1PMT5942C/TR13

Single Zener Diodes Overview

The Microchip Technology 1PMT5942C/TR13 is a surface-mount Zener diode housed in the Powermite DO-216AA package. It provides a nominal Zener voltage of 51 V with a tight ±2% tolerance, indicated by the 'C' suffix. The device supports a maximum DC power dissipation of 3.0 W when mounted to Tab 1 at 60°C. Electrical characteristics include a test current of 7.3 mA, a dynamic impedance of 70 Ohms, and a maximum reverse leakage current of 1 µA at 38.8 V.

Single Zener Diodes Feature Summary

• Surface mount packaging designed for automatic insertion equipment
• Full metallic bottom eliminates solder flux entrapment during assembly
• Integral locking tab acts as an effective heat sink
• High electrostatic discharge (ESD) rating exceeding 16 kV per human body model

Single Zener Diodes Applications

• Voltage regulation in high-power surface mount circuits
• Protection against overvoltage transients
• Reference voltage sources requiring tight tolerance stability

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix to confirm the voltage tolerance level, as the 'C' designation indicates a tighter ±2% tolerance compared to standard versions. Confirm that the tape and reel packaging matches the required EIA Standard 481 dimensions for your automated assembly line. Ensure thermal management strategies account for the 30°C/W junction-to-tab thermal resistance to maintain safe operating temperatures under full load conditions.

Single Zener Diodes Selection Notes

Select this component when a 51 V reference is required in a compact surface mount footprint capable of handling 3 watts of power. The tight ±2% tolerance makes it suitable for precision applications where standard commercial tolerances are insufficient. Consider the unique mechanical features, such as the locking tab, if board space constraints or thermal conductivity requirements dictate a specialized mounting solution.

Single Zener Diodes Part Context

This part belongs to the 1PMT5913B through 1PMT5956B series of 3-watt glass Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series covers a wide voltage range from 3.3 V to 200 V. The 1PMT5942 variant specifically targets the 51 V segment, offering robust performance in the Powermite package which bridges the gap between low-power SMD devices and larger axial-leaded components.

Single Zener Diodes Replacement Considerations

Direct replacements within the same family include the 1PMT5942B (±5% tolerance) or 1PMT5942D (±1% tolerance). Verify that any substitute maintains the DO-216AA footprint and 3.0 W power dissipation capability.