1N4620-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4620-1/TR is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 3.3 V with a standard tolerance of ±5%. The device operates at a test current of 250 µA, features a maximum dynamic impedance of 1650 Ohms, and maintains a maximum reverse leakage current of 3.5 µA. It supports an operating temperature range from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for high reliability
• Hermetically sealed glass DO-35 axial-lead package
• Qualified per MIL-PRF-19500/435 standards

Single Zener Diodes Applications

• Voltage regulation over broad ranges of current and temperature
• High reliability applications requiring radiation hardness
• Low noise signal processing circuits

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level and RoHS compliance status. Confirm the tape and reel packaging configuration aligns with automated assembly requirements. Ensure the requested quantity meets factory consultation guidelines for bulk orders.

Single Zener Diodes Selection Notes

Select this component when a stable 3.3 V reference is needed within the specified temperature range. Consider the low leakage current and defined impedance for precision regulator designs. Verify that the axial lead form factor fits the target PCB layout constraints.

Single Zener Diodes Part Context

This part belongs to the 1N4614-1 through 1N4627-1 series of 500 mZener voltage regulators. These devices are JEDEC registered and offer extensive voltage selection from 1.8 to 100 volts. They are designed for robust performance in demanding environments.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 1N4620 variants such as 1N4620UR or 1N4620C. Verify compatibility regarding package type, power dissipation ratings, and electrical tolerances before substitution.

Single Zener Diodes FAQ

What is the maximum noise density specification?

The maximum noise density is 1.5 μV/√Hz at the specified test current.

How is polarity indicated on the device?

Polarity is marked by a band on the cathode end, which must be positive relative to the opposite end for Zener regulation.