MMXZ5257B-TP

Single Zener Diodes Overview

The MMXZ5257B-TP is a single Zener diode manufactured by Micro Commercial Components (MCC) in the SOD-323 surface-mount package. It features a nominal Zener voltage of 33 V with a standard tolerance of ±5%. The device has a maximum power dissipation of 200 mW and operates within a junction temperature range of -55°C to 150°C. Electrical characteristics include a maximum dynamic impedance of 58 Ω at a test current of 3.8 mA, a maximum reverse leakage current of 700 µA at 25 V, and a typical instantaneous forward voltage of 0.9 V at 10 mA.

Single Zener Diodes Feature Summary

• Utilizes planar die construction for stable electrical performance.
• Designed for automated assembly processes using tape and reel packaging.
• Complies with RoHS standards and contains no halogenated flame retardants.

Single Zener Diodes Applications

• Voltage regulation in low-power electronic circuits
• Clipping and clamping applications
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify the specific part number against official MCC documentation to ensure correct voltage rating and package type. Confirm that the procurement source is an authorized distributor to guarantee product authenticity and traceability. Check the latest datasheet revision for any updates to mechanical dimensions or electrical limits before finalizing component selection.

Single Zener Diodes Selection Notes

Select this component when a 33 V reference is required in a compact SOD-323 footprint. Ensure the circuit design accommodates the 200 mW power dissipation limit and the specified thermal resistance. Verify that the operating environment stays within the -55°C to 150°C junction temperature range for reliable operation.

Single Zener Diodes Part Context

This component belongs to the MMXZ5223B through MMXZ5259B series of 200 mW surface mount Zener diodes. All devices in this series share the same SOD-323 package and general mechanical specifications, differing primarily in their nominal Zener voltage ratings. The MMXZ5257B-TP specifically provides the 33 V variant within this standardized lineup.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 33 V Zener voltage, 200 mW power rating, and SOD-323 package. Other manufacturers offering equivalent specifications in the same footprint may serve as substitutes, provided their electrical parameters meet or exceed the original requirements.

Single Zener Diodes FAQ

What is the maximum reverse leakage current for the MMXZ5257B-TP?

The maximum reverse leakage current is 700 µA when measured at a reverse voltage of 25 V.

Does the MMXZ5257B-TP have a polarity marking on the package?

Yes, the cathode pin is indicated by a bar marking on the body of the device.