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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 4.3V SOT-363
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Configuration：2 Independent
- Voltage - Zener (Nom) (Vz)：4.3 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：22 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 1 V
- Operating Temperature：-65°C ~ 150°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-363
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The MMBZ5229BS-7 is a dual isolated Zener diode array manufactured by Diodes Incorporated, housed in an SOT-363 surface-mount package. It provides two independent Zener channels with a nominal breakdown voltage of 4.3 V and a tolerance of ±5%. The device dissipates up to 200 mW of power at 25°C ambient temperature, with a maximum reverse leakage current of 5.0 µA at 1.0 V and a typical Zener impedance of 22 Ω at a test current of 20 mA. Operating temperatures range from -65°C to +150°C.
Feature Summary
- Dual isolated Zener diodes integrated into a single ultra-small surface mount package
- Planar die construction designed for automated assembly processes
- Lead-free plating with matte tin finish annealed over Alloy 42 leadframe
Applications
- Voltage reference circuits requiring dual independent references
- Signal clamping and protection in compact electronic devices
- Power supply regulation modules utilizing small form factor components
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to confirm packaging configuration and compliance status. Ensure that the procurement channel sources directly from authorized distributors or the manufacturer to guarantee component authenticity and traceability throughout the supply chain.
Selection Notes
Select this component when circuit design requires two independent voltage regulation paths within a constrained board area. Evaluate thermal resistance characteristics relative to the expected ambient operating conditions to ensure the total power dissipation remains within the specified 200 mW limit without exceeding junction temperature ratings.
Part Context
This part belongs to the MMBZ5221BS through MMBZ5259BS series, which offers various Zener voltage options within the same physical footprint. The series utilizes a standardized SOT-363 package to facilitate consistent PCB layout strategies across different voltage requirements while maintaining uniform mechanical mounting profiles.
Replacement Considerations
Direct substitutes must match the SOT-363 package dimensions and provide equivalent dual-channel isolation. Verify that alternative parts maintain the 200 mW power dissipation rating and compatible electrical parameters such as Zener voltage tolerance and leakage current specifications.
