1N5235BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5235BUR-1 is a surface mount Zener voltage regulator diode housed in a hermetically sealed DO-213AA (MELF) package. It provides a nominal Zener voltage of 6.8 V with a test current of 20 mA and a maximum power dissipation of 0.5 W. The device features a dynamic impedance of 5 Ohms at the test current, a reverse leakage current of 3 µA at 5 V, and a positive temperature coefficient of +0.05 %/°C. It operates within a junction and storage temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Radiation-hardened electronic systems
• High-reliability surface mount circuit designs

Single Zener Diodes Procurement Notes

Verify the specific tolerance suffix required for the application, as the base part number indicates a standard 5% tolerance. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are available on commercial grade only. Ensure the ordering nomenclature matches the desired reliability level and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a ruggedized surface mount solution is required for precision voltage reference applications. The DO-213AA package offers a direct footprint equivalent to the axial-leaded JEDEC registered series while providing enhanced mechanical stability. Consider the positive temperature coefficient for thermal compensation requirements in the target circuit design.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener voltage regulators. The series covers a voltage range from 2.4 V to 200 V, offering various tolerance options including 1%, 2%, 5%, and 10%. It serves as the surface mount counterpart to the traditional axial-leaded components, maintaining similar electrical performance in a compact form factor.

Single Zener Diodes Replacement Considerations

The 1N5235B-1 is the axial-leaded equivalent within the same product family. Verify pinout compatibility and thermal derating curves when transitioning between package types.