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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 29.94V UMD4
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：2 Independent
- Voltage - Zener (Nom) (Vz)：29.94 V
- Tolerance：±2.51%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：100 nA @ 23 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 UMZ30KFHTL is a Zener diode array manufactured by Rohm Semiconductor, designed for automotive applications in compliance with the AEC-Q101 standard. It features a dual-line configuration housed in a UMD4 package (SOT-343/SC-82), measuring 2.1x2.0 mm with a thickness of 1.0 mm. The device has a maximum power dissipation of 200 mW and operates at a junction temperature up to 150°C. The nominal Zener voltage is approximately 29.6 V, with a test current of 5 mA. This component is designated as Not Recommended for New Designs (NRND) and is produced solely to support existing customers.
Feature Summary
- Dual-line Zener array configuration providing two independent channels within a single compact surface-mount package.
- Automotive-grade reliability certified under the AEC-Q101 standard for high-temperature operation.
Applications
- Voltage regulation and clamping in automotive electronic control units (ECUs).
- Protection of sensitive input/output lines against transient voltage spikes in vehicle systems.
- Reference voltage generation in automotive sensor interfaces.
Procurement Notes
This component is classified as Not Recommended for New Designs (NRND). Production is limited to supporting existing customer orders; it is not available for new design-in projects. Verification of current stock availability and final unit pricing requires direct inquiry to authorized distributors or the manufacturer, as supply status may change without notice.
Selection Notes
Designers should select the EDZVFH30B as a replacement, which offers similar electrical specifications but utilizes an EMD2 (SOD-523) package. The replacement provides a single-channel configuration instead of dual-line, requiring layout adjustments. Ensure the new design accommodates the difference in terminal count and package dimensions when migrating from the UMZ30KFHTL.
Part Context
The UMZ30KFHTL belongs to the UMZ series of Zener diode arrays from Rohm Semiconductor. These components are specifically engineered for automotive environments, adhering to strict quality and reliability standards defined by AEC-Q101. The series is characterized by its small footprint and robust performance under high-temperature conditions typical in vehicle electronics.
Replacement Considerations
The EDZVFH30B is the officially documented similar specification replacement. It differs in package type (EMD2 vs. UMD4) and configuration (Single vs. Dual Line). Designers must verify pinout compatibility and PCB footprint changes before substitution.
FAQ
Is the UMZ30KFHTL suitable for new automotive designs?
No, the UMZ30KFHTL is marked as Not Recommended for New Designs (NRND) and is only produced for existing customers.
What is the recommended replacement part number?
The EDZVFH30B is listed as a similar specification replacement, though it uses a different package and single-channel configuration.
What is the maximum operating junction temperature?
The maximum operating junction temperature (Tj) is 150°C.
