1M120ZHR1G

Overview

The 1M120ZHR1G is a Zener diode manufactured by Taiwan Semiconductor Corporation, housed in the DO-204AL (DO-41) axial leaded package. It features a nominal Zener voltage of 120 V and a power dissipation rating of 1 W. The device operates within a junction temperature range of -55°C to +150°C. Key electrical specifications include a maximum reverse leakage current of 5 μA at 91.2 V and a dynamic impedance of 550 Ohms with a tolerance of ±5%.

Feature Summary

• Provides stable voltage regulation through Zener breakdown characteristics
• Designed for high-temperature operation up to 150°C junction temperature
• Utilizes robust DO-204AL axial packaging for through-hole mounting

Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Procurement Notes

Verify the specific suffix 'R1' against official Taiwan Semiconductor documentation to confirm tape-and-reel packaging or specific binning requirements. Ensure the component matches the DO-204AL footprint and pin configuration for your PCB design. Cross-reference datasheet parameters such as Zener voltage tolerance and leakage current limits with your circuit design constraints before finalizing procurement.

Selection Notes

Select this component when a 120 V Zener voltage is required in a standard axial package. Consider the 1 W power rating and 550 Ohm dynamic impedance for your load conditions. Verify that the operating environment stays within the specified -55°C to +150°C junction temperature range. Compare leakage current specifications against sensitive circuit requirements.

Part Context

This part belongs to the series of general-purpose Zener diodes offered by Taiwan Semiconductor. These components are commonly used in power supplies and protection circuits where reliable voltage clamping is necessary. The DO-204AL package is a standard industry form factor for through-hole applications.

Replacement Considerations

Check for equivalents like the 1M120ZHA0G from the same manufacturer or similar 120V 1W Zener diodes from other vendors. Ensure pinout compatibility and verify that electrical parameters such as Zener voltage tolerance and thermal resistance meet or exceed original requirements.