BZX79-B20,133

Single Zener Diodes Overview

The Nexperia BZX79-B20,133 is a voltage regulator diode from the BZX79 series, housed in a hermetically sealed leaded glass SOD27 (DO-35) package. It features a nominal Zener voltage of 20 V with a tight tolerance of ±2%. The device supports a maximum total power dissipation of 500 mW and operates within an extended temperature range of -65 °C to +200 °C. Designed for through-hole mounting, it provides stable voltage regulation suitable for low-power applications requiring precise reference levels.

Single Zener Diodes Feature Summary

• Hermetically sealed leaded glass construction ensures long-term reliability
• Tight ±2% voltage tolerance for precision regulation requirements
• Extended operating temperature range up to +200 °C

Single Zener Diodes Applications

• Low voltage stabilizers
• Voltage references

Single Zener Diodes Procurement Notes

Verify the specific suffix

Single Zener Diodes Selection Notes

Select this component when a 20 V regulated output is required with high precision. The ±2% tolerance distinguishes it from standard ±5% variants. Ensure the circuit design accommodates the 500 mW power dissipation limit at the expected ambient temperature. The DO-35 package dictates through-hole PCB layout constraints.

Single Zener Diodes Part Context

This part belongs to the BZX79 series of low-power voltage regulator diodes manufactured by Nexperia. The series offers 37 types covering nominal working voltages from 2.4 V to 75 V. The BZX79-B variant specifically denotes the normalized E24 series with ±2% tolerance, contrasting with the BZX79-C series which offers approximately ±5% tolerance.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.