1PMT4129/TR7

Single Zener Diodes Overview

The Microchip Technology 1PMT4129/TR7 is a surface mount low noise 1 watt Zener diode in the Powermite package. It provides a nominal Zener voltage of 62V at a test current of 250µA, with a maximum impedance of 500 Ohms and reverse leakage current of 0.01µA. The device features a full-metallic bottom for heat dissipation and solder flux elimination. It operates within a junction temperature range of -55°C to +150°C and offers a steady-state power dissipation of 1.0W.

Single Zener Diodes Feature Summary

• Features a unique locking tab design that serves as an integral heat sink with very low thermal resistance junction-to-case.
• Includes a full-metallic bottom construction that eliminates the possibility of solder flux entrapment during assembly.
• Provides low noise density performance measured over a 1–3 kHz frequency bandpass filter at the specified test current.

Single Zener Diodes Applications

• Voltage regulation circuits requiring high-density mounting
• Low-profile electronic assemblies utilizing automatic insertion equipment
• Applications demanding cooler operation through efficient thermal management

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details and compliance status. Ensure the procurement specifications align with the required tolerance levels and RoHS compliance requirements defined in the manufacturer's datasheet before finalizing orders.

Single Zener Diodes Selection Notes

Select this component when a 62V reference is needed in a surface mount configuration. Consider the 1W power handling capability and the specific thermal characteristics of the Powermite package for designs requiring robust heat dissipation without traditional leaded packages.

Single Zener Diodes Part Context

This part belongs to the Powermite series of low noise 1 watt Zener diodes. It serves as a surface mount equivalent to JEDEC registered axial-leaded series such as 1N4099 through 1N4135, offering enhanced power handling capabilities while maintaining a compact form factor suitable for modern PCB layouts.

Single Zener Diodes Replacement Considerations

Direct replacements include other parts within the 1PMT4099-1PMT4135e3 series or equivalent JEDEC registered 1N4129 devices. Verify that substitute components match the 62V nominal voltage, 1W power rating, and DO-216 package dimensions for mechanical compatibility.