1N2820B PBFREE

Overview

The 1N2820B PBFREE is a silicon Zener diode manufactured by Central Semiconductor Corp, designed for through-hole mounting in the TO-3 package. It provides a nominal Zener voltage of 24 V with a power dissipation rating of 50 W and a tolerance of ±5%. The device features a maximum forward voltage of 1.5 V at 10 A. It is RoHS compliant and operates within standard industrial temperature ranges.

Feature Summary

• High power dissipation capability of 50 watts
• Robust TO-3 through-hole metal case construction
• Precise 24 V regulation with ±5% tolerance

Applications

• High-power voltage regulation circuits
• Overvoltage protection systems
• Industrial power supply reference standards

Procurement Notes

Verify the specific datasheet version from Central Semiconductor to confirm exact thermal resistance values and mechanical dimensions. Ensure the TO-3 mounting hardware matches the required insulation class for your application. Confirm RoHS compliance status if restricted substances are a constraint.

Selection Notes

Select this component when high current handling and robust thermal performance are required. The TO-3 package offers superior heat dissipation compared to plastic packages. Verify that the circuit design can accommodate the physical size and mounting requirements of the metal case.

Part Context

This part belongs to the 1N28xx series of high-power Zener diodes produced by Central Semiconductor. These components are engineered for demanding environments where stable voltage reference and high energy absorption are critical. The series utilizes silicon planar technology for reliability.

Replacement Considerations

Cross-reference with other manufacturers' 50W TO-3 Zener diodes rated at 24V ±5%, such as those from Microsemi or Vishay. Ensure equivalent thermal characteristics and pinout compatibility before substitution.