1N5256B

Single Zener Diodes Overview

The onsemi 1N5256B is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tolerance of ±5%. The device operates in the DO-35 axial leaded glass package, suitable for through-hole mounting. Key electrical characteristics include a maximum power dissipation of 500 mW and a Zener impedance of 49 Ohms at a test current of 4.2 mA. The component supports an operating temperature range from -65 °C to +200 °C, with a maximum reverse leakage current of 100 nA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using epitaxial planar die construction within a hermetically sealed glass package.
• Features double slug type construction to ensure high stability and low noise performance.
• Offers robust thermal management capabilities allowing operation up to 200 °C junction temperature.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 30 V regulation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source when ordering, as the 1N5256B designation is licensed across multiple producers including Microchip and Vishay. Confirm that the received component matches the required package style and tolerance grade. Ensure compliance with project specifications regarding hermetic sealing if environmental resistance is critical. Cross-reference datasheets from different suppliers to confirm identical electrical parameters before final integration.

Single Zener Diodes Selection Notes

Select this component for designs requiring a standard 30 V reference in a compact axial package. The wide operating temperature range makes it suitable for harsh environments. Consider the 5% voltage tolerance when designing precision circuits. The DO-35 form factor allows for easy manual or automated assembly. Evaluate the 500 mW power rating against expected surge currents to ensure adequate safety margins during transient events.

Single Zener Diodes Part Context

This part belongs to the widely recognized 1N52xx series of Zener diodes, originally standardized by JEDEC. The 'B' suffix typically denotes a ±5% voltage tolerance. The series is known for its reliability in general-purpose voltage regulation tasks. Multiple manufacturers produce equivalent parts under this number, ensuring broad availability and interchangeability in standard electronic designs.

Single Zener Diodes Replacement Considerations

Direct substitutes include 1N5256B from Microchip Technology, Vishay General Semiconductor, and Rectron Semiconductor. Verify that replacement units maintain the same DO-35 package dimensions and 500 mW power rating. Check for any differences in hermetic sealing requirements if the application demands strict environmental isolation.