SSC P7 in an Ultrafire C2

Over at the CandlePower Forums mod discussions, the Seoul Semiconductors Z-Power LED P7 has been one of the most popular LEDs. The reason is simple: it puts out 700-900 lumens at 2800 ma. That’s very bright.

In the Home Made and Modified Lights section, jirik_cz modded his Ultrafire C2 flashlight with a SSC P7. For power, he used a Li-Ion 18650 3.7V battery directly driving the LED. It is a simple and elegant mod.

I happened to have a spare Ultrafire C2 flashlight waiting for a great idea like jirik_cz’s mod. I already had the P7 emitter (C bin) mounted on a heat sink base. An advantage of having the P7 emitter on a heat sink base is that the positive base of the bare emitter is isolated from ground.

I used a Dremel to enlarge the Ultrafire pill so the P7, on some heat sink compound, fit perfectly.

For the positive battery contact side of the pill, I stripped a 17mm diameter circuit board and soldered the LED leads to it. To accommodate the larger diameter LED, (the Ultrafire C2 uses a Cree XLamp® XR-E LED), I enlarged the hole in the reflector with a reamer.

Thanks to jirik_cz, now I have a 5″ (130mm) long flashlight that is a bright as my Roar of the Penguin.

Some Bright LEDs

In an endless quest for brighter LEDs for my flashlight modding, I received some LEDs today that I ordered from DealExtreme.com. DealExtreme is a Hong Kong based vendor that sells DIY flashlight parts, among a lot of other (some interesting, some not) – junk.

Seoul Semiconductors Z-Power LED P4 (U bin)
Cree XLamp® XR-E LED (Q5 bin)
Seoul Semiconductors Z-Power LED P7 (C Bin)

Seoul Semiconductors says, “(the) Z-Power LED P7 series is single LED package providing the world highest brightness of 900 lumens and the efficacy of 90 lumens per watt to replace the conventional bulbs.

These are all my posts about flashlights.