1N5240A/TR

Single Zener Diodes Overview

The Microchip Technology 1N5240A/TR is a single silicon Zener diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-lead package. It provides a nominal Zener voltage of 10 V with a standard tolerance of ±10%, indicated by the 'A' suffix. The device dissipates up to 0.5 watts at 25°C and operates within a temperature range of -65°C to +175°C. Electrical characteristics include a maximum reverse current of 30 µA at 8 V, a Zener impedance of 17 Ω at 0.25 mA, and a positive voltage temperature coefficient of +0.075 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Capable of regulating voltage across a broad operating current and temperature range
• Inherently radiation hard per MicroNote 050
• Minimal capacitance suitable for high-frequency applications

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable reference voltages
• Overvoltage protection in electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'TR' suffix indicates tape and reel packaging compliant with EIA-296 standards. Confirm the 'e3' suffix denotes RoHS compliance if required. Ensure the prefix does not indicate military screening levels unless specifically needed. Cross-reference the part number against the manufacturer's latest documentation to confirm current production status and electrical tolerances.

Single Zener Diodes Selection Notes

Select this component when a 10 V Zener reference with ±10% tolerance is required in an axial-lead package. Consider the positive temperature coefficient for thermal compensation needs. Evaluate the power derating curve for ambient temperatures exceeding 25°C. Verify that the 0.5 W power dissipation rating meets the circuit's steady-state requirements. Compare leakage current limits against sensitive input stages.

Single Zener Diodes Part Context

This device belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators manufactured by Microsemi Scottsdale Division. The series offers a wide selection of voltages from 2.4 to 200 volts. Standard tolerances are available with 'A' (±10%) or 'B' (±5%) suffixes. Tighter tolerances are offered with 'C' or 'D' suffixes. The series includes options for internal bonds and various military screening prefixes.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5239A and 1N5241A for adjacent voltage ratings. Surface mount equivalents are available as MLL5240A in the DO-213AA MELF style package. Devices with tighter tolerances can be identified by C or D suffixes. Military screened versions utilize MQ, MX, MV, or MSP prefixes.