1N2829A

Overview

The Microchip Technology 1N2829A is a high-power Zener voltage regulator diode designed for robust industrial and medical applications. It features a nominal breakdown voltage of 47V with a ±10% tolerance, ensuring precise regulation. The component supports a maximum power dissipation of 50W and operates with a test current of 270mA. Housed in a durable TO-3 (TO-204AD) through-hole package, it exhibits an impedance of 5 Ohms. This silicon-based device is suitable for demanding environments requiring reliable voltage stabilization.

Feature Summary

• High power handling capability of 50W for stable operation under significant load conditions
• Precise voltage regulation with a nominal 47V breakdown and tight ±10% tolerance
• Robust TO-3 through-hole construction for secure mounting and thermal management

Applications

• Industrial control systems requiring stable reference voltages
• Medical equipment needing reliable power supply regulation
• General-purpose voltage regulation circuits in heavy-duty electronics

Procurement Notes

Verify the specific manufacturer lot and date code upon receipt to ensure compliance with project timelines. Confirm that the TO-3 package dimensions match your PCB footprint requirements exactly. Check for any RoHS or REACH compliance documentation if required by your regional regulations. Ensure proper handling procedures are followed due to the through-hole nature and potential thermal stress during installation.

Selection Notes

Select this component when a high-power, low-voltage Zener diode is required for critical regulation tasks. The 50W rating allows for effective heat dissipation without excessive external cooling in many cases. Consider the TO-3 package size constraints during mechanical design. The 47V nominal value should be validated against the specific circuit's reverse bias requirements to prevent overvoltage stress on downstream components.

Part Context

The 1N2829A belongs to the family of high-power Zener diodes manufactured by Microchip Technology. These devices are engineered for durability and long-term stability in harsh operating conditions. Unlike lower-power signal diodes, this series is built to handle substantial energy loads, making it a standard choice for power supply protection and regulation modules in professional-grade hardware.

Replacement Considerations

Direct substitutes must match the 50W power rating, 47V nominal voltage, and TO-3 package. Verify equivalent impedance and test current specifications to maintain circuit performance. Cross-reference with other manufacturers' high-power Zener lines, ensuring thermal characteristics align with the original design intent.