SMAJ4756CE3/TR13

Single Zener Diodes Overview

The SMAJ4756CE3/TR13 is a silicon 2-watt Zener diode in the DO-214AC (SMAJ) surface-mount package. It provides a nominal Zener voltage of 47 V with a tight ±2% tolerance, indicated by the 'C' suffix. The device operates within a junction temperature range of -55°C to +150°C and features a maximum steady-state power dissipation of 2.0 W when mounted on specified copper pads. Electrical characteristics include a test current of 5.5 mA, a maximum dynamic impedance of 80 ohms at the test current, and a maximum reverse leakage current of 5 µA.

Single Zener Diodes Feature Summary

• Surface-mount design optimized for accurate placement on flat handling surfaces
• High surge current rating capability for transient protection applications
• Electrically equivalent to JEDEC registered 1N4756A axial leaded counterpart

Single Zener Diodes Applications

• Voltage regulation in surface-mount circuit designs
• Protection against over-voltage transients in electronic systems
• Reference voltage generation in precision analog circuits

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required voltage tolerance; the 'C' designation confirms a 2% tolerance, whereas other suffixes indicate different tolerances. Confirm the tape and reel packaging format aligns with automated assembly requirements. Ensure the component meets RoHS compliance standards if mandated by the end-product specifications. Cross-reference the datasheet electrical limits with the specific thermal management constraints of the target application board.

Single Zener Diodes Selection Notes

Select this component when a precise 47 V reference or regulation point is required in a compact surface-mount footprint. The 2-watt power rating supports higher energy dissipation compared to standard small-signal diodes. The tight 2% voltage tolerance makes it suitable for applications requiring stable reference voltages without extensive calibration. Consider the thermal resistance and derating curves if operating near the maximum junction temperature limit.

Single Zener Diodes Part Context

This part belongs to the SMAJ4728A through SMAJ4764A series of 2-watt Zener diodes manufactured by Microchip Technology. The series covers a voltage range from 3.3 V to 100 V in the DO-214AC package. These devices are designed as direct replacements for traditional axial leaded Zener diodes, offering improved mounting reliability and space efficiency for modern PCB layouts.

Single Zener Diodes Replacement Considerations

The SMAJ4756CE3/TR13 is electrically equivalent to the JEDEC registered 1N4756A. When substituting, ensure the replacement device maintains the same 2-watt power rating, DO-214AC package dimensions, and 47 V nominal voltage with compatible tolerance.