1N5245A (DO-35)

Single Zener Diodes Overview

The Microsemi 1N5245A is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 15 V with a ±10% tolerance (suffix A). Key electrical parameters include a maximum reverse current of 10 μA at 10 V, a Zener impedance of 16 Ω at IZK = 0.25 mA, and a positive temperature coefficient of +0.082 %/°C. The device operates within a temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-35 axial-lead construction
• Regulates voltage across broad operating current and temperature ranges
• Inherently radiation hard per MicroNote 050
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific suffix letter to confirm tolerance class; 'A' indicates ±10%, while 'B' denotes ±5%. Confirm RoHS compliance status by checking for the 'e3' suffix if required. Ensure the ordering prefix matches the intended screening level, as military variants require specific prefixes like MQ or MX.

Single Zener Diodes Selection Notes

Select this component when a standard 15 V reference is needed in an axial-lead form factor. Consider the positive temperature coefficient for thermal stability requirements. Verify that the 0.5 W power dissipation rating meets the circuit's steady-state power needs without excessive derating.

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 from 2.4 V to 200 V. Variants are available with tighter tolerances (C or D suffixes) or military screening levels via specific prefixes.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5245B for tighter ±5% tolerance or the 1N5245C/D for precision applications. Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package.