1SMA4747A

Single Zener Diodes Overview

The NextGen Components 1SMA4747A is a unidirectional surface mount silicon Zener diode housed in the DO-214AC (SMA) package. It features a nominal Zener voltage of 20V with a test current of 22mA and a maximum dynamic impedance of 5Ω at that current. The device supports a peak pulse power dissipation of 1.0W and operates within a junction temperature range of -55°C to +150°C. It includes built-in strain relief, a glass passivated junction, and complies with RoHS III and REACH directives.

Single Zener Diodes Feature Summary

• Glass passivated junction for enhanced reliability
• Built-in mechanical strain relief
• Low inductance design
• High temperature soldering capability

Single Zener Diodes Applications

• Surface mounted circuit board applications
• Voltage regulation circuits
• Surge protection components

Single Zener Diodes Procurement Notes

Verify the specific part code against official documentation before procurement. Confirm compliance requirements such as RoHS III and REACH status. Ensure the ordering suffix matches the required tape and reel packaging specifications. Cross-reference markings to validate authenticity and correct voltage rating.

Single Zener Diodes Selection Notes

Select this component for designs requiring a 20V reference or clamp in a compact SMA footprint. Consider the 1.0W peak pulse power rating for transient handling. Verify thermal derating curves if operating above 50°C ambient temperature. Ensure the low leakage current characteristics meet system sensitivity requirements.

Single Zener Diodes Part Context

This device belongs to the 1SMA series of surface mount Zener diodes manufactured by NextGen Components. The series utilizes a molded plastic body over a passivated junction within the JEDEC registered SMA/DO-214AC outline. It serves as a direct replacement for similar industry-standard Zener diodes in space-constrained electronic assemblies.

Single Zener Diodes Replacement Considerations

The datasheet lists MDD/1SMA4747A as a cross-reference part number. Verify pinout compatibility and electrical tolerances when substituting with other manufacturers' SMA packaged Zener diodes.