1N5351A/TR12

Overview

The Microchip Technology 1N5351A/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across a broad operating current and temperature range. It features a T-18 axial lead package with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards. The device provides a nominal Zener voltage of 14 V with a standard tolerance of ±10%, indicated by the 'A' suffix. Electrical characteristics are measured at a test current of 100 mA, with a maximum dynamic impedance of 2.5 Ohms and a maximum reverse current of 75 µA. The component supports operation within a temperature range of -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Applications

• Voltage reference circuits in power supplies
• Overvoltage protection stages
• General purpose voltage regulation tasks

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging and compliance details. The 'TR' suffix indicates tape and reel packaging per EIA-296 standards. Ensure the selected variant matches the required voltage tolerance and thermal dissipation capabilities for the intended application environment.

Selection Notes

Select this component when a 5-watt power rating and 14 V nominal regulation are required. The ±10% tolerance suits general applications where tighter precision is not critical. Consider the T-18 package dimensions and thermal resistance values for adequate heat sinking design to maintain performance within the specified operating temperature limits.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes originally manufactured by Microsemi, now under Microchip Technology. The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters. These devices are JEDEC registered and designed for robust performance in demanding electronic environments.

Replacement Considerations

Consult official substitution lists for verified equivalents. Cross-reference electrical parameters such as Zener voltage, power dissipation, and package type to ensure compatibility.