1N5257C-TR

Single Zener Diodes Overview

The Vishay 1N5257C-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial package. It provides a nominal Zener voltage of 33 V with a tight ±2 % tolerance, indicated by the 'C' suffix. The device operates at a test current of 3.8 mA and dissipates up to 500 mW. Key electrical parameters include a maximum reverse leakage current of 0.1 µA at 25 V, a typical dynamic resistance of 58 Ω at 3.8 mA, and a temperature coefficient of 0.092 %/K.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust performance
• Offers high precision with ±2 % Zener voltage tolerance
• Features glass encapsulation in an axial leaded package

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 ensure the required ±2 % tolerance specification is met. Confirm the '-TR' suffix indicates tape-and-reel packaging for automated assembly processes. Cross-reference the document number 85588 to access the latest technical specifications and dimensional drawings from the manufacturer.

Single Zener Diodes Selection Notes

Select this component when precise voltage regulation is critical due to its narrow manufacturing tolerance. The DO-35 package is suitable for through-hole mounting applications requiring standard signal handling capabilities. Ensure the operating junction temperature remains within the specified range to maintain stable thermal equilibrium during continuous operation.

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 wide Zener voltage range from 2.4 V to 75 V. The 1N5257 variant specifically targets the 33 V segment of this extensive lineup.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same family include the 1N5257B-TR, which offers a wider ±5 % tolerance, or the 1N5257-TAP, which utilizes an ammo-pack format instead of a reel.

Single Zener Diodes FAQ

What does the 'C' suffix indicate in the 1N5257C-TR ordering code?

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

What is the typical dynamic resistance of the 1N5257C-TR?

The typical dynamic resistance is 58 Ω, measured at the specific test current of 3.8 mA.