1N5249B

Single Zener Diodes Overview

The onsemi 1N5249B is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 19 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +200°C. Key electrical parameters include a maximum reverse leakage current of 100 nA at 14 V, a forward voltage of 1.2 V at 200 mA, and a maximum Zener impedance of 23 Ohms. It is housed in a DO-35 axial through-hole package.

Single Zener Diodes Feature Summary

• Planar die construction ensures stable performance and reliability under varying thermal conditions.
• Capable of handling up to 500 mW power dissipation for robust voltage regulation.
• Designed for automated assembly processes to facilitate efficient manufacturing integration.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the part status as obsolete or discontinued before procurement planning. Ensure replacement components meet identical electrical ratings and mechanical dimensions. Validate compliance with relevant environmental directives such as RoHS if required for the specific application context.

Single Zener Diodes Selection Notes

Select this component when a 19 V regulation point is required in a through-hole configuration. Consider the 500 mW power rating to ensure adequate thermal management. Evaluate the ±5% voltage tolerance against circuit precision requirements. Verify that the operating temperature range aligns with the intended environmental conditions of the final assembly.

Single Zener Diodes Part Context

This component belongs to the 1N52 series of silicon Zener diodes manufactured by onsemi. The series offers various voltage options within a standardized DO-35 package format. These devices are engineered for general-purpose voltage regulation and protection duties in discrete semiconductor applications.

Single Zener Diodes Replacement Considerations

Direct substitutes include Central Semiconductor Corp 1N5249B TR PBFREE. Similar alternatives from Microchip Technology include 1N5249A and 1N5539B. Verify electrical compatibility before substitution due to potential differences in impedance or leakage characteristics.