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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 27V SOT-23-3
- Series：MMBZxxxALT1G
- 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：-
- Qualification：-
- 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 onsemi MMBZ27VALT3G is a dual monolithic silicon Zener diode in an SOT-23 package, designed for transient overvoltage and ESD protection. It features a common anode configuration allowing two separate unidirectional channels or one bidirectional channel within a single component. Key electrical parameters include a maximum working peak reverse voltage (VRWM) of 22 V, a breakdown voltage (VBR) nominal value of 27 V with a range of 25.65 V to 28.35 V, and a clamping voltage (VC) of 40 V at a peak pulse current (IPP) of 1 A. The device supports a peak power dissipation of 40 W per junction for a 1.0 ms pulse duration.
Feature Summary
- Dual junction common anode design enables protection of two independent signal lines using a single surface-mount package.
- Capable of handling high-energy transients with a 40 W peak power rating per junction under specified pulse conditions.
- Provides robust electrostatic discharge (ESD) protection compliant with IEC61000-4-2 Level 4 standards.
Applications
- Protection of data and control lines in computers and business machines.
- ESD suppression for printer interfaces and communication systems.
- Transient voltage protection for medical equipment sensitive circuits.
Procurement Notes
Verify the ordering suffix 'T3' corresponds to the 10,000-unit reel packaging format as specified in the manufacturer's documentation. Confirm that the specific part number matches the required voltage tolerance and package style before procurement. Ensure compliance with RoHS and Pb-Free requirements if applicable to the assembly process.
Selection Notes
Select this component when board space is limited but dual-channel protection is required. The common anode topology simplifies PCB routing compared to discrete components. Verify that the 22 V working voltage aligns with the system's operational limits and that the 40 V clamping voltage does not exceed the downstream circuitry's absolute maximum ratings.
Part Context
This device belongs to the MMBZxxxALT1G series, which offers various Zener breakdown voltages ranging from 5.6 V to 47 V. The 'T3' suffix specifically denotes the tape and reel quantity of 10,000 units, distinguishing it from the 'T1' suffix which indicates a 3,000-unit reel. The series is designed for high-density applications requiring reliable transient suppression.
Replacement Considerations
MMBZ27VALT1G
FAQ
What is the pin configuration for the MMBZ27VALT3G?
Pin 1 is Cathode 1, Pin 2 is Cathode 2, and Pin 3 is the common Anode.
How does the T3 suffix differ from T1 in this series?
The T3 suffix indicates packaging in a 13-inch/10,000 unit tape and reel, whereas T1 indicates a 7-inch/3,000 unit tape and reel.
Is this device suitable for automotive applications?
Standard MMBZ parts are not explicitly qualified for automotive use; however, the SZ prefix variants (e.g., SZMMBZ27VALT3G) are AEC-Q101 qualified and PPAP capable for such applications.
