1N2840A

Overview

The Microchip Technology 1N2840A is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 110V with a tolerance of 10%. The device is rated for a maximum power dissipation of 50W and operates within a temperature range of -65°C to +175°C. Key electrical characteristics include a maximum dynamic impedance of 30 ohms at the test current and a knee impedance of 220 ohms. The component utilizes a flange mount package with a metal body, connecting the case to the anode terminal.

Feature Summary

• High power handling capability suitable for robust voltage regulation tasks
• Wide operating temperature range extending up to 175°C
• Flange mount construction for efficient thermal management

Applications

• Industrial power supply voltage regulation
• High-power protection circuits
• Voltage reference standards in industrial equipment

Procurement Notes

Verify the manufacturer source carefully as this part number is associated with multiple vendors including Microchip Technology and NXP/Motorola. Confirm the specific datasheet version matches your required tolerance and package specifications. Ensure the supplier provides official documentation confirming the 50W power rating and 110V Zener voltage parameters before finalizing procurement decisions.

Selection Notes

Select this component when high power dissipation and wide temperature operation are required. The flange mount package necessitates appropriate heatsinking infrastructure. Verify that the 110V breakdown voltage aligns with the circuit design requirements. Consider the 30-ohm dynamic impedance for precision regulation needs compared to lower-power alternatives.

Part Context

This component belongs to the general category of high-power Zener diodes used in industrial and commercial electronics. It serves as a critical element for maintaining stable voltage levels in high-current environments. The flange mount style distinguishes it from standard through-hole or surface-mount variants, indicating its use in applications requiring direct mounting to chassis or heat sinks for thermal stability.

Replacement Considerations

Cross-reference with other manufacturers' 50W 110V Zener diodes such as those from NXP or Motorola. Ensure replacement parts match the flange mount package dimensions and anode-connected case configuration. Verify equivalent dynamic impedance and temperature ratings to maintain circuit performance integrity.