1N, e.g. RH829A instead of 1N829A. GRAPHS The curve shown in Figure 1 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 7.5mA. EXAMPLE: A diode in this series is operated at a current of 7.5mA and has specified Temperature Coefficient (TC) limits of o +/-0.005%/ C. To obtain the typical Temperature Coefficient limits for this same diode operated at a current of 6.0mA, the o new TC limits (%/ C) can be estimated using the graph in FIGURE 1. At a test current of 6.0mA the change in Temperature Coefficient o (TC) is approximately 0.0006%. C. The algebraic sum of +/- o o 0.005% C and 0.0006%/ C gives the estimated limits of o o +0.0044%/ C and -0.0056%/ C. FIGURE 1 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT. Copyright 2003 Microsemi Page 2 10-27-2003 REV C Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 o Change in temperature coefficient (%/ C) o Change in temperature coefficient (mV/ C)
