1N4133/TR

Single Zener Diodes Overview

The Microchip Technology 1N4133/TR is a 500 mW Zener voltage regulator featuring an internal metallurgical bond and hermetically sealed axial-lead glass DO-35 package. It provides a nominal Zener voltage of 87 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65 °C to +175 °C, supports a maximum reverse current of 66.2 µA at the specified voltage, and exhibits a dynamic impedance of 0.01 Ohms. Rated average power dissipation is 0.5 W, with forward voltage reaching 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed construction utilizing an internal metallurgical bond for high reliability.
• Capable of regulating voltage across broad ranges of current and temperature variations.
• Inherently radiation hard design suitable for demanding environments.
• Flexible axial-lead mounting terminals compatible with standard through-hole processes.

Single Zener Diodes Applications

• Voltage regulation in military-grade electronic systems
• High-reliability aerospace circuitry
• Precision reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required qualification level, as commercial versions differ from MIL-PRF-19500/435 qualified parts. Confirm RoHS compliance status if environmental regulations apply, noting that certain finishes are available on commercial grades only. Ensure the tape and reel option aligns with automated assembly requirements by checking for the TR suffix designation.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed, radiation-hardened Zener diode is required for critical applications. The 87 V nominal rating and ±5% tolerance suit precise regulation needs. Consider the axial-lead DO-35 package for traditional PCB layouts. Evaluate thermal derating curves for operation above 25 °C to ensure the 0.5 W power limit is not exceeded under actual operating conditions.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mW metallurgically bonded glass Zener diodes. The series offers voltages from 1.8 to 100 V with various tolerance options. While the base JEDEC numbers are registered, the specific suffixes determine the reliability qualification level and packaging format, distinguishing it from surface mount or tabbed variants.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N4133 variants with matching voltage and tolerance ratings. Verify package compatibility between axial lead and surface mount equivalents like the 1N4133UR-1. Ensure replacement parts meet the same MIL-PRF-19500/435 qualification levels if used in high-reliability contexts.