1N4757CE3/TR13

Overview

The Microchip Technology 1N4757CE3/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 51 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 compliance via the 'e3' suffix. Packaged in tape and reel format per EIA-296 standards as denoted by the 'TR' suffix, it offers flexible mounting terminals and void-free transfer molded epoxy construction.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole applications
• 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 regulation circuits requiring precise tolerance
• Power supply reference voltage generation
• Overvoltage protection in electronic systems

Procurement Notes

Verify that the ordering suffixes align with specific requirements: 'C' denotes a 2% voltage tolerance, 'e3' confirms RoHS compliance, and 'TR' indicates tape and reel packaging. Confirm the manufacturer origin, as this part originates from the Microsemi Scottsdale Division now under Microchip Technology. Ensure the application environment respects the specified thermal resistance and power derating curves for reliable operation.

Selection Notes

Select this component when a 51 V Zener voltage with high precision (±2%) is required in an axial-lead package. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the maximum dynamic impedance and reverse current specifications for circuit stability. Verify that the 1.0-watt power dissipation rating suits the thermal management capabilities of the target PCB layout.

Part Context

This device belongs to the widely used 1N4728A through 1N4764A series of 1.0-watt Zener diodes registered with JEDEC. The series covers a voltage selection from 3.3 to 100 volts. The 'P' suffix designates the plastic encapsulation, while the 'e3' suffix identifies RoHS-compliant devices with annealed matte-tin plating. Surface mount equivalents are available in SMAJ and MLL packages.

Replacement Considerations

Surface mount equivalents include SMAJ4757A and MLL4757A. Glass-body versions exist with a 'G' suffix but require separate datasheet verification. Military screening levels are available with prefixes such as MQ, MX, MV, or MSP.