1N4614UR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4614UR/TR is a glass surface mount Zener voltage regulator in the DO-213AA package. It provides a nominal Zener voltage of 1.8 V at a test current of 250 µA, with a maximum impedance of 1200 Ohms and reverse current of 3.5 µA. The device operates within a temperature range of -65°C to +175°C and dissipates up to 0.5 watts. Standard tolerance is ±5%, while tighter tolerances are available via suffixes.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF style package
• Internal metallurgical bond option available by adding a “-1” suffix
• Inherently radiation hard design
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High reliability applications requiring MIL-PRF-19500/435 qualification levels
• Surface mount equivalents for JEDEC registered axial-leaded series

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm exact electrical parameters such as tolerance and termination finish. Confirm that the TR suffix indicates tape and reel packaging per EIA-481-1-A standards. Ensure compatibility with RoHS compliant annealed matte-Tin plating if required by assembly specifications.

Single Zener Diodes Selection Notes

Select this component when a surface mount equivalent to the 1N4614 axial diode is required. Consider the internal metallurgical bond option for enhanced reliability in harsh environments. Evaluate thermal resistance requirements, noting the junction-to-end cap value of 150 ºC/W for proper heat dissipation on FR4 PCBs.

Single Zener Diodes Part Context

This part belongs to the 1N4614UR thru 1N4627UR series of 0.5 watt glass surface mount Zeners. It serves as the SMD counterpart to the JEDEC registered 1N4614 through 1N4627 axial-leaded devices. The series covers voltages from 1.8 to 100 volts with standard 5% tolerances.

Single Zener Diodes Replacement Considerations

Direct surface mount replacements include MLL4614 or MLL4614e3. For axial leaded equivalents, consider the 1N4614 or 1N4614e3 series.