1N5246B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5246B-T is a discontinued epitaxial Zener diode with a nominal voltage of 16V and a tolerance of ±5%. It features a maximum power dissipation of 500mW and operates within a temperature range of -65°C to +175°C. The device utilizes a DO-35 glass axial-lead package and offers a maximum reverse current of 0.1µA at 12V. Electrical characteristics include a test current of 7.8mA, a maximum Zener impedance of 17Ω, and a temperature coefficient of +0.083%/°C.

Single Zener Diodes Feature Summary

• Epitaxial construction for high stability
• Hermetic glass-sealed DO-35 package
• Lead-free finish compliant with RoHS directives

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Voltage reference applications
• Overvoltage protection

Single Zener Diodes Procurement Notes

This component is officially marked as obsolete and discontinued by the manufacturer. Sourcing new units from authorized channels is not possible. Buyers must verify the authenticity and condition of any available surplus stock carefully. Procurement should focus on identifying verified replacement components that meet the required electrical specifications and package dimensions.

Single Zener Diodes Selection Notes

Designers seeking this specific part number must transition to surface mount equivalents due to its discontinuation. The MMSZ52xxB series serves as the designated replacement family. Selection requires matching the 16V nominal voltage, 500mW power rating, and ±5% tolerance while adapting the design for the smaller SOD-123 footprint.

Single Zener Diodes Part Context

The 1N5246B belongs to the 1N5221B through 1N5267B series of 500mW Zener diodes manufactured by Diodes Incorporated. This series provides a wide selection of standard voltages in a traditional glass axial-lead package. The product line has been phased out in favor of modern surface mount technologies.

Single Zener Diodes Replacement Considerations

The datasheet explicitly identifies the MMSZ52xxB series as the recommended replacement for the obsolete 1N5221B-1N5267B lineup. Designers should evaluate the MMSZ5246B or equivalent surface mount devices to maintain circuit functionality.

Single Zener Diodes FAQ

What is the thermal resistance of the junction to ambient air?

The thermal resistance (RθJA) is specified as 300 °C/W.

Is the 1N5246B-T currently in production?

No, the component is officially obsolete and discontinued by Diodes Incorporated.