1PMT5939CE3/TR7

Single Zener Diodes Overview

The Microchip Technology 1PMT5939CE3/TR7 is a Zener diode rated at 39 V nominal voltage with a ±5% tolerance. It operates within the Powermite® surface mount package, providing 3.0 W DC power dissipation capability when mounted to TAB 1 at 60°C. The device features a full metallic bottom and integral heat sink locking tabs for efficient thermal management. Electrical characteristics include a test current of 9.6 mA, dynamic impedance of 45 Ω, and reverse leakage current maximum of 1 µA. It supports junction temperatures from -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Surface mount packaging designed for automatic insertion equipment compatibility
• Full metallic bottom construction eliminates solder flux entrapment during assembly
• Integral heat sink locking tabs provide effective thermal dissipation
• ESD rating exceeding 16 kV per human body model

Single Zener Diodes Applications

• Voltage regulation in surface mount circuits
• Power handling applications requiring robust thermal performance
• Automated assembly manufacturing processes

Single Zener Diodes Procurement Notes

Verify the specific suffix 'C' indicates tighter tolerance availability as noted in datasheet documentation. Confirm the 'TR7' designation corresponds to the 7-inch tape and reel packaging containing 3,000 pieces per EIA Standard 481. Ensure procurement specifications align with the required 3.0 W power dissipation capabilities and thermal resistance parameters.

Single Zener Diodes Selection Notes

Select this component for designs requiring high-power surface mount Zener regulation. The Powermite® package offers size advantages over larger through-hole equivalents while maintaining 3.0 W dissipation. Consider the metallic bottom design for applications sensitive to flux entrapment. Verify that the 39 V nominal voltage and 45 Ω dynamic impedance meet circuit requirements.

Single Zener Diodes Part Context

This part belongs to the 1PMT5913B through 1PMT5956B series of 3.0 W Zener diodes manufactured by Microsemi (now Microchip Technology). The series spans voltages from 3.3 V to 200 V. The 1PMT5939 variant specifically provides 39 V regulation. These devices utilize the DO-216 Powermite® package format.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same series include 1PMT5938B and 1PMT5940B for adjacent voltage ratings. Cross-reference other manufacturers offering 3.0 W Powermite® style packages if exact Microchip sourcing is unavailable.