1N5257BTR

Single Zener Diodes Overview

The onsemi 1N5257BTR is a single-channel Zener diode with a nominal voltage of 30V and a maximum power dissipation of 500 mW. It utilizes the DO-35 through-hole package with two pins. The device features a 5% voltage tolerance, a test current of 4.2 mA, and a maximum Zener impedance of 49 Ω. Maximum reverse leakage current is specified at 100 nA. Operating temperatures range from -65 °C to +200 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation within a 5% tolerance band for precision circuit applications.
• Engineered for high thermal stability with an extended operating temperature range up to +200 °C.
• Features low reverse leakage current characteristics suitable for sensitive signal paths.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in electronic systems
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify the specific manufacturer part number against official onsemi documentation to confirm exact electrical parameters and package specifications. Ensure compatibility with required thermal management and mounting constraints before procurement.

Single Zener Diodes Selection Notes

Select this component when a 30V regulation point is required with moderate power handling capabilities. Consider the DO-35 package dimensions and through-hole mounting requirements during PCB layout design.

Single Zener Diodes Part Context

This component belongs to the standard 1N52 series of silicon planar Zener diodes manufactured by onsemi. These devices are widely used in general electronics for voltage clamping and reference applications due to their reliability and standardized form factor.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering 1N5257B equivalents. Verify that substitute parts match the 30V nominal voltage, 500mW power rating, and DO-35 package dimensions to ensure mechanical and electrical compatibility.