1PMT5939C/TR7

Single Zener Diodes Overview

The Microchip Technology 1PMT5939C/TR7 is a surface-mount Zener diode housed in the Powermite DO-216AA package. It provides a nominal Zener voltage of 39 V with a tight ±2% tolerance, indicated by the 'C' suffix. The device operates at a test current of 9.6 mA and features a maximum DC power dissipation of 3.0 W when mounted to Tab 1 at 60°C. It supports an operating temperature range from -55°C to +150°C and includes integral heat sink locking tabs for thermal management.

Single Zener Diodes Feature Summary

• Surface mount packaging designed for automatic insertion equipment
• Integral metallic bottom eliminates solder flux entrapment during assembly
• Unique locking tab acts as an integral heat sink
• ESD rating exceeding 16 kV per human body model

Single Zener Diodes Applications

• Voltage regulation circuits requiring high power density
• Surge protection applications utilizing robust surface mount design
• Power supply reference stages benefiting from low reverse leakage

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level, as the 'C' designation indicates a tighter ±2% Zener voltage tolerance compared to standard variants. Confirm the tape and reel packaging format aligns with automated assembly requirements. Ensure the procurement documentation references the correct manufacturer part number to distinguish between different tolerance grades within the same series.

Single Zener Diodes Selection Notes

Select this component when circuit designs demand a 3-watt power handling capability within a compact surface mount footprint. The tight voltage tolerance makes it suitable for precision regulation tasks where standard tolerances are insufficient. Consider the thermal resistance characteristics and mounting pad dimensions to ensure adequate heat dissipation through the integral locking tab in the final enclosure layout.

Single Zener Diodes Part Context

This device belongs to the 1PMT59xxB series of 3-watt Zener diodes manufactured by Microchip Technology (formerly Microsemi). The series utilizes the proprietary Powermite package to deliver high power capabilities typically found in larger through-hole packages. The 1PMT5939C variant specifically targets applications requiring a 39-volt regulation point with enhanced manufacturing reliability due to its unique package geometry.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts within the 1PMT59xxB series sharing the DO-216AA package and 3-watt rating. Verify that substitute components maintain equivalent thermal resistance and mechanical locking tab specifications to ensure compatibility with existing board layouts and automated insertion processes.