MTZJ3V9SB

Single Zener Diodes Overview

The MTZJ3V9SB is a small signal Zener diode manufactured by Taiwan Semiconductor Corporation, designed for through-hole mounting in the DO-34 glass package. It features a nominal Zener voltage of 3.88 V with a maximum tolerance of ±2% (suffix B). The device operates at a test current of 5 mA and dissipates up to 500 mW. Key electrical characteristics include a maximum reverse leakage current of 5 μA at 1.0 V and a regular impedance of 100 Ω. It supports a junction temperature range from -55 °C to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction with compression bonded design
• Corrosion-resistant external surfaces with solderable pure tin plated leads
• Wide selection of Zener voltages ranging from 2 V to 56 V
• RoHS compliant manufacturing process

Single Zener Diodes Applications

• Low voltage stabilizers
• Voltage references
• Adapters
• Lighting applications
• On-board DC/DC converters

Single Zener Diodes Procurement Notes

Verify the specific suffix 'B' to confirm the 2% voltage tolerance requirement, as other suffixes indicate different tolerances. Confirm the 'R0' or 'A0' packing code matches the required reel or ammo box quantity. Ensure the component meets RoHS compliance standards if required by the assembly process. Check for end-of-life status or discontinuation notices before finalizing procurement plans.

Single Zener Diodes Selection Notes

Select this component when a precise low-voltage reference near 3.9 V is needed with tight tolerance requirements. The DO-34 package is suitable for through-hole PCB layouts requiring robust mechanical stability. Consider the 500 mW power dissipation limit relative to ambient operating temperatures to ensure thermal reliability within the specified junction temperature range.

Single Zener Diodes Part Context

This part belongs to the MTZJ2V0SA – MTZJ56S series of 500 mW hermetically sealed glass Zener diodes. The series offers a broad voltage range from 2 V to 56 V in a single standardized DO-34 package format. These devices are engineered for general-purpose voltage regulation and reference applications in consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering DO-34 packaged Zener diodes with similar 3.9 V nominal voltage and 2% tolerance. Verify that replacement parts match the 500 mW power rating, 100 Ω impedance, and 5 μA leakage specifications to maintain circuit performance.