MMBZ5245A-HF

Single Zener Diodes Overview

The MMBZ5245A-HF is a single Zener diode manufactured by Comchip Technology, designed for surface-mount applications in the SOT-23-3 package. It features a nominal Zener voltage of 15 V with a tight tolerance of ±2%. The device supports a maximum power dissipation of 350 mW and operates within a junction temperature range of -55°C to +150°C. Key electrical characteristics include a test current of 5 mA, a maximum reverse leakage current of 5 µA at the rated voltage, and a Zener impedance of 30 Ohms.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a narrow ±2% tolerance for stable reference applications.
• Utilizes a compact SOT-23-3 surface-mount package suitable for space-constrained PCB designs.
• Engineered for high thermal stability with an extended operating junction temperature range up to +150°C.

Single Zener Diodes Applications

• Voltage reference circuits requiring high precision
• Over-voltage protection stages
• Clamping applications in signal processing

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability upon receipt. Ensure storage conditions adhere to moisture sensitivity level requirements to maintain solderability and long-term reliability during assembly processes.

Single Zener Diodes Selection Notes

Select this component when a 15 V reference with superior accuracy compared to standard 5% variants is required. The SOT-23-3 footprint offers a smaller profile than larger axial or DO-series packages. Consider the 350 mW power rating against expected thermal loads in the final enclosure design to ensure safe operation under continuous bias conditions.

Single Zener Diodes Part Context

This part belongs to the MMBZ series of small-signal Zener diodes from Comchip Technology. It serves as a surface-mount alternative to traditional axial-leaded components, enabling automated pick-and-place manufacturing. The series is characterized by low leakage currents and consistent breakdown voltages across production batches.

Single Zener Diodes Replacement Considerations

Direct pin-compatible substitutes may include other manufacturers' 15V Zener diodes in SOT-23 packages with matching ±2% tolerance and 350 mW ratings. Verify that replacement parts meet the same Zz (impedance) and Ir (leakage) specifications to maintain circuit performance integrity.

Single Zener Diodes FAQ

What is the typical Zener impedance for the MMBZ5245A-HF?

The specified Zener impedance (Zz) is 30 Ohms at the test current of 5 mA.

Does this component support automotive-grade temperatures?

Yes, the device is rated for a maximum junction temperature of +150°C, supporting operation in demanding thermal environments.