1PMT5951A/TR7

Single Zener Diodes Overview

The Microchip Technology 1PMT5951A/TR7 is a Zener diode housed in the Powermite surface mount package. It provides a nominal Zener voltage of 120V with a test current of 3.1mA and a maximum dynamic impedance of 380 Ohms. The device supports a maximum DC power dissipation of 3.0 watts when utilizing TAB 1, with a reverse leakage current of 1µA at 91.2V. It operates within a junction temperature range of -55°C to +150°C and features a forward voltage of 1.2V at 200mA.

Single Zener Diodes Feature Summary

• Surface mount packaging designed for automatic insertion equipment
• Integral heat sink locking tabs for thermal management
• Full metallic bottom eliminates solder flux entrapment during assembly

Single Zener Diodes Applications

• Voltage regulation circuits requiring high power handling
• Surge protection applications
• Reference voltage generation in power supplies

Single Zener Diodes Procurement Notes

Verify the specific suffix against official documentation to confirm tolerance and marking variations. Confirm that the TR7 designation corresponds to the correct tape and reel packaging format specified by the manufacturer. Ensure compatibility with automated placement equipment due to the unique mechanical design of the Powermite package.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution is required for high-power Zener regulation up to 3.0 watts. Consider the DO-216AA footprint and the necessity for a mounting pad connected to TAB 1 for optimal thermal performance. Evaluate the 120V breakdown requirement against available standard voltages in the series.

Single Zener Diodes Part Context

This part belongs to the 1PMT59xx series of Zener diodes manufactured by Microchip Technology (formerly Microsemi). The series utilizes the proprietary Powermite package to deliver 3-watt power handling capabilities in a compact surface mount form factor. These devices are engineered for robustness in industrial and commercial electronic applications.

Single Zener Diodes Replacement Considerations

Direct substitutes include other parts from the 1PMT59xx series such as the 1PMT5950B or 1PMT5952B if voltage adjustments are acceptable. Verify pinout compatibility and thermal resistance specifications before substituting with generic DO-216 equivalents.