1PMT5945CE3/TR13

Single Zener Diodes Overview

The Microchip Technology 1PMT5945CE3/TR13 is a surface-mount Zener diode housed in the Powermite DO-216AA package. It provides a nominal Zener voltage of 68 V with a test current of 5.5 mA and a maximum dynamic impedance of 120 Ohms. The device supports a maximum DC power dissipation of 3.0 watts when mounted to Tab 1 at 60°C, with a corresponding maximum Zener current of 36.3 mA. It operates within a junction temperature range of -55°C to +150°C and features a full metallic bottom for thermal management.

Single Zener Diodes Feature Summary

• Integral locking tab acts as an effective heat sink for thermal dissipation
• Full metallic bottom design prevents solder flux entrapment during assembly
• High electrostatic discharge (ESD) protection exceeding 16 kV per human body model

Single Zener Diodes Applications

• Voltage regulation in high-power surface mount circuits
• Clamping applications requiring robust thermal performance
• Protection circuits utilizing automatic insertion equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix 'C' indicates a tighter tolerance variant compared to standard parts. Confirm the 'TR13' designation corresponds to the 13-inch tape and reel packaging containing 12,000 pieces. Ensure compatibility with the specified DO-216AA footprint and mounting pad dimensions before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 3-watt power handling capability is required in a compact surface-mount form factor. The integral heat sink tab makes it suitable for designs where thermal resistance must be minimized without using external heatsinks. Verify that the 68 V breakdown voltage aligns with the target circuit requirements.

Single Zener Diodes Part Context

This part belongs to the 1PMT5913B through 1PMT5956B series of 3-watt Zener diodes manufactured by Microsemi, now part of Microchip Technology. These devices utilize the proprietary Powermite package to deliver high power density in a small outline. The series covers a wide voltage range from 3.3 V to 200 V.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1PMT5945 variants such as 1PMT5945 or 1PMT5945E3, provided the tolerance and packaging match the application needs.