1N4745-TP

Overview

The MCC 1N4745-TP is a silicon planar Zener diode housed in a hermetically sealed DO-41 glass package. It provides a nominal Zener voltage of 16 V with a maximum power dissipation of 1.0 W at an ambient temperature of 50°C. The device features a reverse leakage current of 5 µA at 12.2 V and a dynamic impedance of 16 Ω at the test current of 15.5 mA. Operating temperatures range from -65°C to +200°C, with a thermal resistance of 100 K/W.

Feature Summary

• Hermetically sealed glass package for environmental stability
• Silicon planar construction for reliable voltage regulation
• High operating temperature capability up to +200°C

Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Procurement Notes

Verify component authenticity by purchasing directly from Micro Commercial Components or authorized distributors to avoid counterfeit parts. Confirm that the specific ordering suffix matches the required packaging format, as variations exist between tape-and-reel, ammo pack, and bulk configurations. Ensure compliance with RoHS standards if applicable to the assembly process.

Selection Notes

Select this component when a 16 V regulation point is required within a through-hole design. The DO-41 package accommodates standard axial mounting techniques. Consider the 16 Ω dynamic impedance for noise-sensitive applications and verify that the 1.0 W power rating aligns with the expected thermal dissipation in the target enclosure environment.

Part Context

This part belongs to the 1N47xx series of 1 Watt Zener diodes manufactured by Micro Commercial Components. The series spans voltages from 3.3 V to 75 V, utilizing a consistent DO-41G glass package across the lineup. The 'TP' suffix indicates a specific manufacturing lot or packaging designation handled by MCC.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4745 specification in a DO-41 package. Verify that substitute components maintain the same 16 V nominal voltage, 1 W power rating, and 16 Ω dynamic impedance to ensure circuit compatibility.