1N1355A

Overview

The Microchip Technology 1N1355A is a single Zener diode voltage regulator designed for high-power applications. It features a nominal Zener voltage of 15 V and a maximum power dissipation of 10 W. The device exhibits a maximum impedance (Zzt) of 2 Ohms, ensuring stable regulation characteristics under varying load conditions. It is housed in a DO-203AA (DO-4) stud mount package, which facilitates efficient thermal management through direct mounting to heat sinks or chassis structures.

Feature Summary

• High power handling capability with 10 W maximum dissipation rating
• Stable voltage regulation at 15 V nominal Zener voltage
• Low impedance characteristic of 2 Ohms maximum for improved regulation
• Robust stud mount construction for effective thermal transfer

Applications

• High-power voltage regulation circuits
• Industrial power supply protection
• Chassis-mounted voltage reference applications

Procurement Notes

Verify the specific manufacturer source, as the component is associated with multiple entities including Microchip Technology and IR. Confirm that the received unit matches the DO-203AA/DO-4 package style and stud mount configuration. Ensure the part number corresponds exactly to the 15 V, 10 W specification before integration into designs requiring precise thermal and electrical parameters.

Selection Notes

Select this component when a robust, high-power Zener diode is required for voltage clamping or regulation in industrial environments. The stud mount package is critical for applications where thermal dissipation exceeds the capacity of standard leaded packages. Consider the 15 V nominal voltage and 10 W power rating to ensure compatibility with the circuit's voltage and current requirements.

Part Context

The 1N1355A belongs to the family of single Zener diodes manufactured by Microchip Technology. It is categorized under discrete semiconductors, specifically diodes and rectifiers. The component utilizes the legacy DO-4 package designation, also known as DO-203AA, which is standard for high-power axial lead or stud-mount diodes. This packaging allows for secure mechanical attachment and efficient heat sinking.

Replacement Considerations

Aftermarket versions are available from suppliers such as Aftermarket IR Industrial Controls. Verify pinout compatibility and thermal resistance specifications when substituting with non-OEM parts to ensure equivalent performance in high-power applications.