UMZ18KFHTL

Overview

The UMZ18KFHTL is a dual independent Zener diode array manufactured by Rohm Semiconductor, designed for automotive applications under the AEC-Q101 qualification standard. It features a nominal Zener voltage of 17.96 V with a tight tolerance of ±2.2%. The device operates with a maximum power dissipation of 200 mW and maintains a low reverse leakage current of 100 nA at 13 V. It is housed in a compact UMD4 (SOT-343/SC-82A) surface-mount package, supporting a junction temperature up to 150°C.

Feature Summary

• Dual independent configuration within a single compact surface-mount package
• Automotive-grade reliability certified to AEC-Q101 standards
• High thermal stability with a maximum junction temperature of 150°C

Applications

• Terminal protection devices in automotive electronics
• Voltage reference circuits requiring high precision
• Transient voltage suppression in automotive systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required packaging format. Ensure compliance with RoHS3 directives and REACH regulations before integration into final assemblies.

Selection Notes

Select this component when a dual Zener array with precise voltage tolerance is required for space-constrained automotive designs. Consider the UMD4 package dimensions and thermal characteristics against alternative packages like UMD3 or EMD2 based on board layout constraints.

Part Context

This part belongs to the UMZ18 series of Zener diode arrays from Rohm Semiconductor. It serves as a specialized solution for automotive terminal protection, offering higher precision compared to general-purpose Zener diodes while maintaining robustness against electrostatic discharge and transient events.

Replacement Considerations

The EDZVFHT2R18B is documented as a similar specification replacement. Note that it utilizes an EMD2 package instead of UMD4, requiring footprint adaptation during substitution.