1SMA4747-GT3

Single Zener Diodes Overview

The 1SMA4747-GT3 is a unidirectional voltage regulator diode manufactured by SMC Diode Solutions. It features a nominal Zener voltage of 20 V with a maximum power dissipation of 1.25 W. The component utilizes the DO-214AC (SMA) surface-mount package and offers a tolerance of ±5%. Electrical characteristics include a maximum dynamic impedance of 9 Ohms and a typical reverse leakage current of less than 5.0 µA at voltages above 11 V. It operates within a temperature range of -65°C to 150°C.

Single Zener Diodes Feature Summary

• Built-in strain relief for mechanical stability in surface-mounted applications
• Glass passivated junction ensuring high reliability
• Low inductance design suitable for high-speed switching
• Plastic package classified as UL Flammability Rating 94V-O

Single Zener Diodes Applications

• Voltage regulation circuits requiring compact form factors
• Protection against transient voltage spikes in electronic systems
• General-purpose clamping applications in consumer electronics

Single Zener Diodes Procurement Notes

Verify the specific GT3 suffix designation against official manufacturer documentation to confirm packaging specifications and compliance status. Ensure that the DO-214AC package dimensions align with your PCB footprint requirements. Cross-reference the electrical parameters, particularly the 20 V Zener voltage and 1.25 W power rating, with your circuit design constraints. Confirm RoHS and REACH compliance details directly from the datasheet before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a 20 V regulation point is required in a space-constrained surface-mount environment. The 1.25 W power rating provides higher capacity compared to standard 1 W SMA variants. Consider the low leakage current and fast response characteristics for sensitive signal lines. Ensure the operating temperature range meets the environmental conditions of the target application.

Single Zener Diodes Part Context

This device belongs to the 1SMA47 series of silicon Zener diodes produced by SMC Diode Solutions. The series covers a wide voltage range from 3.3 V to 100 V, all housed in the standardized DO-214AC package. These components are designed to optimize board space while maintaining robust performance in various industrial and commercial electronic applications.

Single Zener Diodes Replacement Considerations

Compatible substitutes include the 1N5820 or 1SMA4747 from other manufacturers offering identical 20 V, 1.25 W specifications in the DO-214AC package. Verify pinout compatibility and thermal characteristics before substitution.