1N821UR-1 1N829AUR-1 *Qualified Levels: JAN, JANTX, 6.2 & 6.55 Volt Zener Reference Diodes Available on JANTXV and JANS commercial Qualified per MIL-PRF-19500/159 versions (available on some part numbers) DESCRIPTION The 1N821UR-1 1N829AUR-1 series of surface mount temperature compensated reference diodes provides both 6.2 V and 6.55 V nominal voltages and temperature coefficients as low o as 0.0005 %/ C at a Zener test current of 7.5 mA. These glass surface mount DO-213AA (MELF) reference diodes are optionally available as RoHS compliant for commercial applications. This type of bonded Zener package construction is also available in JAN, JANTX, JANTXV and JANS military qualifications (RoHS compliant option not applicable). Microsemi also offers other Zener Reference Diode products for a variety of voltages up to 200 V. DO-213AA Important: For the latest information, visit our website 1N821UR-1 1N829AUR-1 MECHANICAL and PACKAGING CASE: Hermetically sealed glass case. DO-213AA package. TERMINALS: Tin-lead (military) or RoHS compliant annealed matte-tin plating (commercial grade only) solderable per MIL-STD- 750, Method 2026. MARKING: Cathode band (except double anode 1N822 and 1N824). POLARITY: Reference diode to be operated with the banded end positive with respect to the opposite end. MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) of this device is approximately +6PPM/C. The COE of the mounting surface system should be selected to provide a suitable match with this device. TAPE & REEL option: Standard per EIA-481-B with 12 mm tape (add TR suffix to part number). Consult factory for quantities. WEIGHT: Approximately 0.04 grams. See Package Dimensions on last page. PART NOMENCLATURE Applicable to: JAN, JANTX, JANTXV and JANS of 1N821, 1N823, 1N825, 1N827, and 1N829 only: JAN 1N821 UR -1 Reliability Level Metallurgical Bond JAN = JAN Level JANTX = JANTX Level Surface Mount Package JANTXV = JANTXV Level JANS = JANS Level JEDEC type number Blank = Commercial (see Electrical Characteristics table) Applicable to: commercial 1N821, 1N823, 1N825, 1N827, and 1N829 only: 1N821 A UR -1 (e3) JEDEC type number RoHS Compliance (see Electrical Characteristics e3 = RoHS compliant table) Blank = non-RoHS compliant Zener Impedance Surface Mount Package A = 10 ohms Blank = 15 ohms Metallurgical Bond Applicable to: 1N822, 1N824, 1N826 and 1N828 only: 1N822 UR -1 (e3) JEDEC type number RoHS Compliance (see Electrical Characteristics e3 = RoHS compliant table) Blank = non-RoHS compliant Surface Mount Package Metallurgical Bond T4-LDS-0220-1, Rev. 2 (7/29/13) 2013 Microsemi Corporation Page 2 of 5