1PMT4099C/TR7

Single Zener Diodes Overview

The Microchip Technology 1PMT4099C/TR7 is a surface mount low noise 1 watt Zener diode in the Powermite package. It provides a nominal Zener voltage of 6.8 V at a test current of 250 µA, with a maximum impedance of 200 Ohms and reverse current of 10 µA. The device features a full-metallic bottom for heat dissipation and solder flux elimination. It operates within a junction temperature range of -55 to +150 °C and offers a tight ±2% voltage tolerance.

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 suitable for sensitive circuit applications.
• Offers high-density and low-profile mounting capabilities compatible with automatic insertion equipment.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-density and low-profile electronic circuit mounting
• Automatic insertion equipment integration

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR7' indicates tape and reel packaging per EIA-481-B standards. Confirm RoHS compliance status by checking for the 'e3' designation or marking dot, as standard tin-lead versions are not compliant. Ensure procurement matches the C suffix for the required 2% voltage tolerance specification.

Single Zener Diodes Selection Notes

Select this component when a 1-watt power handling capability is required in a surface mount form factor. The 1PMT4099C variant is specifically chosen for its precise 2% Zener voltage tolerance compared to the standard 5% option. Consider the low thermal resistance junction-to-case rating for efficient heat dissipation in compact designs.

Single Zener Diodes Part Context

This part belongs to the Microchip Powermite series of low noise 1 watt Zener diodes. It serves as a surface mount equivalent to JEDEC registered axial-leaded 1N4099 through 1N4135 series devices, but with enhanced power handling and package advantages. The series includes various voltage options from 5.1 to 100V.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1PMT4099 variants such as 1PMT4099Ce3 (RoHS compliant) or non-suffix versions. For axial lead equivalents, consider the 1N4099 series. Verify that any substitute maintains the required 2% tolerance and 1-watt power rating.

Single Zener Diodes FAQ

What does the 'C' suffix indicate in the part number?

The 'C' suffix denotes a tighter Zener voltage tolerance of ±2%, compared to the standard ±5% tolerance found in parts without the suffix.

How is polarity designated on the Powermite package?

Polarity is designated by Tab 1 on the bottom of the package, which identifies the cathode connection.

Is the device sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD per MIL-STD-750 method 1020.