1N5937C

Single Zener Diodes Overview

The Microchip Technology 1N5937C is a glass-encapsulated Zener diode with a nominal voltage of 33 V and a 2% tolerance. It operates in the DO-41 axial package, providing a steady-state power dissipation of 1.25 W at 25°C ambient temperature. The device features a maximum dynamic impedance of 33 Ohms and a reverse leakage current of 800 µA at 25.1 V. It supports an operating junction temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless hard glass construction with tungsten slugs for enhanced reliability.
• Metallurgically enhanced internal contact design ensuring lower thermal resistance.
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.
• Inherently radiation hard as described in Microsemi MicroNote 050.

Single Zener Diodes Applications

• Voltage regulation over broad ranges of operating current and temperature
• High-reliability military screening applications referencing MIL-PRF-19500

Single Zener Diodes Procurement Notes

Verify that the specific part number suffix matches the required tolerance level and screening standard. Confirm RoHS compliance status if environmental regulations apply, as commercial versions may differ from hermetic glass variants. Ensure lead length requirements align with the specified thermal resistance calculations during integration.

Single Zener Diodes Selection Notes

Select this component when a precise 33 V reference with tight 2% tolerance is required in an axial configuration. Consider the 1.25 W steady-state power rating and the wide -65°C to +175°C operating temperature range for harsh environments. Evaluate the low dynamic impedance for stable regulation under varying load conditions.

Single Zener Diodes Part Context

This component belongs to the 1N5913BG–1N5956BG series of 1.5 W glass Zener diodes manufactured by Microchip Technology (formerly Microsemi). The series offers a voltage selection from 3.3 V to 200 V with various tolerance options. The 'C' suffix specifically denotes a 2% voltage tolerance within this standardized JEDEC registered numbering system.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5937C devices or the 1N5937D variant for 1% tolerance requirements. Verify package compatibility and thermal characteristics when substituting.