MMBZ5238BTS-7-F

Overview

The MMBZ5238BTS-7-F is a triple surface mount Zener diode array manufactured by Diodes Incorporated. It integrates three isolated Zener diodes within an SOT-363 package, providing a nominal voltage of 8.7V per element with a tolerance range of 8.27V to 9.14V. The device operates at a test current of 20mA and features a maximum reverse leakage current of 3.0µA at 6.5V. Electrical specifications include a maximum Zener impedance of 8 Ohms at the test current and 600 Ohms at low current. Thermal performance allows for 200mW power dissipation on an FR-4 PCB, with an operating temperature range spanning from -65°C to +150°C.

Feature Summary

• Integrates three electrically isolated Zener diodes in a compact ultra-small surface mount package.
• Qualified to AEC-Q101 standards for high reliability applications.
• Totally lead-free and fully RoHS compliant with halogen and antimony-free green construction.

Applications

• Automated assembly processes requiring small form factor components.
• Voltage regulation circuits utilizing multiple independent reference points.
• Protection circuits requiring isolated clamping functions.

Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration. Confirm that the component meets all applicable environmental compliance standards relevant to the target market. Ensure the supplier provides valid traceability documentation for the manufacturing date code and lot number to maintain quality control records.

Selection Notes

Select this component when multiple independent voltage references are required within a limited board area. The SOT-363 package offers a smaller footprint compared to individual discrete packages. Verify that the total power dissipation requirements across all three elements remain within the specified thermal limits for the intended application environment.

Part Context

This part belongs to the MMBZ5221BTS through MMBZ5259BTS series of triple surface mount Zener diode arrays. The series covers a wide range of nominal voltages from 2.4V to 39V. All variants share the same physical package dimensions and pin configuration, differing only in the internal Zener breakdown voltages and associated electrical characteristics.

Replacement Considerations

Direct replacements must match the SOT-363 package and contain three isolated Zeners. Verify that substitute parts meet or exceed the 8.7V nominal voltage, 20mA test current, and 200mW power dissipation ratings. Check for equivalent AEC-Q101 qualification if automotive reliability is required.

FAQ

What is the marking code for the MMBZ5238BTS?

The product type marking code for the MMBZ5238BTS is KRG.

How is the orientation defined for the SOT-363 package?

The top view shows pins C3, C1, and C2 on one side and A2, A3, and A1 on the other, with Pin 1 indicated by a dot or notch as per standard SOT-363 conventions.

What is the maximum non-repetitive surge power capability?

The datasheet includes a graph for maximum non-repetitive surge power (Fig. 4), indicating the peak pulse power handling capability relative to pulse width, though a single static value is not provided.