MMBZ5247B

Single Zener Diodes Overview

The onsemi MMBZ5247B is a single-channel Zener voltage regulator diode housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 17 V with a tolerance of ±5%. The device operates with a maximum power dissipation of 350 mW and features a low dynamic impedance of 19 Ohms at a test current of 20 mA. Maximum reverse leakage current is specified at 600 µA, while the forward voltage remains below 0.9 V at 10 mA. It supports a wide operating junction temperature range up to +150 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation for sensitive circuitry
• Compact surface-mount design for space-constrained applications
• Low dynamic impedance ensures consistent performance under varying load conditions

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog signal processing

Single Zener Diodes Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS compliance status through supplier documentation. Ensure storage conditions remain within the specified temperature range to maintain device integrity prior to assembly.

Single Zener Diodes Selection Notes

Select this component when a precise 17 V reference is required in a compact footprint. Consider the 350 mW power rating for thermal management in dense layouts. Evaluate the low leakage characteristics for high-impedance input applications requiring minimal current draw.

Single Zener Diodes Part Context

This device belongs to the MMBZ5221B-MMBZ5257B series of silicon Zener diodes manufactured by Fairchild Semiconductor, now part of onsemi. The series offers various voltage options in a standardized SOT-23 package, facilitating easy integration into consumer electronics and industrial control systems requiring reliable voltage regulation.

Single Zener Diodes Replacement Considerations

Equivalent parts include MMBZ5247BT1G and MMBZ5247BLT1. Verify pinout compatibility and electrical parameter alignment before substitution.