Part#: 345-1874-ND DUALLED-5850 Heatsink Drill Hole Request?

Electromechanical Optoelectronics
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1

I’m interested in purchasing said part number above for a COB LED. The heat sink’s drill holes are spaced 27 x 30 mm. The COB module itself is 35 x 35 x 2 mm. It is a UVA 365 nm 150 W COB LED (97~W thermal waste). I am only interested in purchasing it if it can come with drill holes not just for the fan but also to attach the COB LED. Otherwise I am forced for a permanent solution involving JBWeld and that’s not ideal for a prototype.

Please let me know if the product can be shipped with drill holes for the COB LED.

2

Hi maksym,

Welcome to the DigiKey TechForum.

I don’t see that any version of this heatsink actually comes with 27mm x 30mm drill holes.
The closes drill holes offered for a heatsink in this series is 32mm x 32mm as page 3 on data sheet shows. I don’t see that there are any customizable drill hole patterns that can be ordered for these or the data sheet does not seem to offer that.

3

LED mounting patterns are highly variable, making it impractical to offer devices of this type pre-drilled/tapped for such as a standard option.

While custom modifications to add such are often available as a value-add service, setup fees and MOQs generally apply.

Simply drilling and tapping the desired holes oneself would be another option.

4

With local milling costs ranging anywhere from $4-$8 per hole I’d be more interested in sourcing a used model from various second hand market places.