1N4477 TR TIN/LEAD

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4477 TR TIN/LEAD is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 33 V with a ±5% tolerance and a maximum power dissipation of 1.5 W. The device utilizes a DO-41 axial through-hole package and operates within a temperature range of -65°C to +200°C junction temperature. Key electrical characteristics include a Zener impedance of 25 ohms and a test current of 43 mA. The component is supplied in tape and reel packaging and is marked as non-compliant with RoHS standards.

Single Zener Diodes Feature Summary

• High-performance silicon construction for reliable voltage regulation
• Wide operating temperature range suitable for demanding environments
• Axial leaded package design for through-hole mounting

Single Zener Diodes Applications

• Automotive voltage regulation circuits
• Industrial control system protection
• Commercial power supply reference voltages

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix and plating type, as Central Semiconductor offers variations such as tin/lead or lead-free options. Confirm that the procurement matches the required tape and reel packaging format. Ensure compliance requirements are met, noting that this specific variant may not be RoHS compliant. Cross-reference the manufacturer part number with distributor codes to avoid substitution errors during sourcing.

Single Zener Diodes Selection Notes

Select this component when a 33 V Zener voltage with 1.5 W power handling is required in an axial package. Consider the 25 ohm impedance and 43 mA test current for circuit stability. Evaluate the wide thermal range for high-temperature operation needs. Verify that the non-RoHS status aligns with project regulatory constraints before finalizing the design choice.

Single Zener Diodes Part Context

This part belongs to the Central Semiconductor 1N44xx series of high-performance Zener diodes. These components are engineered for robust voltage regulation in harsh conditions. The series typically includes various voltage ratings sharing similar physical and thermal characteristics. The 1N4477 specifically addresses the 33 V requirement within this established product line.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers: JANTX1N4477DUS/TR (Microchip/Microsemi). Verify pinout compatibility and electrical parameter equivalence before substitution.