1N5250

Single Zener Diodes Overview

The SMC Diode Solutions 1N5250 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 20V with a maximum power dissipation of 500mW (0.5W). The device utilizes a glass axial-lead DO-35 package, corresponding to JEDEC code DO-204AH. It operates in a unidirectional configuration and is rated for through-hole mounting. Key electrical characteristics include a knee impedance of up to 600 Ω and a maximum reverse leakage current of 0.1 µA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a 20V Zener breakdown characteristic
• Constructed with a hermetically sealed glass axial-lead DO-35 package
• Capable of handling 500mW power dissipation for standard regulator circuits

Single Zener Diodes Applications

• Voltage reference circuits requiring 20V stability
• General-purpose voltage regulation in low-power electronics
• Clamping and protection stages in signal conditioning paths

Single Zener Diodes Procurement Notes

Verify the specific tolerance suffix (e.g., B, C) required for your design, as standard 1N5250 parts often vary between 5% and 10% Zener voltage tolerances. Confirm that the DO-35 glass axial package aligns with your PCB footprint and assembly process. Ensure the 500mW power rating is sufficient for your thermal environment without additional heat sinking. Check RoHS compliance status if environmental regulations apply to your manufacturing facility.

Single Zener Diodes Selection Notes

Select this component when a fixed 20V reference or regulation point is needed in a compact axial form factor. The 500mW rating suits low-current applications where higher power devices are unnecessary. Consider the DO-35 package constraints regarding board space and lead bending radius. Evaluate the knee impedance specification if precise regulation at low currents is critical for your circuit performance.

Single Zener Diodes Part Context

This part belongs to the widely recognized 1N52xx series of Zener diodes, which offers a broad range of voltage values from approximately 2.4V to 200V. These components are industry-standard replacements for older military and commercial designs. The 1N5250 specifically fills the 20V niche within this extensive lineup, providing a reliable solution for decades of electronic design practices involving simple shunt regulation.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N5250 variants such as those from Microsemi (MX1N5250C) or ROHM (1N5250BT), provided the tolerance and package match. Generic equivalents like BZX55C20 may be used if the DO-35 package is compatible. Verify that any replacement maintains the 500mW power rating and similar knee impedance characteristics.