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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 22.01V UMD4
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：2 Independent
- Voltage - Zener (Nom) (Vz)：22.01 V
- Tolerance：±2.11%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：100 nA @ 17 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 UMZ22KFHTL is a Zener diode manufactured by ROHM Semiconductor, designed for automotive applications in compliance with the AEC-Q101 standard. It features a dual-line configuration housed in an SOT-343 (UMD4) package with four terminals. The device operates with a typical Zener voltage of 22.0 V, ranging from a minimum of 21.54 V to a maximum of 22.47 V at a test current of 5 mA. It supports a maximum junction temperature of 150°C and has a power dissipation rating of 200 mW. The component is supplied in tape and reel packaging with a unit quantity of 3000.
Feature Summary
- Dual-line configuration for integrated voltage regulation within compact surface-mount footprints
- Automotive-grade reliability certified under the AEC-Q101 standard for harsh environment operation
- High thermal tolerance supporting a maximum junction temperature of 150°C
Applications
- Voltage reference circuits in automotive electronic control units
- Overvoltage protection stages in vehicle sensor interfaces
- Clamping applications in automotive communication bus lines
Procurement Notes
Verify the supply status carefully before procurement, as this component is classified as not recommended for new designs. Confirm that the ordering part number UMZ22KFHTL matches the required tape-and-reel packaging format. Ensure compatibility with existing board layouts utilizing the SOT-343 footprint, as replacement options may require design adjustments due to package differences.
Selection Notes
Select this component only for maintenance or legacy system upgrades where the specific dual-line SOT-343 form factor is mandatory. Evaluate alternative single-line packages like the EMD2 if design flexibility allows, as other variants may be currently recommended for new projects. Verify that the 200 mW power dissipation limit suffices for the intended thermal environment.
Part Context
The UMZ22KFH series represents ROHM's line of dual-line Zener diodes optimized for space-constrained automotive electronics. The UMZ22KFHTL specifically denotes the tape-and-reel version of the UMZ22KFH part. This series provides precise voltage regulation capabilities while maintaining the small physical dimensions required for modern printed circuit board assemblies in vehicle systems.
Replacement Considerations
The EDZVFH22B is documented as a similar specification part. However, it utilizes a single-line SOD-523 (EMD2) package with two terminals, differing significantly from the UMZ22KFHTL's dual-line SOT-343 configuration. Pinout and board layout changes are required for substitution.
