1N5237BTR

Single Zener Diodes Overview

The onsemi 1N5237BTR is a single Zener diode with an 8.2 V nominal voltage and ±5% tolerance, housed in a DO-35 axial lead package. It dissipates up to 500 mW at 25°C, derating by 4.0 mW/°C above this temperature. The device operates within a junction temperature range of −65°C to +200°C and features a maximum reverse leakage current of 3 µA at 6.5 V. Electrical characteristics include a dynamic impedance of 8 Ω at a test current of 20 mA and a positive voltage temperature coefficient of 0.062 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through avalanche breakdown characteristics in the reverse bias region.
• Features a hermetically sealed glass axial lead package designed for high thermal stability and reliable operation across extreme temperatures.
• Offers precise voltage tolerance and low dynamic impedance for accurate reference applications.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• Clipping and clamping waveforms in signal processing

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to tape and reel packaging containing 5000 units per reel. Confirm compliance with RoHS and halogen-free requirements as specified in the datasheet. Ensure the procurement documentation matches the exact part number to avoid confusion with bulk bag variants lacking the trailing characters.

Single Zener Diodes Selection Notes

Select this component when an 8.2 V reference point is required with tight tolerance limits. The DO-35 package supports through-hole mounting, making it suitable for standard PCB layouts. Evaluate the power dissipation capabilities against the expected operating temperature to ensure the junction temperature remains within the specified maximum limit during continuous operation.

Single Zener Diodes Part Context

This device belongs to the 1N5221B through 1N5252B series of Zener diodes manufactured by onsemi. The series utilizes a standardized glass axial lead construction (CASE 017AG) to provide consistent electrical performance across various voltage ratings. The 1N5237B variant specifically targets applications needing an 8.2 V breakdown voltage with defined impedance characteristics.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other 1N52xxBZ models from onsemi. Cross-manufacturer equivalents must match the 8.2 V nominal voltage, 500 mW power rating, and DO-35 package dimensions to ensure mechanical and electrical compatibility without circuit redesign.