Silverlite 4in Printed Circuit Board with 5.39in Overall Dimension

Frank Giurleo: Bought for bathroom lighting
Did the trick!
Nothing to dislike.

United States on Sep 20, 2023

C. SianoC. Siano: I've used these Light Engines now for 3 different projects. All were converting a more conventional bulb in a fixture to LED. One was very simple, one only required a minor modification, and one should only be attempted by someone that understands PCB electronics.

Lets start with the more challenging one. The first photo is the ceiling fan in my son's bedroom. Originally, the very center had a 20 watt halogen bulb. On a desk, that's fine, but in a ceiling fixture, it was hardly more light than a nightlight. In this application, I put in one of the 4". In retrospect, I probably should have used the 3", but I really wanted a dramatic increase in light. The problem was that the 4" did not really fit. Not only did I have to remove the metal backing plate, but I also needed to cut into the PCB board and the plastic cover in several places to fit past parts of the fixture. I was able to line up the PCB and find areas that could be cut, but this is where you really do need to know and be able to test before you modify. I don't recommend this modification to most people. But, as you can see, the amount of light is now sufficient for the bedroom.

The next step up was to use...

United States on Jan 16, 2021

Darron R. BirgenheierDarron R. Birgenheier: I paid $13.99 on 12/21/2016 for the 4” 17W 3000K (warm color temp) model. I see from the options printed on the PCB that a wide range of other temps were at least planned, if not ever manufactured in quantity. I’d love to be able to buy this in 5000K, my favorite daylight color temperature.

I’m very impressed with this “light engine”. It’s an ideal upgrade for any ceiling fixture that you have that you like enough to keep, but would like to bring into the LED era.

This is an instant-on design. There is virtually no delay between switching it on and full light output. I’d imagine that inrush current is substantial, but I don’t own any proper tools to measure inrush (yet!).

Build quality is simply excellent. Taking a close look at the circuit board, it’s one of the best I’ve seen in an LED light. Everything is clean, the surface-mount components are all very well aligned with their PCB pads, and the large capacitors are 105C rated. There is essentially NO flicker, verified with my “patented” Sony 59.94FPS rolling-shutter method. I did not test the dimming capabilities, so can’t vouch for the amount (if any) of flicker at lower input...

United States on Dec 28, 2016