1N4621 TR TIN/LEAD

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4621 TR TIN/LEAD is a low-level silicon Zener diode designed for precision voltage regulation in through-hole applications. It features a DO-35 glass axial package and operates with a nominal Zener voltage of 3.6V at a test current of 250µA. The device provides a power dissipation rating of 500mW and maintains a tight voltage tolerance of ±5%. It exhibits a maximum reverse leakage current of 1µA and a Zener impedance of 1.5kΩ, ensuring stable performance across an operating temperature range from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Utilizes double slug type construction with metallurgical bonded hermetically sealed glass encapsulation for environmental stability.
• Engineered for low noise operation suitable for sensitive low-current circuits requiring precise reference voltages.
• Features high thermal endurance allowing continuous operation up to 200°C junction temperature.

Single Zener Diodes Applications

• Precision voltage reference sources in analog signal processing circuits
• Overvoltage protection stages in sensitive electronic instrumentation
• Biasing networks for low-noise amplifier configurations

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix matches the required termination finish, as tin/lead variants differ from lead-free equivalents. Confirm that the reel packaging aligns with automated assembly requirements. Ensure the component meets RoHS exemptions if applicable to the target market regulations. Cross-reference the manufacturer part number against updated datasheets to confirm electrical parameters have not changed due to manufacturing updates or obsolescence notices.

Single Zener Diodes Selection Notes

Select this component when a standard 3.6V regulation point is required within a through-hole design constraint. The 500mW power rating supports moderate current loads while maintaining thermal safety margins. Consider the high maximum operating temperature of 200°C for environments exceeding standard industrial limits. The low leakage current specification makes it preferable over higher-power alternatives where minimal quiescent drain is critical.

Single Zener Diodes Part Context

This component belongs to the 1N462x series of low-level Zener diodes manufactured by Central Semiconductor. These devices are characterized by their small signal capabilities and robust glass passivation. The series is widely utilized in consumer electronics and industrial control systems where reliable voltage clamping is necessary without the complexity of active regulation components.

Single Zener Diodes Replacement Considerations

Direct substitutes include the Microsemi 1N4621DUR-1E3 and generic 1N4621 variants from other manufacturers. Verify that replacement parts maintain the same 3.6V nominal voltage and 500mW power dissipation rating. Ensure the alternative package matches the DO-35 form factor for mechanical compatibility.