1M120Z

Overview

The 1M120Z is a single Zener diode manufactured by Taiwan Semiconductor, designed for through-hole mounting in the DO-41 (DO-204AL) axial leaded package. It features a nominal Zener voltage of 120 V with a tight tolerance of 5%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -55°C to +150°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 550 Ohms at a test current of 2 mA.

Feature Summary

• Provides stable voltage regulation via avalanche breakdown in the DO-41 axial package
• Engineered for high thermal stability across a wide operating temperature range up to 150°C
• Ensures low leakage current performance for efficient circuit protection applications

Applications

• Voltage reference circuits requiring precise 120 V stabilization
• Overvoltage protection stages in industrial control systems
• Clamping applications in power supply output stages

Procurement Notes

Verify component authenticity and datasheet revisions directly with Taiwan Semiconductor or authorized distributors before integration. Confirm RoHS compliance status and specific manufacturing lot codes for critical projects. Ensure procurement channels are authorized to prevent counterfeit components. Cross-reference package dimensions and pinout configurations with target PCB footprints during the design phase.

Selection Notes

Select this component when a robust 120 V regulation point is required in through-hole designs. The 5% tolerance suits general-purpose applications where tighter precision is unnecessary. Evaluate thermal management requirements based on the 1 W dissipation limit and ambient temperature conditions. Consider the 550 Ohm impedance for dynamic load response analysis in sensitive signal paths.

Part Context

This part belongs to the 1M series of axial Zener diodes from Taiwan Semiconductor. The series offers various voltage ratings within the DO-41 package, providing a standardized solution for discrete voltage regulation needs. The 1M120Z specifically addresses higher voltage requirements compared to lower-voltage variants in the same family.

Replacement Considerations

Compatible substitutes include other manufacturers' 120 V Zener diodes in the DO-41 package with matching 1 W power rating and 5% tolerance. Verify equivalent Zener impedance and leakage current specifications to ensure circuit performance parity.