1N4735A-T

Overview

The Diodes Incorporated 1N4735A-T is a discontinued silicon planar power Zener diode housed in a DO-41 glass case. It provides a nominal Zener voltage of 6.2 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1.0 W at 25°C, derating linearly above this temperature. Electrical characteristics include a test current of 41 mA, a maximum Zener impedance of 2 Ω, and a maximum reverse leakage current of 10 µA. The component operates within a junction and storage temperature range of -65°C to +175°C.

Feature Summary

• Utilizes a hermetically sealed glass DO-41 package for environmental protection.
• Features a standard 5% Zener voltage tolerance for general regulation applications.
• Supports high surge currents up to 730 mA for transient protection scenarios.

Applications

• Voltage reference circuits requiring stable DC levels.
• Overvoltage protection for sensitive electronic components.
• General-purpose clipping and clamping applications.

Procurement Notes

This specific part number is officially marked as obsolete and discontinued by the manufacturer. No alternate replacement parts are currently available from Diodes Incorporated for this exact specification. Procurement efforts should focus on identifying equivalent specifications from other manufacturers or utilizing existing stock, as direct sourcing from the original producer is no longer possible.

Selection Notes

Selection requires verifying that the 6.2 V nominal voltage aligns with circuit requirements. Designers must account for the 1.0 W power dissipation limit and apply appropriate thermal derating for ambient temperatures exceeding 50°C. The DO-41 through-hole package dictates specific PCB footprint constraints. Verify that the ±5% tolerance meets the precision needs of the target application.

Part Context

The 1N4735A belongs to the broader 1N4728A through 1N4761A series of 1.0 Watt Zener diodes manufactured by Diodes Incorporated. This series covers a wide voltage range from 3.3V to 75V. The 'T' suffix indicates the component was supplied in tape and reel packaging, typically for automated assembly processes.

Replacement Considerations

Diodes Incorporated has confirmed there is no alternate part available for this obsolete component. Engineers must source cross-manufacturers equivalents such as those from Nexperia or Microchip that match the 6.2V, 1W, and DO-41 specifications.