1N5259B_T50R

Single Zener Diodes Overview

The onsemi 1N5259B_T50R is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 39 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to +200 °C. Packaged in the DO-35 axial leaded glass enclosure, it exhibits a maximum reverse leakage current of 0.1 µA at the test current of 3.2 mA. This component provides reliable voltage reference capabilities in through-hole circuit designs.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using silicon Zener breakdown characteristics
• Constructed with hermetically sealed glass axial-leaded DO-35 package
• Supports high operating temperatures up to 200 °C

Single Zener Diodes Applications

• Voltage regulation circuits
• Voltage reference sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific manufacturer prefix and suffix against official datasheets to confirm exact electrical tolerances and screening levels. Ensure the DO-35 package dimensions match the target PCB footprint. Confirm RoHS compliance status if required by the assembly process. Cross-reference part numbers from different manufacturers like Microsemi or NXP as they share the base 1N5259B designation but may have slight parameter variations.

Single Zener Diodes Selection Notes

Select this component when a 39 V Zener voltage is required in a low-power through-hole application. The 500 mW power rating suits moderate current loads. Consider the ±5% tolerance for precision requirements. The DO-35 glass package offers environmental sealing. Verify thermal management needs given the 200 °C junction temperature limit.

Single Zener Diodes Part Context

The 1N5259B belongs to the broader 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. This series covers a wide voltage range from 2.4 V to 200 V. The 1N5259B specifically targets the 39 V segment. Manufacturers including onsemi, Microsemi, and NXP produce variants under this standard numbering system.

Single Zener Diodes Replacement Considerations

Equivalent parts include MV1N5259B-1E3 (Microsemi) and 1N5259B136 (NXP). These share the 39 V Zener voltage and DO-35 package. Verify power dissipation ratings and tolerance specifications before substitution.