---
title: Thermal Performance
slug: microflux-4lpi/thermal-performance
icon: {"faIcon":"fa-solid fa-spinner"}
docTags: 
createdAt: 2025-05-27T04:21:03.004Z
---

The thermal dissipation of the micro**FLUX** is highly dependent on a number of factors including input voltage, output voltage, output current and ambient temperature. It is recommended to test micro**FLUX** in your configuration and observe internal temperatures during operation or via extracting the logs using the Hargrave Configurator.

The thermal dissipation required per channel can be estimated using the Thermal Loss charts in the Thermal Loss section.

:::CtaButton{label="Thermal Loss" docId="3vksDoL33WnA4iHKxt5bC" openInNewTab="true"}

:::



Typical performance characteristics measured at 25°C ambient temperature unless otherwise stated.

## <font color="#0C121D">Output Current Rating </font>

- <font color="#0C121D">HV Channel: 5 A / Channel </font>
- <font color="#0C121D">LV Channel: 7 A / C</font>hannel

Channel derating may be required to prevent overheating depending on environmental conditions, unit configuration, and input voltage. Perpendicular airflow over the unit using the available integration heatsink of 6 m/s (15 m/s without any heatsink) is sufficient to allow any configuration and any input voltage with a temperature rise of 50°C or less. Use the below graph to find an estimate of the airflow needed for your total current draw (sum of the current draw from all 4 outputs).

![](https://api.archbee.com/api/optimize/MIXUvgEo5LjmssoyMwenk/CNi8lWh2mxNZDvMFvrMUq-20260514-004045.png "Measured at worst case operating points and airflow perpendicular to the device, allowing for a 50°C temperature rise.")



For more detailed optimization of the micro**FLUX** 4LPi into your craft, use the Channels loss graphs available in Thermal Loss to find the loss for each output channels at its output voltage and current draw. Then use the sum of the losses for each of the 4 channels and the graph below to find the perpendicular airflow needed to cool your unit.



![](https://api.archbee.com/api/optimize/MIXUvgEo5LjmssoyMwenk/MlvQOi_VGbKKaU0jISbgb-20260514-004103.png "Measured with airflow perpendicular to the device, allowing for a 50°C temperature rise. ")



Please contact Hargrave if you need efficiency or loss information for configurations outside of those provided.