1N4758AH

Overview

The 1N4758AH is a single silicon Zener diode manufactured by Taiwan Semiconductor Corporation. It features a nominal Zener voltage of 56V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1W at ambient temperatures up to 50°C, utilizing the DO-204AL (DO-41) axial through-hole package. It operates within a junction temperature range of -65°C to +175°C and exhibits a maximum dynamic impedance of 110 ohms at the test current.

Feature Summary

• Utilizes silicon-oxide passivation technology for stable electrical characteristics
• Designed for high reliability in regulated power supply applications
• Compliant with RoHS standards and lead-free manufacturing processes

Applications

• Voltage regulation in DC power supplies
• Overvoltage protection circuits
• Reference voltage generation in electronic systems

Procurement Notes

Verify the specific suffix AH indicates the axial through-hole configuration compatible with DO-204AL packages. Confirm RoHS compliance status matches project requirements. Ensure the manufacturer is identified as Taiwan Semiconductor Corporation to distinguish from other vendors using similar part numbers. Check datasheet revisions for any updates on thermal resistance or mechanical dimensions before finalizing procurement specifications.

Selection Notes

Select this component when a 56V reference voltage is required in space-constrained axial layouts. The 1W power rating supports moderate current loads without excessive heat sinking. Consider the ±5% tolerance for precision applications requiring tighter voltage control. Evaluate the operating temperature range against environmental conditions to ensure long-term stability under thermal stress.

Part Context

This component belongs to the standard 1N47xx series of Zener diodes, widely used for basic voltage regulation tasks. The 1N4758AH variant specifically targets the 56V breakdown region within this family. It serves as a fundamental discrete semiconductor element in analog circuit design, providing a stable potential difference across its terminals when operated in reverse bias mode.

Replacement Considerations

Cross-reference with 1N4758A from other manufacturers like onsemi or Panjit, ensuring identical voltage, power, and package specifications. Verify that substitute parts maintain the same DO-41 form factor and electrical tolerances for direct pin-compatible replacement.