Bonding of an Aluminum Heatsink

Bonding of an Aluminum Heatsink to a Printed Circuit Board (PCB)

A manufacturer of circuit boards in the Midwest required an aluminum heatsink to be bonded to 25 printed circuit boards (PCB). The PCB measured 8.500″ x 6.500″ and was 1/16″ thick. The heatsink which was precision CNC routed and drilled featured a clean anodized finish to prevent corrosion. The heatsink was bonded using Pyralux LG-1000 and positioning on the PCB to a tolerance of ±.005″. Dimensional quality control was carried out for each unit, as well as Hi-Pot testing at 500 volts @ 100 megaohms.

For more information on this PCB heatsink bonding project, see the table below or contact us directly.

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Highlights of this PCB Heatsink Bonding Project

Product Description

This PCB and heatsink is used within the PCB manufacturing Industry

PCB Bonding Capabilities Applied/Processes

CNC Drilling
CNC Routing
Bond the Heatsink to Printed Circuit Board

Bonded using Pyralux LG 1002
Hi-Pot Testing
500 Volts @ 100 Megaohms
Hard Anodizing

Overall Part Dimensions

Aluminum Thickness: .032″
PCB Thickness: 1/16″

Length: 8.500″
Width: 6.500″

Tightest Tolerances


Material Used

Heatsink: Aluminum
DuPont LG-1000

Material Finish

Clean Anodize

Industry for Use

Printed Circuit Board (PCB) Manufacturing


25 units

Delivery Time

3 Weeks

Delivery Location


Standards Met

Customer supplied DXF print
Anodize: MIL-A-8625 Type III Class 1

Project Name

Bonding of Aluminum Heatsink to PCB