1N5249B-T

Single Zener Diodes Overview

The Vishay 1N5249B-T is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial leaded package. It provides a nominal Zener voltage of 19 V with a standard tolerance of ±5%. The device dissipates up to 500 mW at thermal equilibrium and operates within a junction temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 14 V, a dynamic resistance of 23 Ω at a test current of 6.6 mA, and a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Provides stable DC reference voltages across a wide operating temperature range
• Features low reverse leakage current for efficient circuit operation

Single Zener Diodes Applications

• Voltage stabilization
• DC voltage reference circuits
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering code suffix against the manufacturer's official documentation to confirm packaging details. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability of the semiconductor material.

Single Zener Diodes Selection Notes

Select this component when a precise 19 V reference is required in through-hole designs. Consider the ±5% tolerance for general applications where tighter precision is not critical. Evaluate the 500 mW power dissipation limit relative to ambient temperatures to ensure safe thermal operation without external heat sinking.

Single Zener Diodes Part Context

This part belongs to the 1N5221 to 1N5267 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a broad voltage range from 2.4 V to 75 V, utilizing the standardized DO-35 axial package. This family is designed for general-purpose voltage regulation tasks in consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5249 equivalents. Verify that substitute parts match the 19 V nominal voltage, 500 mW power rating, and DO-35 package dimensions to ensure mechanical and electrical compatibility.