Extruded Aluminium Heatsinks PBX

Product catalog summary

Thermal Resistance Data Overview

This document provides thermal resistance data for a heatsink system under natural air conditions. The material used is PBX extrusion as per drawing 39-1512, with specified lengths.

Specifications

Material: PBX extrusion
Weight: 29.0 Kg/m
Cross-Sectional Area (C.S.A): 11007 mm²
Cooling Configuration: Data provided is for double side cooling (two heatsinks). For single side cooling, the thermal resistance should be multiplied by a factor of 2.

Thermal Resistance Data

Conditions: Air natural
Thermal Resistance (Rth S-A): Measured in °K/W, varies with power (watts) and length of the heatsink (250 mm, 300 mm, 500 mm).

Graphical Data Summary

The thermal resistance decreases as the power increases, with specific values provided for different heatsink lengths.
For a 500 mm long section, the thermal resistance is plotted against time (seconds) and power (watts), showing a decrease in resistance with increased power.

Key Notes

Ensure to adjust the thermal resistance values for single side cooling by doubling the provided data.

Catalog excerpts

THERMAL RESISTANCE DATA. (SINK TO AMBIENT) PBX EXTRUSION TO DWG. 39-1512 (LENGTHS AS INDICATED) DATA GIVEN IS FOR DOUBLE SIDE COOLING (i.e. 2 HEATSINKS) FOR SINGLE SIDE COOLING FACTOR x 2 POWER (WATTS) PBX-ADATA 2003

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Extruded Aluminium Heatsinks PBX

Extruded Aluminium Heatsinks PBX

Catalog excerpts

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