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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 32.97V UMD4
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：2 Independent
- Voltage - Zener (Nom) (Vz)：32.97 V
- Tolerance：±2.49%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：100 nA @ 25 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：UMD4
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The UMZ33KFHTL 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 32.97 V with a tight tolerance of ±2.49%, ensuring precise voltage regulation. The device operates with a maximum power dissipation of 200 mW and maintains a low reverse leakage current of 100 nA at 25 V. Packaged in a compact UMD4 (SOT-343) surface-mount housing, it supports a junction temperature up to 150°C and is supplied in tape-and-reel formats.
Feature Summary
- Dual independent configuration providing two separate Zener channels within a single package
- Automotive-grade reliability certified to AEC-Q101 standards for high-temperature operation
- Compact UMD4 surface-mount footprint suitable for space-constrained PCB layouts
Applications
- Automotive circuit protection and voltage clamping
- Transient voltage suppression in vehicle electronics
- Reference voltage generation in precision analog circuits
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm AEC-Q101 certification status and RoHS3 compliance before integration. Check supply status as the part may be restricted for new designs. Ensure storage conditions meet moisture sensitivity level requirements to prevent package damage during assembly.
Selection Notes
Select this component when dual independent Zener regulation is required in automotive environments. The UMD4 package offers a smaller footprint compared to traditional SOT-23 variants. Consider the ±2.49% tolerance for applications demanding tight voltage accuracy. Evaluate thermal management needs given the 200 mW power dissipation limit in enclosed spaces.
Part Context
This part belongs to Rohm's UMZ series of Zener diode arrays, specifically engineered for automotive electronics. The UMZ33 variant provides a ~33V breakdown voltage, distinguishing it from lower-voltage options like the UMZ16. It shares design lineage with the UMZ33KFH but includes specific taping and packaging modifications for automated assembly processes.
Replacement Considerations
The EDZVFHT2R33B is documented as a similar specification replacement. Verify pin compatibility and exact voltage tolerances before substitution. The EDZVFHT2R33B uses an EMD2 package, requiring PCB layout adjustments.
