1N5353B/TR12

Overview

The Microchip Technology 1N5353B/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across broad operating current and temperature ranges. 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 16 V with a ±5% tolerance, tested at 75 mA. Key electrical characteristics include a maximum dynamic impedance of 2.5 Ohms, a maximum reverse current of 1.0 µA, and a maximum regulator current of 6.0 A when adequately heat sunk. It operates within a temperature range of -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Withstands high surge stresses and is nonsensitive to electrostatic discharge per MIL-STD-750 Method 1020
• Features flexible axial-lead mounting terminals for secure installation
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

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

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified suppliers. Confirm RoHS compliance status by checking for the e3 suffix if required. Ensure proper handling procedures are followed due to the through-hole packaging format. Review datasheet specifications for thermal derating requirements before integration into final designs.

Selection Notes

Select this component for applications requiring robust 5-watt power dissipation capabilities. Consider the specific 16 V Zener voltage and ±5% tolerance for precise circuit design needs. Evaluate thermal management solutions to maintain performance within the specified junction-to-lead thermal resistance limits during operation.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microsemi (now 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 characterized by low thermal resistance and high maximum DC current capabilities when properly heat sunk.

Replacement Considerations

Surface mount equivalents such as SMBJ5353B or SMBG5353B are available for space-constrained designs. Verify that replacement parts match the original voltage, power rating, and package type requirements.