1N5342A/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5342A/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 5.6 V with a ±10% tolerance, indicated by the 'A' suffix. The device operates in a T-18 axial lead package and supports a test current of 220 mA. Key electrical characteristics include a maximum dynamic impedance of 1.0 Ohm and a maximum reverse leakage current of 1.0 µA. It withstands a maximum surge current of 400 A and maintains operation within an ambient temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for through-hole integration
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement instrumentation

Single Zener Diodes Procurement Notes

Verify the component origin carefully as the datasheet identifies Microsemi as the manufacturer while the model references Microchip Technology. Confirm RoHS compliance status via the e3 suffix if required. Check for specific military screening prefixes (MQ, MX, MV) if enhanced reliability standards are necessary for the application environment.

Single Zener Diodes Selection Notes

Select this component when a 5.6 V reference with ±10% tolerance is required in a 5-watt power dissipation class. Ensure adequate heat sinking is provided to maintain junction temperatures within limits, as steady-state power ratings depend on mounting conditions. Verify that the axial lead form factor fits the PCB layout constraints.

Single Zener Diodes Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. Different suffix letters identify specific voltage tolerances, with 'A' denoting ±10%. The series is JEDEC registered and available in various screening levels for military applications.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5342B (±5% tolerance) or 1N5342C (±2% tolerance). Surface mount equivalents such as SMBJ5342 or SMBG5342 are also available from the manufacturer.