1N5251

Single Zener Diodes Overview

The SMC Diode Solutions 1N5251 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 22V with a standard tolerance of 10%. The device is rated for a DC power dissipation of 0.5W and operates within a junction temperature range of -65°C to +175°C. It utilizes a DO-35 glass axial-leaded package, providing an isolated case connection suitable for through-hole mounting in electronic circuits requiring stable reference voltages.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using silicon Zener breakdown characteristics
• Constructed with a hermetically sealed glass axial-leaded package for environmental protection
• Features low reverse leakage current and low noise characteristics typical of the series

Single Zener Diodes Applications

• Voltage reference circuits in precision measurement equipment
• Overvoltage protection stages in power supply inputs
• Clamping applications in signal conditioning paths

Single Zener Diodes Procurement Notes

Verify that the specific procurement lot matches the required tolerance class, as the base part number may correspond to different suffix variants with varying accuracy levels. Confirm the package style aligns with the target PCB footprint, ensuring compatibility with the DO-35 axial lead configuration. Check for any specific military or commercial screening requirements if the application demands high reliability standards beyond standard industrial specifications.

Single Zener Diodes Selection Notes

Select this component when a 22V regulation point is required with moderate power handling capabilities. Ensure the circuit design accounts for the thermal derating curve above 50°C to maintain the 0.5W rating. Compare the dynamic impedance specifications against other series members if tighter voltage stability under varying current conditions is necessary for the specific load profile.

Single Zener Diodes Part Context

This component belongs to the widely used 1N52xx series of 0.5W Zener diodes. These devices are standardized JEDEC types available from multiple manufacturers. The series covers a broad voltage range, typically from 2.4V to 200V, offering a common solution for general-purpose voltage regulation tasks across various industries.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5251 parts for pin-compatible replacements. Verify that alternative sources offer identical DO-35 packaging and matching electrical tolerances to ensure direct interchangeability without circuit modification.