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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 20V SOT-23-3
- Series：SZMMBZxxxALT1G
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：20 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：50 nA @ 17 V
- Operating Temperature：-55°C ~ 150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3 (TO-236)
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The SZMMBZ20VALT1G is a dual common anode Zener transient voltage suppressor from onsemi, housed in a compact SOT-23 package. It provides bidirectional ESD protection for two separate lines using a single component. The device features a nominal breakdown voltage of 20V and a working peak reverse voltage of 17V. It handles a peak pulse power of 40W at 1.0ms and offers low leakage current. Qualified under AEC-Q101 standards, it operates within a temperature range of -55°C to +150°C.
Feature Summary
- Dual monolithic silicon Zener diodes with common anode configuration
- Bidirectional ESD protection capability for sensitive equipment
- Compact SOT-23 surface-mount package design
- Automotive grade qualification (AEC-Q101) with PPAP capability
Applications
- ESD protection for data and signal lines in computers
- Transient suppression in communication systems
- Protection circuits for medical equipment
- Voltage regulation in business machines
Procurement Notes
Verify the specific suffix 'SZ' indicates automotive-grade qualification and PPAP compliance as per manufacturer documentation. Confirm the package type is SOT-23 and check RoHS status against current regulatory requirements before finalizing procurement orders.
Selection Notes
Select this component when space-constrained designs require dual-line ESD protection. Ensure the operating voltage does not exceed the 17V working peak reverse voltage. Verify that the 40W peak pulse power rating aligns with the expected transient energy levels in the target application circuit.
Part Context
This part belongs to the MMBZxxxALT1G and SZMMBZxxxALT1G series of 24W and 40W peak power Zener TVS diodes. The 'SZ' prefix specifically denotes parts manufactured for automotive applications requiring unique quality standards compared to standard commercial variants.
Replacement Considerations
Direct replacements include other members of the MMBZ20VA family such as MMBZ20VALT1G, provided automotive qualification is not mandatory. Verify pinout compatibility and thermal characteristics when substituting.
