1N4737AE3/TR13

Overview

The 1N4737AE3/TR13 is a silicon Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 5.6 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and operates within an extended temperature range from -65°C to +150°C. Packaged in the DO-204AL (DO-41) axial leaded format, it is supplied in tape and reel packaging suitable for automated assembly processes.

Feature Summary

• Provides stable voltage regulation using silicon Zener technology
• Capable of handling high power dissipation up to 1 W
• Engineered for reliable operation across extreme industrial temperature ranges

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure compatibility with required packaging and tolerance specifications. Confirm RoHS compliance status through current datasheets. Cross-reference part numbers carefully as suffixes indicate variations in packaging or screening levels that do not alter electrical function but affect logistics and handling requirements.

Selection Notes

Select this component when a 5.6 V regulation point is required with 1 W power handling capability. Ensure the circuit design accommodates the specified thermal limits and operating temperature range. Verify that the axial package style fits the available board space and mounting constraints compared to surface mount alternatives.

Part Context

This component belongs to the standard 1N47xx series of 1 Watt Zener diodes widely used in discrete semiconductor applications. The 'e3' suffix indicates lead-free composition compliant with environmental directives. The TR13 designation specifies the tape and reel packaging format intended for high-volume automated placement equipment rather than manual assembly.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4737A variants meeting identical electrical specifications. Verify pinout compatibility and thermal resistance characteristics when replacing with components from different suppliers to ensure equivalent performance in the final assembly.