1N5989B

Single Zener Diodes Overview

The onsemi 1N5989B is a silicon Zener diode housed in a DO-35 glass axial package. It provides a nominal Zener voltage of 3.6V with a tolerance of 5%. The device supports a maximum power dissipation of 0.5W and operates within a temperature range of -65°C to +200°C. Key electrical characteristics include a maximum dynamic impedance of 90 Ω at the test current. The component is RoHS compliant, lead-free, and designed for unidirectional voltage regulation applications.

Single Zener Diodes Feature Summary

• Utilizes a DO-35 glass axial package for robust environmental protection
• Provides stable voltage regulation with 5% tolerance accuracy
• Supports high junction temperatures up to 200°C
• Features low forward voltage drop and negligible switching losses

Single Zener Diodes Applications

• General purpose voltage regulation circuits
• Voltage reference sources in analog systems
• Over-voltage protection stages
• Clamping applications in signal processing

Single Zener Diodes Procurement Notes

Verify the manufacturer marking and date code against official onsemi documentation to ensure authenticity. Confirm that the DO-35 package matches the required footprint and lead configuration for your PCB design. Check for RoHS compliance labels if environmental regulations apply to your assembly process. Ensure storage conditions maintain moisture sensitivity level standards before soldering.

Single Zener Diodes Selection Notes

Select this component when a 3.6V regulation point is required in an axial through-hole layout. The DO-35 package offers higher power handling than surface-mount alternatives like SOD-123. Consider the 90 Ω dynamic impedance for noise-sensitive designs. Verify thermal derating requirements if operating near the 200°C limit.

Single Zener Diodes Part Context

The 1N5989B belongs to the standard 1N59xx series of Zener diodes, widely used in industrial and consumer electronics. This series is characterized by its glass passivation and axial leaded construction, providing reliability in harsh environments. The 3.6V variant is commonly used for low-voltage reference and protection tasks where precise clamping is necessary.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other manufacturers' 1N5989B parts or equivalent 3.6V Zener diodes in DO-35 packages such as those from Vishay or Littelfuse. Ensure replacement parts match the 5% tolerance and 0.5W power rating. Verify pinout compatibility and thermal performance specifications before integration.