1N5221B - 1N5279B Zeners tm are high voltage, low leakage, high current, 5% tolerance diodes that are intended for use in a wide range of applications.
This Fairchild datasheet provides the absolute maximum ratings, electrical characteristics and top‑mark identification for the 1N5221B through 1N5279B series of Zener diodes. It includes power dissipation limits, temperature ranges, forward voltage and detailed Zener voltage values for each part number.
Additional sections cover trademark information, product status definitions, and legal disclaimer notes. The document is intended for designers and engineers who need precise specifications for circuit design and component selection.
| Power Dissipation (Pp) | 500 mW |
|---|---|
| Storage Temperature Range (Tsta) | -65 to +200 °C |
| Maximum Junction Operating Temperature (Ty) | +200 °C |
| Lead Temperature (10 s) | +230 °C |
| Forward Voltage (Vf) max | 1.2 V @ 200 mA |
| Zener Voltage (1N5221B) | 2.28 V @ Iz≈2 mA |
The maximum power dissipation is 500 mW.
They can be stored from –65 °C up to +200 °C.
The forward voltage is limited to 1.2 V at 200 mA.
Part 1N5221B has a Zener voltage of 2.28 V at the specified test current.