SMAJ4756E3/TR13

Single Zener Diodes Overview

The SMAJ4756E3/TR13 is a silicon 2-watt Zener diode in the DO-214AC (SMAJ) surface-mount package. It features a nominal Zener voltage of 47 V with a 5% tolerance, tested at 5.5 mA. Key electrical parameters include a maximum dynamic impedance of 80 ohms and a reverse leakage current of 5 µA at 35.8 V. The device supports a peak surge current of 95 mA and operates within a junction temperature range of -55°C to +150°C.

Single Zener Diodes Feature Summary

• Designed for surface mount applications with a flat handling surface for accurate placement
• Electrically equivalent to JEDEC registered 1N4728A through 1N4764A series
• Features high surge current rating capability
• Terminals are solderable per MIL-STD-750, Method 2026

Single Zener Diodes Applications

• Voltage regulation circuits
• Surge protection applications
• General purpose rectification

Single Zener Diodes Procurement Notes

Verify the specific part number against official Microchip Technology documentation to confirm the 5% tolerance designation associated with the base model. Ensure the TR13 suffix corresponds to tape and reel packaging requirements for your assembly line. Cross-reference the datasheet revision date to validate thermal derating curves and maximum ratings before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component for designs requiring a 47 V reference or clamp in a compact SMAJ footprint. Consider the 80 ohm dynamic impedance for regulation precision needs. Verify that the 2 W power dissipation rating aligns with the thermal management strategy, noting the linear derating above 100°C lead temperature. Confirm compatibility with standard SMT reflow profiles up to 260°C.

Single Zener Diodes Part Context

This component belongs to the SMAJ4728A through SMAJ4764A family of 2-watt Zener diodes manufactured by Microchip Technology. These devices utilize silicon planar technology and are housed in the DO-214AC package. The series provides a wide voltage range from 3.3 V to 100 V, offering electrically equivalent performance to traditional through-hole 1N47xx series diodes in a surface-mount format.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' SMAJ4756 variants meeting DO-214AC dimensions and 47 V/2 W specifications. Verify pinout polarity and thermal resistance characteristics match the original design constraints.