1N5249C-TR

Single Zener Diodes Overview

The Vishay 1N5249C-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial leaded package. It provides an 18 V nominal Zener voltage with a ±2% tolerance, as indicated by the 'C' suffix. 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 100 nA at 14 V and a typical dynamic resistance of 21 Ω at a test current of 7 mA.

Single Zener Diodes Feature Summary

• Precision voltage regulation achieved through a tight ±2% Zener voltage tolerance
• High thermal stability across a wide operating temperature range
• Low forward voltage drop for efficient circuit integration

Single Zener Diodes Applications

• Voltage stabilization
• Reference voltage generation
• Overvoltage protection circuits

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the 'C' suffix to confirm the ±2% tolerance specification. Ensure the '-TR' suffix matches the required reel packaging format. Cross-reference the document number 85588 to access the latest electrical parameters and mechanical dimensions before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when precise voltage regulation is critical due to its tighter manufacturing tolerances compared to standard variants. The DO-35 package supports through-hole mounting, making it suitable for general-purpose printed circuit board designs requiring reliable axial lead connections.

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 Zener voltage range from 2.4 V to 75 V, providing designers with standardized options for various reference and regulation applications.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same family include the 1N5249B-TR, which offers a wider ±5% tolerance. Other Vishay packages such as MiniMELF or SOT-23 may be considered if space constraints require a different form factor.

Single Zener Diodes FAQ

What does the 'C' suffix indicate in the 1N5249C-TR designation?

The 'C' suffix specifies that the Zener voltage has a tighter tolerance of ±2%, compared to the standard ±5% tolerance found in parts with a 'B' suffix.

What is the maximum power dissipation rating for this diode?

The maximum power dissipation is 500 mW, measured under conditions of thermal equilibrium where the leads are maintained at a constant temperature.