1N5243B

Single Zener Diodes Overview

The onsemi 1N5243B is a single Zener diode in the 1N5221B-1N5252B series, housed in an axial lead DO-204AH (DO-35) glass package. It provides a nominal Zener voltage of 13.0 V with a tolerance range of 12.35 V to 13.65 V at a test current of 9.5 mA. The device supports a maximum power dissipation of 500 mW and features a typical Zener impedance of 13 Ohms. It operates within a junction temperature range of -65°C to +200°C and exhibits a positive voltage temperature coefficient of 0.079 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using planar die construction for consistent performance across operating conditions.
• Features a hermetically sealed glass axial lead package designed for reliable through-hole mounting.
• Utilizes a positive temperature coefficient characteristic suitable for applications requiring predictable thermal behavior.

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify that the ordered part number matches the specific manufacturer designation, as multiple vendors produce this component. Confirm the package type corresponds to the required mechanical footprint, typically DO-35 or DO-204AH. Check for RoHS compliance status if environmental regulations apply to the assembly process. Ensure the supplier documentation aligns with the official datasheet specifications for electrical parameters.

Single Zener Diodes Selection Notes

Select this component when a precise 13 V reference is needed with moderate current handling capabilities. The 500 mW power rating allows for efficient heat dissipation in standard through-hole layouts. Consider the positive temperature coefficient when designing circuits exposed to significant thermal variations. Verify that the 13 Ohm impedance meets the ripple rejection requirements of the target application.

Single Zener Diodes Part Context

This component belongs to the widely used 1N52xxB series of Zener diodes manufactured by onsemi. The series covers a broad voltage range from 2.4 V to 24 V, offering standardized tolerances and packaging. The 1N5243B specifically addresses the 13 V segment, providing a common value for general electronic designs requiring reliable voltage clamping or referencing.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5243B equivalents such as those from Microchip Technology or Central Semiconductor. Verify that substitute parts maintain the same DO-35 axial lead form factor and 500 mW power rating. Ensure the replacement's Zener voltage tolerance and impedance characteristics match the original design constraints.