1N4754A-T

Overview

The 1N4754A-T is a discontinued single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 39 V with a tolerance of ±5%. The component is rated for a maximum power dissipation of 1 W and utilizes the DO-41 axial through-hole package. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 29.6 V and a forward voltage of 1.2 V at 200 mA. The device supports a maximum junction temperature of 175°C and complies with RoHS3 standards.

Feature Summary

• Provides stable voltage regulation within a 5% tolerance band for precision circuit applications.
• Constructed with glass case material offering UL flammability classification rating 94V-0.
• Features tin-silver alloy terminals ensuring solderability per MIL-STD-208 standards.

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in low-power electronic systems
• Clipping and clamping applications in signal processing

Procurement Notes

This specific part number is officially obsolete and no longer in production. Verification of availability should focus on alternative packaging suffixes such as TR or TAP, which may remain active. Sourcing requires confirmation of current manufacturing status directly from the distributor or manufacturer to ensure authenticity and compliance with RoHS3 specifications.

Selection Notes

Designers seeking this component must evaluate active alternatives due to its discontinued status. Selection criteria should prioritize matching the 39 V Zener voltage, 1 W power rating, and DO-41 through-hole form factor. Verify that substitute components maintain equivalent thermal performance and leakage characteristics suitable for the intended operating environment.

Part Context

The 1N4754A belongs to the standard 1N47xx series of 1-watt Zener diodes produced by Vishay. This series is widely recognized for general-purpose voltage regulation tasks. The 'T' suffix typically denotes tape-and-reel packaging, though availability varies by production batch. The component represents a legacy option within Vishay's extensive discrete semiconductor portfolio.

Replacement Considerations

Direct substitutes include the 1N4754A-TR and 1N4754A-TAP from Vishay General Semiconductor - Diodes Division. These variants share identical electrical specifications and mechanical dimensions but differ in packaging format. Cross-reference with other manufacturers' 1N4754 equivalents if Vishay stock is unavailable.