This page is outdated and no longer updated as of April, 2008
Fenix Flashight, LTD employes various brands and models of LED in the flashlights that they produce. From the popular Nichia 5mm LEDs in the E0 to the latest Cree X-Lamp and Philips Lumileds Luxeon Rebel LEDs, Fenix uses the LED best suited for each flashlight. There is quite a bit of overlap between some of these LEDs, so Fenix has chosen to offer some of their models with different LED choices so that the consumer can chose the LED that they prefer.
The two high-output LEDs currently in use by Fenix are the Cree XLamp® XR-E LED and the Philips Lumileds Luxeon Rebel LED. Cree and Philips Lumileds are both US-Based companies that are focused on researching and producing high-output LED lighting solutions. Each company produces a wide range of LEDs, some of which are designed for use in portable lighting solutions, like flashlights.
LED production is a very exact process, but extremely minor variations in the process affect the characteristics of different batches of LEDs. These variations lead to slightly different specifications for each batch of LEDs. These variations are well-understood in the industry, and are accounted for by testing a certain number of LEDs from each batch, and based on that testing, assigning various "Bin codes" to each batch of LEDs. Based on the various Bin codes assigned to each batch of LEDs, the LED buyer can anticipate, among other things, any color variations present in the batch of LEDs, and will know the approximate output per milliamp (mA) of each batch of LEDs.
Major flashlight manufacturers typically buy thousands of LEDs at a time, and there are generally some Bin number variations in the LEDs purchased. Major flashlight manufacturers will generally only buy Bin numbers that produce a bright white output, ensuring very little color variation in the flashlights that they sell. Depending on the time of purchase, there are typically only a few output Bin codes available, and the higher the Bin code, the more expensive the LED. For this reason, Fenix purchases "normal" output LEDs and installs those LEDs in the normal flashlights that they sell, and also purchases more expensive Premium Output LEDs, and installs those in the Premium Flashlights that they sell.
The Cree XLamp® XR-E LED is produced in different "Bin" numbers, which give the minimum Luminous Flux (in lumens) when driven at 350mA. The output from various bin numbers at 350mA is shown below. This LED has a maximum drive current of 1,000 mA. Fenix, like most other flashlight manufacturers, achieves higher output from the LEDs by driving them with a higher current. These "Bin" numbers are all currently in production by Cree:
P4 - 80.6 lumens
Q2 - 87.4 lumens
Q3 - 93.9 lumens
Q4 - 100 lumens
Q5 - 107 lumens
This information is taken from this pdf: http://www.cree.com/products/pdf/XLamp7090XR-E_B&L.pdf
The Philips Lumileds Luxeon Rebel LED is produced in different Bin numbers, which give a range Luminous Flux (in lumens) when driven at 350mA. The output in lumens from various bin numbers at 350mA is shown below. This LED has a maximum drive current of 1,000 mA. Fenix, like most other flashlight manufacturers, achieves higher output from the LEDs by driving them with a higher current. These Bin numbers are pre-determined and somtimes theoretical, they are not all currently in production:
L - 80 min / 90 max
M - 90 min / 100 max
N - 100 min / 120 max
P - 120 min / 140 max
Q - 140 min / 160 max
This information is taken from this pdf: http://lumileds.com/pdfs/DS56.pdf
The Fenix flashlights shown in the table below employ the Cree XLamp XR-E LED (P4 Bin), the Cree XLamp XR-E Q5 Bin LED, the Philips Lumileds Luxeon Rebel LED (L or M Bin), and the Philips Lumileds Luxeon Rebel 100 LED (N Bin)
- Specifications including output are from the manufacturer
- The single levels lights provide a brighter beam while the battery is fresh, and a very low output when the battery is mostly depleted. The dual level lights also have a much lower level output when the battery is mostly depleted, but this is not reflected in the chart.
- The two levels on the L1S, L1T, L2Pv2, L2S and L2T are controlled by twisting the head of the flashlight. On and off is controlled by the tailcap switch.
- The L0D and P1D digital models are controlled by turning the power on and off rapidly to change modes. The modes are in this order: Primary - Low - Max - Strobe - SOS
- The L1D, L2D, P2D and P3D digital flashlights have two modes of Texturederation turbo and normal, controlled by twisting the head, and different levels in each mode controlled by turning the power on and off rapidly. With the head tightened all of the way down the flashlight produces max output (turbo) followed by strobe, loosen the head slightly for general mode, with three lower levels of Texturederation plus SOS.
All beamshots are on turbo mode at 5 feet with standard batteries. The camera automatically compensates for the brightness, so the different models appear the same brightness in the beamshots below, but when viewed normally.
||P1 CE OP
||P3D CE OP
||L2D CE OP