1N5342B/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5342B/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 6.8 V and ±5% tolerance. It operates in the -65°C to +150°C range and features a T-18 axial lead package. The device has a maximum dynamic impedance of 1.0 ohms, a test current of 175 mA, and a maximum reverse leakage current of 10 µA at 3.0 V. The TR12 suffix indicates tape and reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole integration

Single Zener Diodes Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• High current applications with adequate heat sinking
• General purpose electronic equipment utilizing standard axial leads

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as the part number appears in listings from both Microsemi and Microchip Technology. Confirm RoHS compliance status and exact packaging specifications against the latest official datasheet before procurement. Ensure the component matches the required electrical parameters for your design.

Single Zener Diodes Selection Notes

Select this component when a 6.8 V reference with ±5% tolerance is required. The T-18 package supports up to 5 watts of power dissipation. Consider thermal derating curves if ambient temperatures exceed 25°C or if mounted on FR4 PCBs without sufficient copper pads.

Single Zener Diodes Part Context

This component belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series covers voltages from 3.3V to 200V. The 'B' suffix denotes a standard ±5% voltage tolerance, while the 'TR12' suffix specifies tape and reel packaging for automated assembly.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other 1N5342 variants from different manufacturers, such as those from Central Semiconductor. Verify that replacement parts match the 6.8 V nominal voltage, 5 W power rating, and T-18 package dimensions.