1N5248A/TR

Single Zener Diodes Overview

The Microchip Technology 1N5248A/TR is a 0.5 W glass axial-lead Zener diode in the DO-35 (DO-204AH) package. It provides an 18 V nominal Zener voltage with a ±10% tolerance, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 100 µA at 10 V. Electrical characteristics include a test current of 7.0 mA, a maximum Zener impedance of 21 Ω at 0.25 mA, and a positive voltage temperature coefficient of +0.085 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features hermetically sealed glass axial-lead construction for durability
• Inherently radiation hard per MicroNote 050 specifications

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required tolerance and packaging configuration. Confirm RoHS compliance status if applicable, as standard versions may differ from e3 variants. Ensure the TR suffix indicates tape and reel packaging consistent with automated assembly requirements. Cross-reference the specific manufacturer prefix against datasheet screening options.

Single Zener Diodes Selection Notes

Select this component when a 18 V Zener voltage with ±10% tolerance is required in a DO-35 package. Consider the positive temperature coefficient for thermal stability analysis. Verify power dissipation derating curves for high-temperature environments. Ensure the forward voltage rating meets circuit requirements under reverse bias conditions.

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. Standard tolerances are available with A or B suffixes, while tighter tolerances use C or D suffixes. The series includes JEDEC registered types and optional military screening prefixes.

Single Zener Diodes Replacement Considerations

Equivalent parts within the 1N5221-1N5281B series share similar electrical profiles but vary by voltage and tolerance. Verify pinout compatibility and package dimensions before substitution. Check datasheets for differences in thermal resistance and maximum ratings.