1N5237B-TAP

Single Zener Diodes Overview

The Vishay 1N5237B-TAP is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial leaded package. It provides an 8.2 V nominal Zener voltage with a ±5% tolerance, tested at 20 mA. The device dissipates up to 500 mW and operates within a junction temperature range of -65 °C to +175 °C. Key electrical characteristics include a maximum reverse leakage current of 3 µA at 6.5 V, a typical dynamic resistance of 8 Ω at 20 mA, and a positive temperature coefficient of 0.062 %/K.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features a glass-sealed DO-35 axial package suitable for through-hole mounting
• Provides high-temperature soldering capability at 260 °C peak

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the TAP suffix to confirm the specific ammopack packaging format containing 10,000 units per reel. Ensure compliance with RoHS standards and material categorization requirements as defined by Vishay. Confirm that the application environment remains within the specified thermal equilibrium conditions and does not exceed the absolute maximum ratings for power dissipation or junction temperature.

Single Zener Diodes Selection Notes

Select this component when a standard 8.2 V reference with ±5% tolerance is required in a through-hole configuration. The positive temperature coefficient makes it suitable for applications where voltage increases with temperature. Verify that the test current of 20 mA aligns with the circuit design constraints and that the 500 mW power rating accommodates the expected operating conditions without excessive derating.

Single Zener Diodes Part Context

This part belongs to the 1N5221 to 1N5267 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 2.4 V to 75 V. The 'B' suffix indicates the standard ±5% voltage tolerance, while the 'TAP' suffix denotes the specific bulk tape packaging format used for automated assembly processes.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering the 1N5237B specification in the DO-35 package. Verify that any substitute matches the 8.2 V nominal voltage, 500 mW power dissipation, and ±5% tolerance. Ensure the replacement maintains similar dynamic resistance and leakage current characteristics for equivalent performance.