ZMM5226B-7

Single Zener Diodes Overview

The ZMM5226B-7 is a surface mount silicon planar power Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It provides a nominal Zener voltage of 3.3 V with a tolerance range of 3.14 V to 3.47 V at a test current of 20 mA. The device features a maximum power dissipation of 500 mW and operates within a junction temperature range of -65 °C to +175 °C. Key electrical characteristics include a maximum Zener impedance of 28 Ω, a maximum reverse leakage current of 25 µA at 1 V, and a typical forward voltage of 1.5 V at 200 mA.

Single Zener Diodes Feature Summary

• Hemitec glass package designed for surface mount applications
• Silicon planar construction ensuring stable voltage regulation
• Wide operating and storage temperature capability up to 175 °C

Single Zener Diodes Applications

• Voltage reference circuits requiring precise low-voltage regulation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm exact packaging and testing configurations. Ensure that the component meets all required environmental standards and thermal management specifications for the intended operational environment before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a compact surface mount solution is required for 3.3 V regulation. Consider the 500 mW power dissipation limit and the thermal resistance characteristics relative to the ambient temperature conditions. Evaluate the 28 Ω impedance value to ensure it meets the dynamic performance requirements of the target circuit design.

Single Zener Diodes Part Context

This part belongs to the ZMM5221B through ZMM5267B series of 500 mW surface mount Zener diodes. The series utilizes a MiniMELF (DO-213AA) case outline, providing a standardized footprint for automated assembly processes. The 'B' suffix indicates a standard ±5% voltage tolerance, distinguishing it from other precision variants within the broader product family.

Single Zener Diodes Replacement Considerations

Cross-reference with equivalent MiniMELF packaged Zener diodes offering identical 3.3 V nominal voltage and 500 mW power rating. Verify compatibility regarding thermal resistance, maximum junction temperature limits, and physical dimensions to ensure seamless integration into existing PCB layouts without redesign.

Single Zener Diodes FAQ

What is the thermal resistance from junction to ambient air?

The thermal resistance from junction to ambient air is specified as 300 °C/W.

Does the device exhibit polarity indication?

Yes, the cathode band marking on the package indicates the polarity of the diode.