mico LED's

Model Railroader Electronics and DCC
1

Well ive been hunting for some Micro LED’s.

you know the ones that are commonly found on a motherboard, or used in some n-scale police or emergency vehicles…

if im right, they are like 1mm X 1mm? that and a 3mm LED wont work… (also i do alot of work with LEDS so definitely not a novice :wink: )

also if it helps they are flat, and they are surface mount.

if i am confusing you all tell me cause i myself am confused (cause i cant seem to find any!!)

2

Check with one of the electronic suppliers like Mouser. http://www.mouser.com They’ll have more surface mount LEDs than you’ll know what to do with.

–Randy

3

Here are a lot of possiblities. I use SMT LEDs from Litchfield Station.

http://www.google.com/search?hl=en&q=model+railroad+smt+leds&btnG=Search

Rich

4

I bought some on Ebay Look up SMD LED

5

Here is a comparison of a 1.2mm, 1.5 volt lamp with a SMT LED. The lamp voltage is 1.55 volts and 9.4ma. Very little heat. The lamps come from www.led-switch.com.

The LED is a SMT LED from Litchfield Station. 12.4 volts DC, 1 k resistor, 12.24ma.

Rich

6

Try http://www.ngineering.com/. They have some really small led’s.

7

You can also get many flavors of LEDs from Jameco (www.jameco.com) and Digikey (www.digikey.com). 1206 (1.6 x 3.2mm) and 0805 (1.25 x 2.00mm) are some of the smallest. I have to say, I can solder 1206 pretty well, but 0805 are very hard to work with using a normal soldering iron. There are smaller LEDs too - 0603; I can’t imagine trying to hand solder those.

-Tom

8

Litchfield Station and Richmond Controls are two DCC suppliers that I know of who supply SMT LEDs with six inch leads already soldered to the LED. In a previous response in this thread, the lower light is the one with a six inch lead soldered to the LED. The LED is a Golden White 0.06" X 0.03" or 1.5mm X 0.76mm. Dig out your caliper. The resistor in the photo is 1k, the resistor most commomly used for LEDs on DCC decoders.

Link to someones photo of a 603 LED with leads.

http://www.teamsavage.com/ncat/SMT_LED.JPG

Rich

9

Thanks guys ill put your inputs as first proirity the second one…how to solder these bad boys in a set… if you are wondering why,…well have you heard of the Canadian Pacific’s Holiday Express?

well i want to build that in N-scale.

so uh any one want to donate a CP AC4400CW? [swg]

10

A colored assortment like this would probably work well.
http://cgi.ebay.com/1206-SMD-LEDs-red-yellow-white-blue-green-each-20pcs_W0QQitemZ190263888163QQihZ009QQcategoryZ66954QQtcZphotoQQcmdZViewItem

Sorry…No spare AC here…[:P]

11

That’s a lot of leds!