1N5263B

Single Zener Diodes Overview

The Microchip Technology 1N5263B is a 500 mW glass axial-lead Zener diode housed in a DO-35 package. It provides a nominal Zener voltage of 56 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 100 µA at 43 V. Electrical characteristics include a test current of 2.2 mA, a maximum Zener impedance of 150 Ohms, and a voltage temperature coefficient of +0.096 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Constructed with a hermetically sealed glass body for durability

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as historical production involved Microsemi and subsequent transitions to Microchip Technology. Confirm RoHS compliance status by checking for the e3 suffix if required. Ensure the ordering part number matches the exact tolerance and packaging specifications needed for the design.

Single Zener Diodes Selection Notes

Select this component when a 56 V breakdown voltage with tight ±5% tolerance is required. The DO-35 glass package suits applications needing robust thermal performance up to 175°C. Consider the positive temperature coefficient for designs where voltage stability must account for thermal variations in the operating environment.

Single Zener Diodes Part Context

This device belongs to the widely used 1N5221 through 1N5281B series of 0.5 W Zener regulators. The series offers an extensive selection of voltages from 2.4 V to 200 V. The 1N5263B specifically addresses mid-range voltage requirements within this standardized JEDEC registered lineup.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package. Other manufacturers may offer direct pin-compatible replacements, but electrical parameters should be cross-referenced carefully.