1N5256A/TR

Single Zener Diodes Overview

The Microchip Technology 1N5256A/TR is a 30 V Zener diode housed in a DO-35 glass axial-lead package. It features a nominal voltage tolerance of ±10% (suffix A) and operates within a temperature range of -65°C to +175°C. The device dissipates up to 500 mW at 25°C, with a maximum reverse current of 100 µA at 10 V and a Zener impedance of 49 Ω at the test current of 4.2 mA. The TR suffix indicates tape and reel packaging compliant with EIA-296 standards.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance for high-frequency applications
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Power supply regulation

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the required tape and reel packaging format rather than bulk quantities. Confirm the 'A' suffix aligns with the necessary ±10% voltage tolerance specification. Ensure the component meets RoHS compliance requirements if applicable to your manufacturing process. Cross-reference the manufacturer's datasheet for any specific handling or storage guidelines associated with the axial-lead glass package.

Single Zener Diodes Selection Notes

Select this component when a 30 V breakdown voltage with ±10% tolerance is required in a compact DO-35 package. Consider the 500 mW power dissipation limit and ensure adequate thermal management on the PCB. Verify that the low capacitance characteristic suits the intended signal integrity needs. Check if the standard axial lead configuration fits the board layout constraints compared to surface mount alternatives.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V. These devices are JEDEC registered and available in various screening levels and tolerance options. The DO-35 package provides flexible axial-lead mounting terminals suitable for through-hole assembly.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5256A variants in the DO-35 package. Surface mount equivalents like MLL5256A are available in the DO-213AA MELF style. Devices with tighter tolerances can be identified by C or D suffixes.