The BZX79 series of silicon planar Zener diodes is characterized by Zener voltages graded according to the international E24 standard, and available in tolerance series of ±2%, ±3% and ±5%. Higher Zener voltages and 1% tolerance are available on request.
The BZX79 series are silicon planar Zener diodes offered by General Semiconductor. They are supplied in DO‑35 glass cases with a typical weight of 0.13 g. The series includes several tolerance options (+2%, +3%, +5%) and covers a wide range of Zener voltages.
The datasheet provides detailed electrical characteristics, maximum ratings, and thermal performance data, including power dissipation, forward current, and temperature limits. Graphs illustrate breakdown behavior, dynamic resistance, and capacitance versus voltage and temperature.
| Case type | DO-35 Glass Case |
|---|---|
| Weight | approx. 0.13 g |
| Power dissipation (25 °C) | 500 mW |
| Continuous forward current (IF) | 250 mA |
| Peak reverse power dissipation (non‑repetitive) | 40 W (tp = 100 ms) |
| Junction temperature range | -65 °C to 200 °C |
| Storage temperature range | -65 °C to +200 °C |
| Forward voltage at 10 mA | 0.9 V |
| Tolerance series | +2% BZX79‑B, +3% BZX79‑F, +5% BZX79‑C |
The BZX79 diodes are supplied in a DO‑35 glass case.
The maximum power dissipation at 25 °C is 500 mW.
The series is offered in +2% (BZX79‑B), +3% (BZX79‑F), and +5% (BZX79‑C) tolerance versions.