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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 27V SOT-23-3
- Series：MMBZxxxALT1G
- Mfr：onsemi
- Package：Tape & Reel (TR)
- 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 MMBZ27VALT1G is a dual monolithic silicon Zener transient voltage suppressor in an SOT-23 package. It features a common anode configuration with two unidirectional channels. Key electrical parameters include a working peak reverse voltage of 22 V, a breakdown voltage range of 25.65 V to 28.35 V at a test current of 1 mA, and a maximum clamping voltage of 40 V at a peak pulse current of 1 A. The device handles a peak power dissipation of 40 W for a 1.0 ms pulse duration. It operates within a junction temperature range of -55°C to +150°C.
Feature Summary
- Dual common anode design protects two separate lines using a single package.
- SOT-23 package allows flexible unidirectional or bidirectional configurations.
- Provides ESD protection rated up to ±30 kV contact discharge per IEC61000-4-2 Level 4.
Applications
- Computer interface protection
- Printer and business machine I/O protection
- Microprocessor bus and clock line protection
Procurement Notes
Verify the specific ordering suffix when purchasing. The 'LT1' suffix indicates a standard 7-inch tape and reel packaging containing 3,000 units. Confirm that the required automotive qualification prefix 'SZ' is included if the application demands AEC-Q101 compliance and PPAP capability. Ensure the component matches the exact voltage rating specified in the circuit design.
Selection Notes
Select this component for applications requiring compact board space and dual-line transient suppression. The 40 W peak power rating supports high-energy surge events. Verify that the 22 V working voltage aligns with the system's operational limits. Consider the SZ prefix variant if automotive-grade reliability and unique site control requirements are necessary for the production environment.
Part Context
This part belongs to the MMBZxxxALT1G series of dual common anode Zener diodes. The series covers a standard Zener breakdown voltage range from 5.6 V to 47 V. All devices in this family share the same SOT-23 mechanical outline and general thermal characteristics, differing primarily in their specific voltage ratings and corresponding clamping performance.
Replacement Considerations
MMBZ27VALT3G offers identical electrical specifications but utilizes a 13-inch tape and reel packaging format containing 10,000 units. SZMMBZ27VALT1G provides the same functionality with added automotive qualification (AEC-Q101) and PPAP capability.
