Firstly these arrived promptly and from a UK warehouse, no wait for delivery from China.
Measured voltage drop of 3.23V for an I(f) of 20mA. They appear to deliver a little less than the claimed output I measured 13.8cd as opposed to the 15cd claimed, but that's just splitting hairs and is within the expected variation. The LED's give a tight beam, and can be used as is as a crude flashlight.
At standard drive currents they run cool with little variation in colour between them. You can overdrive them - I had one running for a day at 30mA on a 5% duty cycle (50ms on time) with out apparent problems. Not sure if they would tolerate that much drive without cooling somehow but it was very bright.
Beyond that, little to say - they do exactly what was said and a price far cheaper than other suppliers. I will certainly be buying more of these to build tent lighting systems for the summer.
| Manufacturer | Liroyal |
|---|---|
| Part Number | 003722 |
| Package Dimensions | 9.4 x 8 x 1.2 cm; 80 g |
| Item model number | tinxs-leds-1 |
| Size | 5mm |
| Colour | White |
| Voltage | 3.5 Volts |
| Wattage | 1 watts |
| Item Package Quantity | 1 |
| Type of Bulb | LED |
| Item Weight | 80 g |
