1EZ18D5-TP

Overview

The 1EZ18D5-TP is a single Zener diode manufactured by Micro Commercial Components (MCC). It features a nominal Zener voltage of 18 V with a tolerance of ±5%. The device has a maximum power dissipation of 3 W and operates within a temperature range of -55°C to +150°C. It utilizes a DO-15 axial through-hole package. Key electrical characteristics include a maximum reverse leakage current of 500 nA at 13.7 V, a forward voltage of 1.2 V at 200 mA, and a maximum Zener impedance of 6 Ohms.

Feature Summary

• Provides stable voltage regulation via Zener breakdown mechanism in the reverse bias region.
• Capable of dissipating up to 3 W of power for robust performance in high-power applications.
• Features low reverse leakage current to minimize standby power consumption.
• Designed for reliable operation across an extended industrial temperature range.

Applications

• Voltage reference circuits requiring precise 18 V levels.
• Overvoltage protection stages in power supply inputs.
• Clamping circuits to limit signal amplitude peaks.
• Biasing networks for transistor amplifiers.

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches DO-15 axial leaded format. Ensure operating conditions remain within specified thermal and electrical limits. Cross-reference part numbers with authorized distributors to avoid counterfeit sources. Validate RoHS compliance status if required by project regulations.

Selection Notes

Select this component when a 3 W power rating is necessary for voltage regulation tasks. The DO-15 package suits designs requiring through-hole mounting for mechanical stability. Consider the 6 Ohm impedance value for dynamic load requirements. Evaluate thermal management needs given the 3 W dissipation capability. Compare against lower power variants if space constraints allow reduced wattage.

Part Context

This part belongs to the 1EZ series of Zener diodes from MCC, designed for general-purpose voltage regulation. The series offers various voltage options within a standardized axial package family. These components are commonly used in consumer electronics and industrial control systems where reliable voltage clamping is essential. The 1EZ18D5-TP specifically addresses applications needing higher power handling than standard small-signal diodes.

Replacement Considerations

Public confirmed substitute part numbers: None identified in available documentation.