1N4703

Overview

The Microchip Technology 1N4703 is a silicon planar Zener diode designed for voltage regulation applications. It operates within the JEDEC registered 1N4678 through 1N4717 series and features an internal metallurgical bond for reliability. The device typically provides a nominal Zener voltage of 16V with a standard power dissipation rating of 500mW. Standard voltage tolerance is ±5%, although tighter tolerances of 2% and 1% are available upon request. It utilizes a DO-35 axial leaded package suitable for through-hole mounting.

Feature Summary

• JEDEC registered component ensuring standardized performance characteristics
• Internal metallurgical bond construction for enhanced structural integrity
• Silicon planar technology for consistent voltage regulation
• Availability of tighter voltage tolerances beyond standard specifications

Applications

• Voltage regulation in electronic circuits
• Reference voltage generation
• Overvoltage protection

Procurement Notes

Verify the specific manufacturer source, as the 1N4703 designation is used by multiple vendors including Central Semiconductor and Micro Commercial Components. Confirm that the required voltage tolerance matches the standard ±5% or if tighter 1%/2% variants are needed. Ensure the package type corresponds to the DO-35 form factor and validate the operating temperature range against application requirements before procurement.

Selection Notes

Select this component when a standard 16V Zener reference is required in a compact axial package. Consider the availability of tighter tolerance versions if circuit precision demands exceed the standard ±5% specification. Verify compatibility with through-hole assembly processes and ensure the 500mW power rating suffices for the expected current levels in the design.

Part Context

This part belongs to the widely recognized 1N47xx series of Zener diodes, which are industry-standard components for low-power voltage regulation. The 1N4703 specifically targets the 16V breakdown region within this family. Its registration under JEDEC standards facilitates broad adoption across various electronic industries requiring reliable, low-cost voltage references.

Replacement Considerations

Cross-reference with other manufacturers' 1N4703 equivalents such as those from Central Semiconductor or Micro Commercial Components. Ensure pinout and package dimensions match the DO-35 specification. Verify that alternative sources meet the same electrical parameters, particularly the 16V Zener voltage and 500mW power dissipation ratings.