1N5260B

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5260B is a silicon unidirectional Zener voltage regulator diode housed in a DO-35 glass axial-lead package. It provides a nominal reference voltage of 43 V with a tolerance of 5%. The device supports a maximum power dissipation of 0.5 W and operates within a temperature range of -65 °C to +200 °C. Key electrical characteristics include a maximum dynamic impedance of 93 Ω, a test current of 3 mA, and a forward voltage of 1.02 V maximum at 10 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for environmental protection
• High thermal stability with extended operating temperature range
• Standardized voltage regulation with tight tolerance accuracy

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as Philips/NXP and Microchip also produce this part number. Confirm RoHS compliance status, as older Philips versions may not meet current standards. Ensure the package matches the required DO-35 form factor and lead finish specifications for your assembly process.

Single Zener Diodes Selection Notes

Select this component when a precise 43 V regulation point is needed in through-hole designs. Consider the 93 Ω dynamic impedance for noise sensitivity requirements. Verify that the 0.5 W power rating suffices for the expected load current without excessive heat sinking.

Single Zener Diodes Part Context

This component belongs to the widely used 1N52xx series of low-power Zener diodes. It serves as a standard replacement for legacy designs requiring reliable voltage regulation. The DO-35 package ensures compatibility with existing printed circuit board layouts designed for axial-leaded components.

Single Zener Diodes Replacement Considerations

Equivalent parts include Rectron 1N5260B-B and Microsemi MV1N5260B-1TR. CDI-DIODE offers the CD5260B variant. Microchip Technology produces the 1N5260B/TR version.