SML4730A-E3/5A

Single Zener Diodes Overview

The SML4730A-E3/5A is a surface mount Zener diode in the DO-214AC (SMA) package. It provides a nominal Zener voltage of 3.9 V with a ±5% tolerance. The device dissipates up to 1 W at 75 °C and operates within a junction temperature range of -65 °C to +150 °C. Electrical characteristics include a maximum reverse current of 50 μA, a dynamic impedance of 9 Ω, and a surge current rating of 400 mA peak.

Single Zener Diodes Feature Summary

• Low Zener impedance for stable regulation
• High temperature soldering capability
• UL 94 V-0 flammability classification

Single Zener Diodes Applications

• Voltage regulation circuits
• Surge protection applications
• General purpose surface mounted electronics

Single Zener Diodes Procurement Notes

Verify compliance with RoHS directives and AEC-Q101 automotive qualification standards before procurement. Confirm that the specific ordering suffix matches the required tape and reel packaging configuration. Ensure all technical parameters align with the target application requirements prior to finalizing orders.

Single Zener Diodes Selection Notes

Select this component when a 3.9 V reference is required in a compact SMA footprint. Consider the low dynamic impedance for precision regulation needs. Evaluate the thermal dissipation limits against the expected operating environment to ensure reliable performance under continuous load conditions.

Single Zener Diodes Part Context

This part belongs to the Vishay SML4728 to SML4764A series of surface mount Zener diodes. The series covers a wide voltage range from 3.3 V to 100 V. All devices share the same DO-214AC mechanical outline and are designed for high-density mounting on printed circuit boards.

Single Zener Diodes Replacement Considerations

Direct replacements within the same Vishay series include SML4730A-E3/61, which shares identical electrical specifications but utilizes a different 7-inch tape and reel packaging format.