1N4621 TR PBFREE

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4621 TR PBFREE is a silicon Zener diode designed for low leakage, low current, and low noise applications. It operates within the DO-35 axial leaded package with a maximum power dissipation of 250 mW at 25°C ambient temperature. The nominal Zener voltage is 3.6 V, with a tolerance range of 3.420 V to 3.780 V. Key electrical parameters include a test current of 250 µA, a maximum Zener impedance of 7.5 Ω, and a maximum reverse current of 2.0 µA at 2.0 V. The device supports junction temperatures from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Engineered specifically for low leakage and low noise performance in sensitive circuits
• Provides stable voltage regulation with tight 5% tolerance across the operating temperature range
• Features a robust DO-35 axial leaded package suitable for through-hole mounting

Single Zener Diodes Applications

• Low noise voltage reference circuits
• Precision low current regulation applications
• Sensitive analog signal conditioning stages

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required plating configuration. The PBFREE designation indicates lead-free plating compliance. Confirm the TR suffix aligns with the specific packaging requirements for your assembly process. Ensure the component meets RoHS standards if applicable to your manufacturing environment. Cross-reference the manufacturer's datasheet for any recent updates to mechanical or environmental specifications before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when low noise density is critical for circuit performance. The 250 mW power rating suits low-current applications where higher power devices are unnecessary. Consider the DO-35 package constraints regarding board space and thermal management. Verify that the 3.6 V nominal voltage aligns with system requirements. Evaluate the 7.5 Ω impedance against load regulation needs.

Single Zener Diodes Part Context

This part belongs to the 1N4614 through 1N4627 series of low noise silicon Zener diodes. The series covers voltages from 1.8 V to 6.2 V, all sharing similar low leakage characteristics. The 1N4621 specifically targets the 3.6 V segment. Higher voltage options in this family may exhibit increased noise density.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 3.6 V nominal Zener voltage, 250 mW power rating, and DO-35 package. Verify that substitute components meet the same low noise and low leakage specifications. Check for equivalent impedance and reverse current limits to ensure circuit compatibility.