1N5249B_T50A

Single Zener Diodes Overview

The onsemi 1N5249B_T50A is a single silicon Zener diode housed in the DO-35 axial through-hole package. It provides 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 characteristics 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.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation via planar die construction for consistent performance.
• Features low reverse leakage current to minimize power loss in off-state conditions.
• Designed for automated assembly processes with solderable terminals compliant with industry standards.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 19 V levels.
• Overvoltage protection for sensitive electronic components.
• General-purpose clipping and clamping applications in signal processing.

Single Zener Diodes Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the specific suffix matches the required packaging format. Ensure compatibility with existing thermal management designs due to the 500 mW power rating. Validate that the operating temperature range meets the environmental requirements of the final assembly.

Single Zener Diodes Selection Notes

Select this component when a standard 19 V regulation point is needed in a through-hole design. Consider the 23 Ohm impedance for dynamic load variations. Evaluate the ±5% tolerance against circuit precision requirements. Compare the DO-35 footprint constraints with available board space.

Single Zener Diodes Part Context

This part belongs to the 1N52 series of silicon Zener diodes manufactured by onsemi. The series covers a wide voltage range from 2.4 V to 75 V using a consistent DO-35 glass package. These devices are designed for general-purpose voltage regulation and protection tasks across industrial and consumer electronics.

Single Zener Diodes Replacement Considerations

Direct substitutes include Central Semiconductor Corp 1N5249B TR PBFREE. Similar alternatives from Microchip Technology include 1N5249A and 1N5539B. Verify pinout and electrical parameters before substitution.