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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 33V SOT-23-3
- Series：SZMMBZxxxALT1G
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：33 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：50 nA @ 26 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 SZMMBZ33VALT1G is a Zener transient voltage suppressor manufactured by onsemi, belonging to the MMBZ series. It features a nominal breakdown voltage of 33V and is housed in an SOT-23 surface-mount package. The device provides a steady-state power dissipation rating of 225 mW at 25°C. It offers peak pulse power capabilities of 24 W for an 8/20 µs waveform and 40 W for a 10/1000 µs waveform. The component operates within a junction temperature range of -55°C to +150°C and is qualified under AEC-Q101 standards for automotive applications.
Feature Summary
- Dual Zener configuration integrated into a compact single package for space-constrained designs
- High peak pulse power handling capability for effective transient voltage suppression
- Automotive qualification ensuring reliability in demanding environmental conditions
Applications
- Protection of sensitive electronic circuits against electrostatic discharge (ESD) events
- Surge protection in automotive electronic control units and modules
- Voltage regulation and clamping in portable consumer devices
Procurement Notes
Verify the specific suffix 'VA' corresponds to the required tolerance and marking code for your assembly process. Confirm that the AEC-Q101 qualification meets the specific site and control change requirements mandated by your automotive supply chain standards before finalizing procurement.
Selection Notes
Select this component when a dual-channel Zener solution is required in an SOT-23 footprint. Ensure the 33V breakdown voltage aligns with the system's operating limits. Consider the 225 mW steady-state power rating for continuous operation and the 24 W/40 W peak ratings for transient event survival during design validation.
Part Context
This part belongs to the MMBZ family of dual Zener diodes designed for high-density PCB layouts. The 'SZ' prefix indicates it is intended for automotive or other applications requiring unique site and control change requirements. It serves as a compact alternative to discrete dual-diode arrangements, simplifying board space utilization.
Replacement Considerations
Direct functional substitutes include MMBZ33VALT1G and MMBZ33VT1G from onsemi. Verify pinout compatibility and thermal characteristics when transitioning between these variants to ensure circuit integrity without redesign.
