1N5257B_T50A

Single Zener Diodes Overview

The onsemi 1N5257B_T50A is a single silicon planar Zener diode housed in a DO-35 glass axial package. It provides a nominal Zener voltage of 33 V with a tight tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to +200 °C. Key electrical characteristics include a test current of 3.8 mA, a maximum reverse leakage current of 100 nA, and a Zener impedance of 58 ohms.

Single Zener Diodes Feature Summary

• Maintains stable voltage regulation through low Zener impedance characteristics
• Ensures high reliability with low reverse leakage current specifications
• Supports high-temperature operation up to 200 °C for demanding environments

Single Zener Diodes Applications

• Voltage reference circuits requiring precise regulation
• Overvoltage protection stages in electronic systems
• Clamping applications for signal lines

Single Zener Diodes Procurement Notes

Verify the specific T50A suffix against official datasheets to confirm packaging details, as suffixes often denote tape-and-reel or ammo pack configurations rather than functional changes. Ensure compatibility with RoHS directives if required by the target application. Cross-reference manufacturer part numbers carefully to avoid confusion with standard bulk versions.

Single Zener Diodes Selection Notes

Select this component when a 33 V reference with ±5% accuracy is required in an axial glass package. Consider the 500 mW power rating and thermal derating requirements for the operating environment. Verify that the 58 ohm impedance meets the dynamic load requirements of the circuit design.

Single Zener Diodes Part Context

This part belongs to the 1N52-series of standard Zener diodes manufactured by onsemi (formerly Fairchild). The series offers various voltage options in the DO-35 package, providing a cost-effective solution for general-purpose voltage regulation tasks across consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

Compatible substitutes include the 1N5257B from other manufacturers such as Vishay or Taiwan Semiconductor, provided they meet the same 33 V, 500 mW, and DO-35 package specifications.