1N5256A-1

Single Zener Diodes Overview

The Microchip Technology 1N5256A-1 is a single Zener diode designed for voltage regulation applications. It features a nominal reference voltage of 30 V with a tolerance of ±10%. The device has a maximum power dissipation of 0.5 W and utilizes silicon as the semiconductor material. It is housed in a DO-204AH (DO-35) glass axial-lead package, providing two terminals. The component operates within a temperature range of -65 °C to 175 °C and exhibits a maximum reverse current of 0.1 µA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 30 V reference level
• Constructed with silicon elements in a hermetically sealed glass axial-lead package
• Capable of handling up to 0.5 W of power dissipation
• Designed for high-temperature operation extending to 175 °C

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection systems

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the '-1' suffix, which denotes military screening levels or specific reliability standards distinct from commercial variants. Confirm package integrity and lead finish specifications against project requirements. Ensure compliance with RoHS directives if applicable, noting that some military-grade variants may be non-compliant. Cross-reference datasheets from authorized distributors to confirm current manufacturing status and availability.

Single Zener Diodes Selection Notes

Select this component when a precise 30 V regulation point is required in a through-hole design. The DO-35 package suits standard PCB layouts. Consider the ±10% tolerance for budgeting voltage accuracy. Evaluate thermal management needs given the 0.5 W rating. Compare against tighter tolerance options like the 1N5256B series if higher precision is necessary for the application.

Single Zener Diodes Part Context

This part belongs to the popular 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 to 200 volts. These devices are widely used in general-purpose electronics and industrial equipment requiring reliable voltage clamping or regulation in compact axial packages.

Single Zener Diodes Replacement Considerations

The 1N5256A is the commercial equivalent. For tighter tolerances, consider the 1N5256B (±5%). The 1N5256D offers ±1% tolerance. Other manufacturers produce pin-compatible equivalents such as STMicroelectronics 1N5256A/TR.