1N4758AHB0G

Overview

The 1N4758AHB0G is a silicon unidirectional Zener diode manufactured by Taiwan Semiconductor. It features a nominal Zener voltage of 56 V with a tolerance of 5% and a power dissipation rating of 1 W. The device utilizes a DO-204AL (DO-41) through-hole package. Key electrical characteristics include a maximum dynamic impedance of 110 Ohms and a maximum reverse leakage current of 5 uA at the test current of 4.5 mA. It operates within a temperature range of -55°C to +150°C and holds AEC-Q101 qualification.

Feature Summary

• Hermetically sealed glass compression bonded construction for stability
• AEC-Q101 qualified for automotive reliability standards
• Corrosion resistant external surfaces with solderable terminals

Applications

• Automotive voltage regulation circuits
• General purpose industrial stabilization
• Clipping and protection applications

Procurement Notes

Verify the specific suffix HB0G against the manufacturer's official datasheet to confirm the exact packaging configuration, as suffixes often denote bulk or tape-and-reel variations. Ensure the procurement documentation explicitly states AEC-Q101 compliance if automotive grade certification is required for the design. Cross-reference the DO-204AL package dimensions with the mechanical drawings provided in the official specification sheet.

Selection Notes

Select this component when a 56 V reference is needed in a high-reliability environment requiring AEC-Q101 certification. The 1 W power rating in a DO-41 package suits applications where moderate power handling is necessary without excessive board space. Consider the 110 Ohm dynamic impedance for regulation precision requirements compared to lower impedance alternatives.

Part Context

This part belongs to the 1N4758AH series of 1W Zener diodes from Taiwan Semiconductor. The 'H' typically denotes hermetic sealing, while 'HB0G' specifies the automotive-grade qualification and specific packaging format. This series is designed to replace standard military-grade 1N47xx components in modern automotive and industrial designs requiring higher reliability.

Replacement Considerations

Direct replacements include other manufacturers' 1N4758A parts, such as those from onsemi or Panjit, provided they meet the same 56V/1W/DO-41 specifications. For automotive applications, ensure substitutes also carry AEC-Q101 certification. Generic 1N4758 variants may lack the hermetic seal or specific thermal ratings.