The LED works as expected. The only reason that I lowered the rating on durability is the feed wires are very thin and delicate, because it needs to be fed through the signal mast. I had issues with installing the mast so I broke the wires, and needed a replacement. I highly recommend this product.

Showcase Miniatures produce many excellent products from their “Century Foundary” including their 3-color Searchlight Signals. Central to these excellent kits are the 606 (0.060” x 0.060”) 3-color LEDs that they provide through a special arrangement with Richmond Controls (Richmond, TX). As far as I can tell these are the smallest 3-color LEDs to be found. They are not very expensive for these fine LEDs (about $10.00 each in 2022). The signal heads are just barely large enough to accept the LED package if one is very careful to align them as shown in the instructions. Believe me, they do not fit in the signal head in any other orientation (I have failed that test a time or two).
The LEDs are supplied with a copious length of attachment wire, around 14 inches. The wire is 40 gauge, which is small enough to easily fit down the 1/32 inch central tube. Again, careful attention to the instructions is essential. The original signal heads, diecast pewter I think, sometimes present a substantial challenge to prevent shorting out one or more of the LEDs. Recently, Showcase have changed to nonconducting polymer signal heads, which eliminates that problem. Yay for that, and thank you.
Handle the LEDs with the greatest of caution and gentility. If one or more of the signal wires is dislodged it causes extreme problems. The 40 gauge wire is fragile and easily dislodged. You can attempt a repair, of course; but, unless you happen to have a dissecting microscope it is a matter of the greatest care and ample good luck. I have found it essential to attach the wires to an external array of solid copper wire posts so that each time a step is made a functional check can be made. It is only necessary to keep them connected until they are to be inserted in the signal shaft. Due to my own native clumsiness, I am never able to breathe easily until the back cover is glued onto the signal head. I always use RC-56 (i.e. Canopy Glue) for the signal heads in case they need to be repaired or the LEDs replaced.
The signal kits as supplied are exceptionally elegant and prototypically dimensioned with great care. They look like a million bucks when finished. As supplied the signals are very well suited to stationary placement on a fixed layout for a base.
For use on NTrak modules, however, the situation can be quite different. My modules are designed to be reduced to simple flat planes for transport. Consequently, I have to remove the signals between setups and for track cleaning. I mount them on 8-pin DIP headers plugged into sockets on the underside of the modules. The original 1/32 inch shaft is a bit too fragile to be used for repetitive plugging and unplugging. I replace the 1/32 inch shaft with a 3/64 inch brass tube (K & S Metals). Likewise, the elegant stainless steel ladder is replaced with a brass one rescued from a Gold Medal Models “Safety Ladder Kit” (Cat. No. 160-38). These are oversized for the signal, but they are brass and can be soldered to. I use 0.012” brass wire for the ladder braces and solder them to a ½ inch brass plate (1/16 thick) for a base using a small piece of brass angle. The result is robust enough to survive many insertions and removals. Connecting the signal head to the shaft also requires some attention in my experience. The bracket arms supplied in the kit depend entirely on the integrity of the ACC joint between the two on semi-spherical ball. This is OK for a static display, but not strong enough for module use, in my opinion. Consequently, because of a paroxsism of enthusiasm back the 1990s I have a large number of leftover Sunrise Enterprises solid head signals (not designed for LEDs). These bracket arms are larger in diameter than the showcase arms and in addition have a 0.020” “pip” on the end that can be inserted into a like hole drilled into the bottom of the signal head before mounting the LED. Alternately, a small length of 0.020” brass wire can be inserted through two such holes from the signal head and into the mounting arm. This requires some care, in my limited experience.
Well, good luck, of course. Happy signaling.

great tri-color led - looks good BUT it will not fit into the 514 signal head facing the front of the head to get the most light output - have had to change my signal plans from three colors to two which is disappointing but for the station exit signals is acceptable - have to go to "0603" size red/green led to fit into the 514 signal head
SHOWCASE REPLIES: The Tri-Color 606 size LED was never intended to fit into the N scale signal head facing front. Clearly, the instructions have it going in sideways. With no compromise to scale, the light output is exceptional and depends on what resisters you use in the line. We find that this LED is the best on the market and works just as it is intended with very bright full light. See a few of the photos for this listing showing an N scale signal head with LED installed as instructed and working as intended.

Nice LED for HO scale signal heads. When I received mine, there was an issue with the instructions that I discussed with the Mfgr. and the instructions were rewritten to make then absolutely clear. With the changes in instructions. the LED works like a charm and has good colors for signals...

Color appropriate and intensely bright.  Should work for your application.

If you're looking for an outstanding tri-color SMD LED or otherwise, check out the Tri-Color LED (606 size), available from Showcase Miniatures, it is fantastic.

This a great LED. With the continuing advancement of technology, these LEDs are a blessing to the model railroading hobby. It is amazing how this small package contains 3 colors.

Unbelievable how small this product is. To be able to mount the wires on the pc board is incredible! And it works! Leds are bright. Only thing I had issues with was dealing with how small the gage of the wires. Seemed impossible to solder to anything, even to themselves. Other than that, a very good product.

The detail, and scale dimensions are excellent, however, the resistor value on the 3 way light is WAY to high. I had to reduce it to 1k for the green light to work. Once reduced the block signal was accurate and worked perfectly. This is in reference to using the two light system.