You have an Athearn or other similar motherboard that outputs 1.5 volts for those nasty old incandescent bulbs and you want to power LEDs. This will not work. Like Scott says, 3.7 forward voltage. A little less voltage will work. 3 volts is common also.
An alternative is a 21-pin decoder and a Decoder Buddy with resistors onboard to solder prewired LEDs to directly.
I use ELE Doctor on eBay for my prewired and raw LEDs. Search “smd led” and scroll for his ad.
Comments
Nick has them ...
Pre-wired SMD LEDs. I'm not really sure of the voltage, but V=IR is your friend.
I've seen them online as well in bulk, but they aren't pre-wired.
My Articles and Bedside & Hinged Blog
1.5 volt LED?
Isn't the minimum forward voltage for a "white" LED something like 3.7 volts?
(I've had a few beers, not to mention a couple of trucks, since sleeping through that lecture.....)
Scott Chatfield
pre wired
AliExpress is your friend, next to Google...
If you search for "smd led pre wired" you'll find several 100ths, all sizes and colours.
Success!
Willem.
Willem from Rijen, the Netherlands.
Modelling the Wiesentalbahn, Zell im Wiesental, mid-century in N (that is, after we move to the new house).
read my blog
Let me guess.
You have an Athearn or other similar motherboard that outputs 1.5 volts for those nasty old incandescent bulbs and you want to power LEDs. This will not work. Like Scott says, 3.7 forward voltage. A little less voltage will work. 3 volts is common also.
An alternative is a 21-pin decoder and a Decoder Buddy with resistors onboard to solder prewired LEDs to directly.
I use ELE Doctor on eBay for my prewired and raw LEDs. Search “smd led” and scroll for his ad.
Suiyanr has always treated me well.
Nick
https://nixtrainz.com/ Home of the Decoder Buddy
Full disclosure: I am the inventor of the Decoder Buddy and I sell it via the link above.
ebay item 253838108092
I have bought from this vendor before.
Bob M.
Modeling the Western Maryland in the 1980's at http://wmrwy.com