1N821-1 1N829A-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 popular 1N821-1 1N829A-1 series of temperature compensated reference diodes provides both 6.2 V and 6.55 V nominal voltages and temperature coefficients as low as o 0.0005 %/ C at a Zener test current of 7.5 mA. These DO-35 packaged (glass, axial leaded) reference diodes are optionally available as RoHS compliant. This type of bonded Zener package construction is also available in JAN, JANTX, JANTXV and JANS military qualifications where the RoHS compliant e3 is not an option. Microsemi also offers other Zener Reference Diode products for a variety of voltages up to 200 V. Important: For the latest information, visit our website 1N821-1 1N829A-1 MECHANICAL and PACKAGING CASE: Hermetically sealed glass case. DO-35 (DO-204AH) package. TERMINALS: Tin-lead (military) or RoHS compliant annealed matte-tin plating (commercial grade only) solderable per MIL-STD- 750, method 2026. MARKING: Part number and cathode band (except double anode 1N822-1 and 1N824-1). POLARITY: Reference diode to be operated with the banded end positive with respect to the opposite end. TAPE & REEL option: Standard per EIA-296 (add TR suffix to part number). Consult factory for quantities. WEIGHT: Approximately 0.2 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 -1 Reliability Level Metallurgical Bond JAN = JAN Level JANTX = JANTX Level JEDEC type number JANTXV = JANTXV Level (see Electrical Characteristics JANS = JANS Level table) Blank = Commercial Applicable to: commercial 1N821, 1N823, 1N825, 1N827, and 1N829 only: 1N821 A -1 (e3) JEDEC type number RoHS Compliance (see Electrical Characteristics e3 = RoHS compliant table) Blank = non-RoHS compliant Zener Impedance Metallurgical Bond A = 10 ohms Blank = 15 ohms Applicable to: 1N822, 1N824, 1N826 and 1N828 only: 1N822 -1 (e3) JEDEC type number RoHS Compliance (see Electrical Characteristics e3 = RoHS compliant table) Blank = non-RoHS compliant Metallurgical Bond T4-LDS-0220, Rev. 2 (7/29/13) 2013 Microsemi Corporation Page 2 of 5