1N5248BE3/TR

Single Zener Diodes Overview

The Microchip Technology 1N5248BE3/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 ±5% tolerance, indicated by the 'B' 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 temperature coefficient of +0.085 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for reliable operation
• Regulates voltage across a broad operating current and temperature range
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'e3' suffix indicates RoHS compliance, while the 'TR' suffix confirms tape and reel packaging. Ensure the component meets the specific JEDEC registration requirements for your design. Confirm the manufacturer details align with the official datasheet documentation before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 18 V Zener reference with tight 5% tolerance is required. The DO-35 package supports through-hole mounting. Consider the thermal resistance and power derating curves if operating near the maximum dissipation limit. Verify that the positive temperature coefficient aligns with the circuit's stability requirements.

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 B or A suffixes, while tighter tolerances use C or D suffixes. The series includes options for military screening levels via specific prefixes.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5247B and 1N5249B. These share the same package and power rating but differ in nominal Zener voltage. Verify that the replacement part number matches the exact voltage and tolerance requirements of the original design.

Single Zener Diodes FAQ

What does the 'B' suffix indicate on the 1N5248BE3/TR?

The 'B' suffix identifies the device as having a standard voltage tolerance of plus or minus 5%.

Is the 1N5248BE3/TR sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD, meeting MIL-STD-750 Method 1020 standards.