SMBZ5927B-M3/5B

Single Zener Diodes Overview

The SMBZ5927B-M3/5B is a surface-mount power voltage-regulating diode manufactured by Vishay General Semiconductor. It features a nominal Zener voltage of 12 V with a tolerance of ±5%. The device operates within a reverse current range of 0.25 mA to 31.2 mA and exhibits a maximum Zener impedance of 6.5 Ω at the test current. Maximum reverse leakage current is specified at 1 µA under a reverse voltage of 9.1 V. The component supports a maximum DC Zener current of 125 mA and withstands a maximum steady-state power dissipation of 3000 mW at a lead temperature of 75 °C, or 550 mW at an ambient temperature of 25 °C. It utilizes an SMB (DO-214AA) package and functions across a junction and storage temperature range of -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Low profile package designed for automated placement
• Low Zener impedance and low regulation factor
• Meets MSL level 1 per J-ST D-020 with a maximum peak of 260 °C
• Halogen-free, RoHS-compliant commercial grade

Single Zener Diodes Applications

• General purpose voltage regulation
• Circuit protection applications

Single Zener Diodes Procurement Notes

Verify that the ordering suffix /5B corresponds to the 3200-unit base quantity on a 13-inch diameter plastic tape and reel. Confirm compliance requirements such as halogen-free status and whisker testing standards associated with the M3 designation. Ensure thermal derating curves are consulted for accurate power dissipation calculations based on specific mounting pad layouts and ambient conditions.

Single Zener Diodes Selection Notes

Select this component when a single configuration surface-mount Zener diode with a 12 V nominal breakdown is required. Consider the 3 W power rating capability at elevated lead temperatures versus the 550 mW limit at standard ambient conditions. Evaluate the 6.5 Ω maximum dynamic impedance for precision regulation needs. Verify that the SMB footprint aligns with the target PCB design constraints.

Single Zener Diodes Part Context

This part belongs to the SMBZ5919B through SMBZ5945B series from Vishay General Semiconductor. These devices are silicon planar Zener diodes housed in the SMB (DO-214AA) case. The series covers a wide Zener voltage spectrum ranging from 5.6 V to 68 V. They are engineered for surface-mounted applications to optimize board space while providing robust voltage regulation capabilities.

Single Zener Diodes Replacement Considerations

SMBZ5927B-E3/5B