1N4745CE3/TR13

Overview

The Microchip Technology 1N4745CE3/TR13 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 16 V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features RoHS-compliant annealed matte-tin plating on its terminals.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage reference circuits requiring precise regulation
• Power supply protection and overvoltage clamping
• General-purpose voltage regulation in electronic systems

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'e3' indicates RoHS compliance, 'C' denotes the ±2% voltage tolerance, and 'TR13' specifies the tape and reel packaging format. Confirm the manufacturer origin, as this part number may be sourced from Microsemi or Microchip Technology depending on corporate history. Ensure the component meets the specific moisture classification level 1 requirements without dry pack necessity.

Selection Notes

Select this component when a 16 V Zener voltage with high precision (±2%) is required in a 1-watt power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the operating temperature range and the specific test current conditions defined in the datasheet to ensure proper circuit performance under varying load conditions.

Part Context

This device belongs to the popular 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes. The series covers a wide selection of voltages from 3.3 to 100 volts. The 'e3' suffix identifies the device as RoHS compliant, while the 'P' suffix designates the plastic construction which provides improved thermal characteristics over traditional glass-body variants.

Replacement Considerations

Compatible replacements include other 1N4745A variants with matching voltage and tolerance, such as 1N4745A (5% tolerance) or 1N4745G (glass body). Surface mount equivalents like SMAJ4745A are available for different form factors. Verify that any substitute maintains the required ±2% tolerance and 1-watt power rating.