UMZ4.7KFHTL

Overview

The UMZ4.7KFHTL is a Zener diode manufactured by ROHM Semiconductor, designed for surface-mount applications in compact electronic circuits. It features a dual-line configuration within an SOT-343 (UMD4) package, providing two independent Zener elements in a single component to save board space. The device is qualified under the AEC-Q101 standard, ensuring reliability for automotive environments. Key electrical parameters include a nominal Zener voltage of 4.7V with a maximum power dissipation of 200mW. It operates within a junction temperature range up to +150°C and supports storage temperatures from -55°C to +150°C. The unit quantity per reel is 3000.

Feature Summary

• Dual-line configuration integrates two Zener diodes into a single compact package for space-efficient circuit design.
• AEC-Q101 qualification ensures high reliability and suitability for demanding automotive electronic applications.
• Surface-mount SOT-343 package enables automated assembly and integration into dense PCB layouts.

Applications

• Automotive electronics requiring robust voltage regulation and noise suppression.
• Clamping circuits for protecting sensitive input pins from electrostatic discharge or voltage spikes.
• Reference voltage generation in low-power analog and digital signal processing circuits.

Procurement Notes

Verify the specific ordering suffix HTL confirms the tape-and-reel packaging format containing 3000 units per reel. Confirm that the UMZ4.7KFH variant designation aligns with the required 4.7V Zener voltage tolerance and thermal characteristics for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a dual-Zener solution is required in a minimal footprint SOT-343 package. Ensure the 200mW power dissipation rating meets the thermal requirements of the specific circuit design. Verify compatibility with AEC-Q101 standards if the application involves automotive systems or requires extended temperature operation capabilities.

Part Context

This part belongs to ROHM's UMZ series of small-signal Zener diodes, which are optimized for automotive-grade reliability. The series utilizes advanced semiconductor processes to achieve low leakage currents and stable voltage regulation within ultra-compact packages like the UMD4/SOT-343 form factor.

Replacement Considerations

The EDZVFHT2R4B7 is listed as a similar specification replacement. Note that it uses a different SOD-523 package and single-line configuration, requiring layout adjustments during substitution.