UMZ16NFHT106

Overview

The UMZ16NFHT106 is a dual Zener diode array manufactured by ROHM Semiconductor, designed for terminal protection applications. It features a common anode configuration housed in a compact UMD3 (SOT-323) surface-mount package with dimensions of 2 mm x 1.25 mm x 0.7 mm. The device specifies a nominal Zener voltage of 16 V with a tight tolerance of ±2%, ranging from 15.85 V to 16.51 V at a test current of 5 mA. Key electrical parameters include a maximum power dissipation of 200 mW, a reverse leakage current of 100 nA, and a Zener impedance of 50 Ohms. It operates within a junction temperature range of -55°C to +150°C and holds AEC-Q101 automotive qualification.

Feature Summary

• Dual Zener diodes integrated into a single common anode package for efficient space utilization.
• Automotive-grade reliability certified under the AEC-Q101 standard for harsh environment operation.
• Compact UMD3 plastic package design suitable for high-density surface mount assembly.
• Low capacitance characteristics optimized for protecting sensitive I/O lines against transient voltages.

Applications

• Terminal protection for automotive electronic control units (ECUs).
• Electrostatic discharge (ESD) suppression on data and communication interfaces.
• Voltage reference and clamping circuits in compact consumer electronics.
• Transient voltage suppression in industrial control systems requiring small form factors.

Procurement Notes

Verify the complete ordering part number, including suffixes such as T106, to ensure correct packaging and tape specifications. Confirm that the required Zener voltage tolerance aligns with the ±2% specification provided in the datasheet. Check for RoHS compliance status and confirm the specific manufacturing date code if traceability is required for your production line. Ensure the procurement source provides valid documentation matching the ROHM Semiconductor manufacturer identification.

Selection Notes

Select this component when a dual Zener solution with a common anode is required for ESD or transient protection in space-constrained designs. The 16 V breakdown voltage makes it suitable for protecting 12 V or 24 V automotive bus lines. Consider the 200 mW power rating and 50 Ohm impedance for circuit simulation. Verify that the SOT-323 footprint matches the PCB layout constraints and that the operating temperature range meets the environmental requirements of the final application.

Part Context

The UMZ16NFHT106 belongs to the UMZ16 series of Zener arrays from ROHM Semiconductor. This series is engineered specifically for terminal protection devices in automotive and industrial sectors. It shares the same UMD3 package and pinout configuration with other variants in the family, such as the UMZ18NFHT106, differing primarily in the specified Zener voltage breakdown point. The series is characterized by its small physical size and high reliability standards.

Replacement Considerations

Direct substitutes within the same package and configuration include the UMZ18NFHT106 (18 V) or UMZ27NFHT106 (27 V) if the voltage rating can be adjusted. Cross-vendor equivalents in SOT-323-3 packages should be evaluated for matching Zener voltage, power dissipation, and leakage current specifications. Ensure any replacement maintains AEC-Q101 qualification if used in automotive applications.