5mm LEDs ok substitute for 3mm in a pinch?

Darn, in the middle of converting an S3 and ran out of 3mm LEDs. I see I can fit a 5mm into one of the ends.

This may be a silly question, but would there be a problem? Would this 20mA 5mm clear LED in my hand run as cool and fine as my last 3mm in the other end of the loco? The 5mm is about the same physical size as the present bulb so fit will not be an issue.

Thanks

Cisco,

As long as you can center it in the front headlight lens and it won’t be protruding through the shell, it should be fine. The size of an LED shouldn’t make any difference in regards to temperature.

Tom

Cisco Kid

I have used all different sizes of LEDs in similar installations without any problems.

Dave

LED temperatures will never be an issue, regardless or size or type. LEDs just don’t get more than luke warm if that much.

As long as it physically fits and it the same color as the 3mm one in the other end. Otherwise, physical size is the only difference.

–Randy