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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 2.4V SOT-363
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：2 Independent
- Voltage - Zener (Nom) (Vz)：2.4 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：30 Ohms
- Current - Reverse Leakage @ Vr：100 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 MMBZ5221BS-7-F is a dual isolated Zener diode array manufactured by Diodes Incorporated, housed in an SOT-363 surface-mount package. It features a nominal Zener voltage of 2.4 V with a tolerance range of 2.28 V to 2.52 V at a test current of 20 mA. The device supports a maximum power dissipation of 200 mW and operates within a temperature range of -65°C to +150°C. Electrical specifications include a maximum Zener impedance of 30 Ohms at the test current and a maximum reverse leakage current of 100 µA at 1.0 V. The forward voltage is rated at 0.9 V when tested at 10 mA.
Feature Summary
- Dual isolated Zener diodes integrated into an ultra-small surface mount package for automated assembly processes.
- Planar die construction utilizing molded plastic case material with UL flammability classification rating 94V-0.
- Lead-free plating with matte tin finish annealed over an Alloy 42 leadframe.
Applications
- Voltage reference circuits requiring compact dual-channel regulation.
- Clamping applications in high-density surface mount designs.
- Protection stages in portable electronic devices.
Procurement Notes
Verify component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the required packaging configuration. Ensure compliance with RoHS directives and check date codes for green molding compound requirements if halogen-free status is critical for the specific application environment.
Selection Notes
Select this component when a dual Zener configuration is required in a minimal footprint. Compare electrical parameters such as Zener impedance and leakage current against circuit requirements. Verify thermal resistance characteristics and ensure adequate pad layout on the FR4 PCB to support the recommended 200 mW power dissipation limit during operation.
Part Context
This part belongs to the MMBZ5221BS-MMBZ5259BS series, which provides various Zener voltage options within the same SOT-363 package. The series utilizes a consistent mechanical outline and marking scheme across different voltage ratings, facilitating design standardization for multi-voltage reference needs in space-constrained electronics.
Replacement Considerations
Direct substitutes include other MMBZ5221BS variants from Diodes Incorporated with identical electrical characteristics. Cross-referencing requires matching the SOT-363 package dimensions and verifying equivalent Zener voltage tolerances and power dissipation limits.
FAQ
What is the maximum reverse leakage current specified for the MMBZ5221BS?
The maximum reverse leakage current is 100 µA when measured at a reverse voltage of 1.0 V.
How is the device marked for identification?
The marking consists of a product type code (KC1) followed by a date code indicating the year and month of manufacture.
What is the thermal resistance from junction to ambient air?
The thermal resistance (RθJA) is 625 °C/W when mounted on an FR4 PCB with the recommended pad layout.
