UMZ18NT106

Overview

The UMZ18NT106 is a Zener diode array manufactured by Rohm Semiconductor, designed for surface-mount applications. It features a dual configuration with a common anode setup housed in a UMD3 (SOT-323) package. The nominal Zener voltage is 18 V with a tolerance of ±2.19%, ensuring precise voltage regulation. The device supports a maximum power dissipation of 200 mW and operates within a junction temperature range up to 150°C. It meets AEC-Q101 automotive standards and includes reverse leakage current specifications of 100 nA at 13 V.

Feature Summary

• Dual Zener diode array configured as common anode for efficient space utilization
• Automotive-grade reliability certified under AEC-Q101 standards
• Compact SOT-323 package design suitable for high-density PCB layouts

Applications

• Terminal protection devices requiring transient voltage suppression
• Automotive electronic circuits demanding high-reliability voltage regulation
• ESD protection interfaces compliant with IEC61000-4-2 standards

Procurement Notes

Verify the exact part number suffix against official Rohm documentation, as the provided model differs from the standard UMZ18NFHT106 designation found in public records. Confirm package type and electrical parameters match system requirements before procurement. Ensure compliance with RoHS directives and check for any specific automotive qualification certificates required for the intended application environment.

Selection Notes

Select this component when a dual Zener array with common anode topology is required for compact designs. The 18 V rating and 200 mW power dissipation suit low-power signal conditioning tasks. Consider the SOT-323 footprint constraints and verify thermal management capabilities for operation near the 150°C junction temperature limit. Ensure compatibility with automated assembly processes given the reel packaging format.

Part Context

This component belongs to the UMZ18 series of Zener arrays produced by Rohm Semiconductor. These devices are engineered specifically for terminal protection applications in automotive environments. The series offers various voltage options while maintaining consistent package dimensions and electrical characteristics to simplify supply chain management across different product lines.

Replacement Considerations

Publicly documented substitutes include the UMZ18NFH and UMZ18NFHT106, which share identical pinouts and packages. Verify that replacement parts maintain the same AEC-Q101 qualification status and electrical tolerances to ensure seamless integration without redesigning the circuit board or updating firmware logic.