XP-G UTILISATION

[HumanLumen]

Two questions - can anyone help?
1) Can you remove the lowerside power tracks on the XP-G (with a file for example) in order to mount the device with the wire connections being taken to the top of the device, or are the top contacts connected via the bottom tracks?
2) I presume that the focal point is higher up the device than the XR-E - does anyone know the difference in focal height to ascertain the compatibility with XRE reflectors? There will probably be a gap between the LED and refl as the focal point is higher, in which case you will lose some light out of the side of the refl, which may be significant if you look at the wide light dispersion on the datsheet.

Cheers, HL

 

[bshanahan14rulz]

Having worked with an xp-e, I will tell you that the top contacts are usable, if you scrape off part of the silicone layer. This may make it easier for the rest of the silicon (read: lens) to break off, though. You can file off the pads on the underside, but keep in mind, 3.5x3.5mm is very small. I would recommend just getting an mcpcb. Assuming the solder pads are the same, there are many options to choose from.

As for #2, perhaps an xp-e or rebel reflector would work better? I didn't take measurements or look at a datasheet, but looks to me like xp and xr substrate is about the same thickness. xr-e is mounted on top of the diode, though, while xp-e has diode to the side, so xr may be just that much higher up than xp.