SMBZ5935B-M3/5B

Single Zener Diodes Overview

The SMBZ5935B-M3/5B is a surface-mount power voltage-regulating diode manufactured by Vishay General Semiconductor. It features a nominal Zener voltage of 27 V with a tolerance range of 25.7 V to 28.4 V at a test current of 13.9 mA. The device operates in the SMB (DO-214AA) package and provides a maximum steady-state power dissipation of 550 mW at 25 °C ambient temperature, or 3000 mW when mounted on leads at 75 °C. Electrical characteristics include a maximum Zener impedance of 23 Ω and a reverse leakage current of 1 µA at 20.6 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 suitable for automated placement
• Low Zener impedance and low regulation factor
• Meets MSL level 1 per J-ST D-020

Single Zener Diodes Applications

• General purpose regulation applications
• Protection applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm compliance attributes. The M3 suffix indicates halogen-free, RoHS-compliant, commercial grade material. Confirm the delivery mode matches the required base quantity, as the /5B suffix corresponds to a 3200-unit reel. Ensure thermal management aligns with the specified power derating curves for the intended application environment.

Single Zener Diodes Selection Notes

Select this component based on the required 27 V regulation point and the available power dissipation capabilities within the SMB package. Consider the thermal resistance values provided in the datasheet to ensure the junction temperature remains within limits under maximum load conditions. Verify that the reverse leakage current and Zener impedance specifications meet the circuit requirements for noise and stability.

Single Zener Diodes Part Context

This part belongs to the SMBZ5919B through SMBZ5945B series of surface-mount power voltage-regulating diodes. The series covers a wide range of Zener voltages from 5.6 V to 68 V. All devices in this family share the same physical SMB (DO-214AA) package dimensions and mechanical mounting characteristics, allowing for consistent board layout across different voltage requirements.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include SMBZ5935B-E3/5B and SMBZ5935B-E3/52. These variants maintain identical electrical performance but differ in material composition and packaging quantities. Cross-brand replacements require matching the Zener voltage, power rating, and package footprint.