1N5345A/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5345A/TR12 is a silicon 5-watt Zener diode in the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 8.7 V with a ±10% tolerance, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a maximum reverse current of 10 µA and a maximum dynamic impedance of 2.0 Ω.

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 applications
• Moisture classification Level 1 requiring no dry pack

Single Zener Diodes Applications

• Voltage regulation circuits
• High power dissipation applications with adequate heat sinking
• Surge stress protection environments

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin as the datasheet identifies Microsemi Scottsdale Division, while the model prefix indicates Microchip Technology. Confirm RoHS compliance status via the e3 suffix if required, as standard versions may differ. Ensure the TR12 tape and reel packaging matches assembly requirements. Validate that the component meets MIL-PRF-19500 screening levels if military specifications are necessary for the application.

Single Zener Diodes Selection Notes

Select this component for applications requiring 5-watt power dissipation and an 8.7 V reference point. The ±10% tolerance suits general regulation tasks where tighter precision is not critical. Consider the thermal resistance of 25 °C/W junction-to-lead when designing heat sinks. Verify compatibility with FR4 PC board mounting constraints if ambient temperature derating is required.

Single Zener Diodes Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series covers a voltage selection from 3.3 to 200 volts. The 'TR' suffix denotes tape and reel packaging per EIA-296 standards. The 'e3' suffix indicates RoHS compliant annealed matte-Tin plating on the terminals.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same series include 1N5345B (±5% tolerance) or 1N5345D (±1% tolerance). Surface mount equivalents are available as SMBJ5345 or SMBG5345 variants.