1N4748G

Overview

The Taiwan Semiconductor 1N4748G is a single-die, hermetically sealed glass passivated junction silicon Zener diode designed for voltage regulation and reference applications. It operates within the 1N4728G to 1N4758G series, featuring a nominal Zener voltage of 22V with a ±5% tolerance. The device is housed in a DO-41 axial lead package and supports a maximum power dissipation of 1W at 25°C. It withstands junction temperatures ranging from -65°C to +200°C, ensuring reliable performance across diverse industrial environments.

Feature Summary

• Hermetically sealed glass construction provides corrosion resistance and long-term stability
• Low profile DO-41 package design facilitates through-hole mounting on printed circuit boards
• Built-in strain relief enhances mechanical robustness during soldering and operation
• Pure tin plated leads ensure high solderability compliant with J-STD-002 standards

Applications

• Low voltage stabilizers or voltage references
• Adapters
• Lighting application
• On-board DC/DC converter

Procurement Notes

Verify that the ordering suffix matches the required packing format, as R0G indicates a 5,000-unit reel while A0G denotes an ammo box configuration. Confirm RoHS compliance status based on specific manufacturing batches. Ensure the procurement documentation explicitly lists the 1N4748G part number to avoid confusion with similar series components. Cross-reference the date code and factory code markings against the manufacturer's latest quality certificates.

Selection Notes

Select this component when a precise 22V reference point is required in a standard axial package. The 1W power rating allows for moderate current handling without excessive thermal management. Consider the ±5% voltage tolerance for general-purpose regulation tasks where tight precision is not critical. Evaluate the thermal resistance values if the operating environment exceeds standard ambient temperature limits.

Part Context

This device belongs to the 1N47xxG series of 1-watt Zener diodes manufactured by Taiwan Semiconductor. The series covers a wide voltage range from 3.3V to 56V, utilizing a consistent DO-41 glass-passivated package. The 'G' suffix typically denotes RoHS-compliant variants within the product line. These diodes are engineered for general-purpose voltage regulation in consumer electronics and industrial control systems.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4748A or 1N4748B equivalents provided they meet the 22V nominal voltage, 1W power dissipation, and DO-41 package constraints. Verify that replacement parts offer comparable Zener impedance and leakage current specifications to maintain circuit performance integrity.