SMBZ5919B-M3/5B

Single Zener Diodes Overview

The SMBZ5919B-M3/5B is a surface-mount power voltage-regulating diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 5.6 V with a tolerance range of 5.32 V to 5.88 V at a test current of 66.9 mA. The device operates in the DO-214AA (SMB) package and provides a maximum steady-state power dissipation of 550 mW at 25 °C ambient temperature, scaling up to 3000 mW when mounted on leads at 75 °C. Electrical characteristics include a maximum Zener impedance of 5 Ω at 1 mA reverse current and a maximum reverse leakage current of 200 µA at 3 V. The component supports an operating junction and storage temperature range from -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Low profile package designed for automated placement
• Low Zener impedance and low regulation factor
• Halogen-free, RoHS-compliant commercial grade construction

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 13-inch diameter plastic tape and reel delivery mode with a base quantity of 3200 units. Confirm compliance requirements such as halogen-free status and RoHS directives match project specifications. Ensure thermal management aligns with the specified power derating curves for lead-mounted versus ambient-temperature operation.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 5.6 V reference or clamp within the SMB surface-mount footprint. Consider the 550 mW power rating at 25 °C for thermal design constraints. Verify that the 5 Ω dynamic impedance meets circuit sensitivity requirements. Compare against other voltage ratings in the SMBZ5919B through SMBZ5945B series if different voltage levels are needed.

Single Zener Diodes Part Context

This part belongs to the SMBZ5919B thru SMBZ5945B series of surface-mount power voltage-regulating diodes. The series covers a wide Zener voltage range from 5.6 V to 68 V. All devices share the same DO-214AA mechanical outline and similar electrical testing conditions, allowing for consistent board layout across different voltage requirements within the same product family.

Single Zener Diodes Replacement Considerations

SMBZ5919B-M3/52 is a parameter-equivalent alternative available in the same series but packaged in a 7-inch tape and reel format.