1N5247B

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5247B is a single silicon unidirectional Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 17 V with a tolerance of 5%. The device is rated for a maximum power dissipation of 0.5 W and operates within a temperature range of -65 °C to +200 °C junction temperature. Packaged in the DO-35 axial through-hole format, it exhibits a maximum dynamic impedance of 19 Ω and a reverse leakage current of 100 nA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 17 V reference level
• Utilizes silicon construction for reliable unidirectional operation
• Supports high thermal performance with an extended operating temperature range

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 the specific manufacturer origin, as the 1N5247B designation is utilized by multiple producers including onsemi and Vishay. Confirm that the required package variant matches the intended board layout, specifically distinguishing between glass-encapsulated DO-35 and other available forms. Ensure compliance with project-specific environmental standards before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a standard 17 V regulation point is required in a through-hole configuration. The 0.5 W power rating suits low-current applications where higher dissipation is unnecessary. Consider the 5% tolerance for general regulation needs rather than precision instrumentation. Evaluate the axial lead form factor against available PCB space constraints during the design phase.

Single Zener Diodes Part Context

This component belongs to the widely recognized 1N52xx series of Zener diodes, which are standardized across the semiconductor industry. While originally associated with Fairchild Semiconductor, the JEDEC-style part number is now produced by various manufacturers such as onsemi and Vishay. This cross-manufacturer availability ensures consistent electrical characteristics despite differences in packaging or branding.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5247B manufactured by onsemi or Vishay, which share identical electrical specifications. Alternative packages like the hermetically sealed 1N5247BD2B.XRAY offer similar ratings but require different mounting considerations.