This datasheet is an introduction to 1n821-1n829a-1, including product features, application scenarios, usage instructions, etc.
The 1N821 through 1N829A-1 series are glass axial‑lead DO‑7 Zener reference diodes offering nominal voltages of 6.2 V and 6.55 V with very low temperature coefficients, suitable for instrumentation and circuits requiring stable voltage references. The series includes options for tighter voltage tolerances, double‑anode devices, and radiation‑hardened variants.
Key electrical parameters include a maximum power dissipation of 500 mW at 25 °C, a recommended operating current of 7.5 mA for optimal stability, and an operating temperature range from –65 °C to +175 °C. Devices are supplied in a hermetically sealed glass DO‑7 (DO‑204AA) package weighing about 0.2 g, with optional tape‑and‑reel packaging per EIA‑296.
| Nominal Voltage | 6.2 V & 6.55 V |
|---|---|
| Temperature Coefficient | as low as 0.0005 %/°C |
| Operating & Storage Temperature | -65 °C to +175 °C |
| DC Power Dissipation | 500 mW @ 25 °C |
| Maximum Current (Iz) | 70 mA |
| Solder Temperature | 260 °C for 10 s (max) |
| Weight | 0.2 g |
The series offers temperature coefficients as low as 0.0005 %/°C.
They can operate and be stored from –65 °C up to +175 °C.
Use the “RH” prefix instead of “1N”, e.g., RH827 or RH829A.