1N4623 TR TIN/LEAD

Overview

The Central Semiconductor Corp 1N4623 TR TIN/LEAD is a silicon Zener diode designed for voltage regulation and reference applications. It features a nominal Zener voltage of 4.3 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within a junction temperature range up to 175°C. Packaged in the DO-35 axial through-hole format, it exhibits a maximum dynamic impedance of 1600 Ohms and a forward voltage drop of 1.1 V at 200 mA. Reverse leakage current is specified at 4 µA when tested at 2 V.

Feature Summary

• Provides stable voltage regulation using a 4.3 V Zener breakdown characteristic suitable for precision reference circuits.
• Constructed with a glass-encapsulated DO-35 axial package to support reliable through-hole mounting on printed circuit boards.
• Engineered with high thermal stability allowing operation at elevated junction temperatures up to 175°C.

Applications

• Voltage regulation in low-power electronic circuits
• Precision voltage reference sources
• Overvoltage protection stages

Procurement Notes

Verify that the specific ordering suffix matches the required lead-free tin-lead plating and reel packaging configuration. Confirm the component status as discontinued or obsolete before finalizing design specifications. Ensure compatibility with existing assembly processes for DO-35 axial components. Cross-reference datasheet parameters against application requirements to validate performance margins under varying thermal conditions.

Selection Notes

Select this component when a standard 4.3 V Zener reference is required in a through-hole form factor. The 500 mW power rating supports moderate current loads without excessive heat generation. Verify that the ±5% voltage tolerance meets the circuit's accuracy requirements. Consider the 1600 Ohm dynamic impedance for noise-sensitive applications where higher impedance may impact regulation quality.

Part Context

This part belongs to the 1N4623 series of small-signal Zener diodes manufactured by Central Semiconductor Corp. It shares electrical characteristics with industry-standard equivalents but utilizes specific manufacturing processes and packaging configurations unique to the supplier. The DO-35 package is a common axial leaded format widely used in general-purpose electronics.

Replacement Considerations

Direct substitutes include the 1N4623-1E3 from Microchip Technology and the 1N749A BK PBFREE from Central Semiconductor Corp. These alternatives offer identical electrical specifications and pinout compatibility for direct replacement in existing designs.