1N4742A B0G

Overview

The Taiwan Semiconductor 1N4742A B0G is a single-channel voltage regulator diode housed in a DO-41 through-hole package. It features a nominal Zener voltage of 12 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within a temperature range of -65°C to +200°C. Key electrical parameters include a test current of 21 mA, a maximum Zener impedance of 9 Ω, and a maximum reverse leakage current of 5 μA.

Feature Summary

• Hermetically sealed glass construction for corrosion resistance
• Compression bonded internal design
• Pure tin plated terminals ensuring solderability

Applications

• Voltage stabilization circuits
• General purpose voltage regulation
• Protection against transient overvoltages

Procurement Notes

Verify the specific suffix 'B0G' against the manufacturer's official datasheet to confirm packaging details and compliance status. Ensure the component matches the required DO-41 form factor and lead finish specifications before integration into production workflows.

Selection Notes

Select this component for applications requiring robust through-hole mounting and high thermal stability up to 200°C. The 1W power rating and low leakage current make it suitable for precision regulation tasks where environmental durability is critical.

Part Context

This part belongs to the standard 1N47xx series of silicon Zener diodes manufactured by Taiwan Semiconductor. These devices are widely used in industrial electronics due to their reliable performance and standardized mechanical dimensions compatible with legacy PCB designs.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4742A specification. Verify that substitute parts maintain identical Zener voltage, power dissipation, and package compatibility.