SMPZ3934B-E3/85A

Single Zener Diodes Overview

The SMPZ3934B-E3/85A is a surface mount power voltage-regulating diode from the Vishay eSMP series, housed in an SMP (DO-220AA) package. It provides a nominal Zener voltage of 24 V with a tolerance range of 22.8 V to 25.2 V at a test current of 15.6 mA. The device features a maximum Zener impedance of 19.0 Ω and a reverse leakage current of 0.5 μA at 18.2 V. It supports a maximum DC Zener current of 63 mA and operates within a junction temperature range of -65 °C to +150 °C.

Single Zener Diodes Feature Summary

• Very low profile construction suitable for automated placement
• Low Zener impedance and low regulation factor
• Meets MSL level 1 per J-STD-020 with LF maximum peak of 260 °C
• Halogen-free, RoHS-compliant base part number

Single Zener Diodes Applications

• General purpose regulation
• Industrial applications
• Protection applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging quantity and delivery mode. Confirm that the component meets required environmental compliance standards such as RoHS and REACH before procurement. Ensure thermal management aligns with specified derating curves for the intended operating environment.

Single Zener Diodes Selection Notes

Select this component based on the required nominal Zener voltage and the specific impedance characteristics needed for the circuit. Evaluate the power dissipation requirements against the thermal resistance values provided in the datasheet. Verify that the package dimensions fit the available PCB layout constraints.

Single Zener Diodes Part Context

This component belongs to the SMPZ39XB through SMPZ3940B family of surface mount power voltage-regulating diodes manufactured by Vishay General Semiconductor. These devices are designed for general-purpose regulation and protection tasks in industrial environments.

Single Zener Diodes Replacement Considerations

Direct replacements within the same Vishay series include SMPZ3934B-M3/85A. Cross-manufacturer equivalents must be verified against electrical parameters including Zener voltage, impedance, and package type.