SML4738-E3/5A

Single Zener Diodes Overview

The SML4738-E3/5A is a surface mount Zener diode from the Vishay SML4728 to SML4764A series, housed in a DO-214AC (SMA) package. It provides an 8.2 V nominal Zener voltage with a ±5% tolerance. The device operates at a test current of 31 mA and features a dynamic impedance of 4.5 Ω. It supports a maximum power dissipation of 1 W and withstands surge currents up to 700 mA.

Single Zener Diodes Feature Summary

• Low Zener impedance for stable regulation
• Low regulation factor
• High temperature soldering capability

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Power supply regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix 'E3/5A' against official documentation to confirm RoHS compliance and the precise ±5% voltage tolerance. Ensure the ordering code matches the required taped reel quantity and packaging format before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a compact SMA footprint is required for 8.2 V regulation. Consider the 1 W power dissipation limit and the 4.5 Ω dynamic impedance for circuit stability. Verify thermal management requirements for continuous operation near the maximum junction temperature.

Single Zener Diodes Part Context

This part belongs to the SML4728 to SML4764A family of surface mount Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 3.3 V to 100 V in the DO-214AC package, offering standardized electrical characteristics for general-purpose voltage regulation applications.

Single Zener Diodes Replacement Considerations

Equivalent parts include the SML4738HE3_A/H and other SML4738 variants within the same Vishay series. Cross-reference with JEDEC registered 1N4738A equivalents if through-hole mounting is acceptable, noting the difference in power rating and package type.

Single Zener Diodes FAQ

What does the 'A' suffix indicate in the ordering code?

The 'A' suffix denotes a standard voltage tolerance of ±5%, compared to the standard ±10% tolerance.

Is this component AEC-Q101 qualified?

Yes, the SML4728 to SML4764A series is AEC-Q101 qualified.