MMBZ5262B-E3-18

Single Zener Diodes Overview

The MMBZ5262B-E3-18 is a single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 51 V with a tolerance of ±5%. The device has a maximum power dissipation of 225 mW and is housed in an SOT-23-3 surface-mount package. Key electrical characteristics include a maximum Zener impedance (Zzt) of 125 Ohms and a reverse leakage current of 100 nA at 39 V. The component operates within a temperature range of -55°C to 150°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 51 V level for circuit protection applications.
• Utilizes a compact SOT-23-3 surface-mount package suitable for space-constrained designs.
• Operates reliably across a wide industrial temperature range from -55°C to +150°C.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 51 V stabilization.
• Over-voltage protection for sensitive electronic components.
• Clamping applications in signal processing paths.

Single Zener Diodes Procurement Notes

This component is officially obsolete and no longer manufactured as per Product Change Notification Mult Dev EOL dated November 12, 2021. Procurement should focus on verified replacement parts such as BZX84C51LT1G or CMPZ5262B TR PBFREE. Verify RoHS3 compliance and ensure the substitute matches the SOT-23-3 footprint and 51 V specification.

Single Zener Diodes Selection Notes

Select this part only if legacy compatibility is required, noting its discontinued status. For new designs, consider active alternatives like the MMSZ5262B-E3-18 which offers higher power handling in an SOD-123 package. Ensure the selected replacement maintains the 51 V Zener voltage and compatible thermal characteristics for the intended application environment.

Single Zener Diodes Part Context

The MMBZ5262B-E3-18 belongs to the MMBZ5262 series of dual-series Zener diodes, though configured here as a single unit. It is part of Vishay's general-purpose diode portfolio designed for surface-mount assembly. The 'E3' suffix indicates lead-free construction compliant with RoHS standards. This specific variant was widely used in consumer electronics before obsolescence.

Single Zener Diodes Replacement Considerations

Officially listed substitutes include BZX84C51LT1G (onsemi), CMPZ5262B TR PBFREE (Central Semiconductor Corp), and SZMMBZ5262BLT1G (onsemi). Verify pinout compatibility and power derating curves when transitioning to these alternatives.