Littelfuse recommends a PCB layout with a thermal pad connected to a large copper area to dissipate heat efficiently. A minimum of 2 oz copper thickness is recommended, and the thermal pad should be connected to a ground plane or a heat sink.
While the CG31.3LTR is primarily designed for low-frequency applications, it can be used in high-frequency applications up to 100 kHz. However, the fuse's impedance and self-resonance frequency should be considered, and additional testing may be required to ensure reliable operation.
The CG31.3LTR is designed to withstand overvoltage conditions, but it's essential to ensure that the fuse is not subjected to voltages exceeding its rated maximum voltage (300V AC/DC). Prolonged exposure to overvoltage can lead to premature aging or failure.
The CG31.3LTR is rated for operation up to 125°C, but its performance may degrade at higher temperatures. If the fuse will be exposed to temperatures above 125°C, derating or additional testing may be necessary to ensure reliable operation.
Littelfuse recommends storing the CG31.3LTR in its original packaging, away from direct sunlight, moisture, and extreme temperatures. Handling should be done with electrostatic discharge (ESD) precautions, and the fuse should not be bent or subjected to mechanical stress.
Trust Checks
This model has been provided by an expert contributor.
Expert Contribution
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
CG31.3LTR Overview
Use the download button to access the CG31.3LTR schematic symbol and PCB footprint.
To find more CAD model downloads similar to this part, try a partial part number search, like CG31.,
or try a keyword search, such as Telecom Protection Circuits
