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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 28V SOT363
- Series：*
- Mfr：Diodes Incorporated
- Package：Cut Tape (CT)
- Configuration：-
- Voltage - Zener (Nom) (Vz)：-
- Tolerance：-
- Power - Max：-
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：-
- pa_package-case：
- Supplier Device Package：-
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The MMBZ5255BS-7-F is a dual isolated Zener diode manufactured by Diodes Incorporated, housed in an SOT-363 surface-mount package. It features a nominal Zener voltage of 28 V with a tolerance range of 26.60 V to 29.40 V at a test current of 4.5 mA. The device has a maximum power dissipation of 200 mW and a maximum reverse leakage current of 600 µA at 21 V. Electrical characteristics include a typical Zener impedance of 44 Ω at the test current and a forward voltage of 0.9 V at 10 mA. The component operates within a temperature range of -65°C to +150°C.
Feature Summary
- Dual isolated Zeners integrated into an ultra-small surface mount package
- Planar die construction for reliable performance
- Lead-free plating with matte tin finish over Alloy 42 leadframe
- UL flammability classification rating of 94V-0 for molded plastic case
Applications
- Automated assembly processes requiring compact components
- Voltage reference circuits utilizing dual independent channels
- Protection applications requiring low-profile surface mount solutions
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm packaging details. The standard configuration utilizes tape and reel packaging with a quantity of 3000 units per reel. Confirm compliance requirements such as RoHS status and moisture sensitivity level prior to procurement to ensure alignment with manufacturing standards.
Selection Notes
Select this component when dual isolated Zener functionality is required in a minimal footprint. The SOT-363 package supports automated assembly. Ensure the 28 V breakdown voltage aligns with circuit requirements. Verify thermal management capabilities given the 200 mW power dissipation limit and junction-to-ambient thermal resistance specifications.
Part Context
This part belongs to the MMBZ5221BS through MMBZ5259BS series from Diodes Incorporated. The series offers various Zener voltage options ranging from 2.4 V to 39 V within the same physical package. All variants share identical mechanical dimensions and electrical testing conditions, facilitating design flexibility across different voltage requirements.
Replacement Considerations
Direct substitutes include other MMBZ5255BS variants from Diodes Incorporated. Cross-manufacturer replacements must match the SOT-363 package dimensions, 28 V nominal voltage, and 200 mW power rating. Verify pinout compatibility and electrical tolerances before implementation.
