1N4732A G

Overview

The Microsemi Corporation 1N4732A G is a silicon unidirectional voltage regulator diode designed for general-purpose applications. It operates within the DO-41 axial leaded package, providing a nominal Zener voltage of 4.7 V with a maximum power dissipation of 1 W at an ambient temperature of 25°C. The device features a standard tolerance of ±5% and a maximum Zener impedance of 8 Ohms. It supports a wide operating temperature range from -65°C to +150°C and includes built-in strain relief for mechanical stability.

Feature Summary

• Provides stable voltage regulation using a single silicon junction in a glass-encapsulated axial package
• Features built-in strain relief to enhance mechanical durability during soldering and operation
• Offers high stability Zener voltage characteristics suitable for precision reference circuits

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement instrumentation

Procurement Notes

Verify the specific suffix 'G' against official Microsemi documentation to confirm compliance status and material composition. Confirm availability as distribution channels may list obsolete or transferred inventory. Ensure the procurement source provides valid traceability data for the semiconductor batch. Cross-reference the manufacturer part number with current datasheets to validate electrical parameters before integration into designs.

Selection Notes

Select this component when a 1 W through-hole Zener diode with a 4.7 V breakdown voltage is required. The DO-41 package is appropriate for standard PCB mounting where space constraints are not critical. Consider the ±5% tolerance for general regulation tasks rather than high-precision applications requiring tighter specifications. Evaluate thermal management requirements given the 1 W power rating and operating temperature limits.

Part Context

This component belongs to the widely recognized 1N47 series of 1 W Zener diodes. Originally standardized by JEDEC, these parts are manufactured by various vendors including Microsemi and onsemi. The 1N4732 designation specifically identifies the 4.7 V variant within this family, ensuring interchangeability across different manufacturers provided the package and electrical tolerances match the design requirements.

Replacement Considerations

Equivalent parts include the onsemi 1N4732A and TAITRON Components 1N4732A. Verify that replacement units maintain the same DO-41 package dimensions and 1 W power rating. Check if alternative sources offer RoHS-compliant versions if environmental regulations apply to the final assembly.