1N5238B

Single Zener Diodes Overview

The Microchip Technology 1N5238B is a 0.5 W glass axial-lead Zener diode in the DO-35 (DO-204AH) package. It provides an 8.7 V nominal Zener voltage with a ±5% tolerance, designated by the 'B' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse leakage current of 3 µA at 6.2 V. Electrical characteristics include a Zener impedance of 8 Ω at a test current of 20 mA and a forward voltage of 1.5 V maximum at 200 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Standardized JEDEC registration ensuring broad component selection compatibility
• Capacitance levels optimized for minimal signal interference

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable reference potentials
• Overvoltage protection stages in electronic assemblies
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required electrical tolerances and package style. Confirm RoHS compliance status if applicable, as standard versions may differ from lead-free variants. Ensure the ordering suffix aligns with the desired screening level or packaging format before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a precise 8.7 V reference is needed with tight manufacturing tolerances. The B suffix guarantees a narrower voltage band compared to standard A suffix devices. Consider the thermal resistance and power derating requirements for high-temperature environments to ensure reliable operation within the specified junction limits.

Single Zener Diodes Part Context

This device belongs to the extensive 1N5221 through 1N5281B series of 0.5 W Zener regulators. The series covers a wide voltage spectrum from 2.4 V to 200 V, offering various tolerance options including 5%, 10%, 2%, and 1%. The 1N5238B specifically addresses the mid-range voltage segment with enhanced precision suitable for critical analog applications.

Single Zener Diodes Replacement Considerations

Equivalent parts include the non-suffix 1N5238 and the tighter tolerance 1N5238C. Verify that substitute components meet the same power dissipation and package dimensions to maintain mechanical fit.