ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：DIODE ZENER ARRAY 27V SOT-23-3
- Series：SZMMBZxxxALT1G
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：27 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：50 nA @ 22 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
Download product information
Overview
The SZMMBZ27VALT1G is a dual common anode transient voltage suppressor (TVS) diode manufactured by onsemi, housed in a surface-mount SOT-23 (SC-59-3) package. It features a maximum reverse standoff voltage of 22 V and a breakdown voltage range of 25.65 V to 28.35 V. The device clamps transients to a maximum of 40 V while handling a peak pulse current of 1 A and a peak pulse power dissipation of 40 W. It provides electrostatic discharge protection rated at 30 kV according to IEC standards. The component operates within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual monolithic silicon Zener configuration with common anode topology for protecting two independent signal lines within a single compact package.
- Designed for transient overvoltage suppression and electrostatic discharge protection in voltage-sensitive electronic equipment.
- Automotive-grade reliability certified under the AEC-Q101 standard for automotive applications.
Applications
- Protection of data bus lines in computers and business machines.
- Electrostatic discharge shielding for communication systems and peripheral interfaces.
- Transient voltage suppression in medical equipment requiring robust ESD immunity.
Procurement Notes
Verify the specific suffix 'SZ' against the official manufacturer datasheet to confirm it denotes a special manufacturing or quality variant distinct from the standard MMBZ27VALT1G part number. Ensure the ordering documentation explicitly references the automotive AEC-Q101 certification if required for the target application. Cross-reference the exact part string with authorized distributors to avoid substitution errors with non-automotive grade equivalents.
Selection Notes
Select this component when board space is limited and dual-channel protection is required for unidirectional signals. The SOT-23 package offers a low profile suitable for dense PCB layouts. Verify that the 22 V standoff voltage aligns with the operating voltage of the protected circuitry. Confirm that the 40 W peak pulse power rating exceeds the energy levels of expected transient events in the specific environment.
Part Context
This component belongs to the MMBZ Series of dual Zener TVS diodes produced by onsemi. The series utilizes monolithic silicon technology to integrate two junctions into one small footprint. The 'SZ' prefix typically indicates an automotive-specific version compliant with AEC-Q101, distinguishing it from general-purpose industrial variants within the same electrical family.
Replacement Considerations
The standard MMBZ27VALT1G serves as the primary functional equivalent. However, verify if the 'SZ' suffix mandates the AEC-Q101 automotive qualification. If automotive reliability is not required, the standard variant may be substituted. Check for availability of the MMBZ27VCLT1G if a common cathode configuration is preferred instead.
