DESCRIPTION
The 1N821UR thru 1N829AUR-1 series of surface mount Zero-TC Reference Diodes provides a selection of both 6.2 V and 6.55 V nominal voltages and temperature coefficients to as low as 0.0005%/oC for minimal voltage change with temperature when operated at 7.5 mA. These glass surface mount DO-213AA (MELF) reference diodes are optionally available with an internal-metallurgical-bond by adding a “-1” suffix. This type of bonded Zener package construction is also available in JAN, JANTX, and JANTXV military qualifications. Microsemi also offers numerous other Zener Reference Diode products for a variety of other voltages up to 200 V.

FEATURES
• Surface mount equivalent of JEDEC registered
   1N821 thru 1N829 series
• Internal metallurgical bond option available by adding
   a “-1” suffix
• Reference voltage selection of 6.2 V & 6.55 V +/-5%
   with further tight tolerance options at lower voltage
• 1N821, 823, 825, 827 and 829 also have surface
   mount qualification to MIL-PRF-19500/159 by adding
   the JAN, JANTX, or JANTXV prefixes to part
   numbers a well as the “-1” suffix; e.g. JANTX1N829-
   1, etc.
• Axial-leaded equivalents also available in DO-35 or
   DO-7 without the UR suffix (see separate data sheet)
   including military qualifications up to JANS for DO-7
   (see separate data sheet)
• JANS equivalent available in DO-213AA via SCD

APPLICATIONS / BENEFITS
• Provides minimal voltage changes over a broad
   temperature range
• For instrumentation and other circuit designs
   requiring a stable voltage reference
• Maximum temperature coefficient selections available
   from 0.01%/ºC to 0.0005%/ºC
• Tight reference voltage tolerances available with
   center nominal value of 6.15 V by adding designated
   tolerance such as 1%, 2%, 3%, etc. after the part
   number for identification
   e.g. 1N827UR-2%, 1N829AUR-1-1%, etc.
• Small surface-mount footprint
• Nonsensitive to ESD per MIL-STD-750 Method 1020
• Typical low capacitance of 100 pF or less