1N4729A TR

Overview

The Central Semiconductor Corp 1N4729A TR is a silicon Zener diode with a nominal voltage of 3.6 V and a maximum power dissipation of 1.0 W at 50°C ambient temperature. It features a 5% tolerance, a test current of 69 mA, and a maximum Zener impedance of 10 Ω at the test current. The device operates within a junction and storage temperature range of -65°C to +200°C.

Feature Summary

• Designed for reliable voltage regulation in industrial, commercial, entertainment, and computer applications
• Utilizes a DO-41 glass axial leaded package for through-hole mounting
• Features metallurgical bonding for enhanced structural integrity

Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit protection
• Entertainment system power management
• Computer hardware voltage stabilization

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the presence of the 'TR' suffix indicates tape and reel packaging. Ensure compliance with RoHS or Tin/Lead plating requirements based on specific ordering suffixes. Validate that the part number matches the discontinued status notice if sourcing from secondary markets.

Selection Notes

Select this component when a precise 3.6 V reference is required for low-voltage circuits. Consider the 10 Ω impedance for stability under varying load conditions. Evaluate the high operating temperature limit for environments exceeding standard ratings. Verify compatibility with existing DO-41 footprint constraints during PCB layout.

Part Context

This component belongs to the 1N4728A series, which covers voltages from 3.3 V to 100 V. All devices in this series share identical mechanical outlines and maximum rating profiles, differing primarily in their specific Zener voltage breakdown points and associated test currents defined in the electrical characteristics table.

Replacement Considerations

Central Semiconductor has classified the 1N4729A as End of Life (EOL). No direct replacement part numbers are provided by the manufacturer. Designers must source remaining stock or identify alternate suppliers for equivalent specifications.