SMZJ3796B-M3/5B

Single Zener Diodes Overview

The SMZJ3796B-M3/5B is a surface mount power voltage-regulating diode manufactured by Vishay General Semiconductor. It operates within the SMZJ3788B through SMZJ3809B series and utilizes a DO-214AA (SMB) case package. The device features a glass passivated chip junction and provides a nominal Zener voltage of 20 V with a tolerance range of 19.0 V to 21.0 V. It supports a maximum steady-state power dissipation of 1500 mW at a lead temperature of 75 °C. The component exhibits a maximum Zener impedance of 14 Ω at a test current of 18.7 mA and maintains a maximum reverse leakage current of 5.0 μA at 15.2 V. It functions reliably across an operating junction and storage temperature range from -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Features a low profile SMB (DO-214AA) package designed for automated placement applications.
• Incorporates a glass passivated chip junction for enhanced stability and reliability.
• Delivers low Zener impedance and a low regulation factor for precise voltage control.
• Complies with JESD 201 class 2 whisker testing requirements.

Single Zener Diodes Applications

• General purpose voltage regulation circuits
• Industrial equipment protection systems
• Overvoltage suppression in electronic assemblies

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required packaging quantity, as the /5B designation indicates a specific reel size. Confirm compliance requirements such as halogen-free status and RoHS adherence based on the M3 suffix. Ensure the application environment remains within the specified thermal limits to maintain the rated power dissipation. Validate that the selected part number aligns with the intended single circuit configuration and unidirectional polarity markings.

Single Zener Diodes Selection Notes

Select this component when a 20 V reference or clamp is required in a surface mount design. The SMB package offers a balance between power handling and board space efficiency compared to larger axial leads. Consider the 14 Ω dynamic impedance for noise-sensitive regulation tasks. Verify that the 1500 mW power rating accommodates the expected continuous current without exceeding the thermal derating curve at elevated ambient temperatures.

Single Zener Diodes Part Context

This device belongs to the SMZJ series of surface mount power voltage-regulating diodes produced by Vishay General Semiconductor. The series spans Zener voltages from 9.1 V to 68 V, providing options for various reference needs. All parts share the same DO-214AA mechanical footprint and glass passivation technology. The M3 suffix denotes a halogen-free, RoHS-compliant commercial grade variant suitable for modern manufacturing processes.

Single Zener Diodes Replacement Considerations

Direct replacements within the same Vishay family include the SMZJ3796B-E3/5B for standard RoHS compliance or the SMZJ3796BHE3/5B if AEC-Q101 automotive qualification is required. Cross-manufacturer substitutes must match the 20 V nominal voltage, 1.5 W power rating, and DO-214AA package dimensions to ensure physical and electrical compatibility.