2025-04-21
- Type: multi die, flip chip
- Bin: —
- Color group: — (1800 K)
- CRI: 95
- Rated voltage: 6 V
- Max. Forward current: — mA
- Max. Peak current: — mA
- Viewing angle: — °
- Thermal resistance: — K/W
- Max. Temperature Tj: max. —°C
The LED tested here was purchased on Goofish, a Chinese second-hand platform, in March 2025. Apart from the data listed above or a data sheet, I do not have any further information.
The NBQ86 is somewhat reminiscent of an XHP70.3 HI, whereby the extremely orange phosphor layer and the virtually invisible gaps between the four LED chips are striking. The phosphor was probably applied as a gel, albeit uncleanly; it is possible that the layer was only applied after casting with more silicone compound.
The emitter is 7.00 x 7.00 mm in size and has the 7070 footprint. Commercially available 7070 boards can be used without any problems. The cut-out triangle in the contact area indicates the cathode.
The honeycomb pattern in the thermal pad is unusual. It presumably serves to absorb excess solder in the small gaps during reflow without it escaping from the sides, which makes reflowing by hand easier.
Due to the thick phosphor layer, the LED chips appear blurred at the lowest operating current. The particle size of the phosphor is very small, which makes the surface very even. However, a slight donut hole is likely to occur, as is common with many multi-die LEDs. There are no color distortions or unevenly applied phosphor.
The LES is 24 mm^2 in size.
- Maximum reached at 17.4 A, at this point 3902 lm @ 7.12 V
- Power at maximum 123.8 W
- Efficiency at maximum 31.5 lm/W
Data for 25 °C Tsp (at 85 °C the luminance values are around 13 % lower).
As no information on the maximum current is available, only the maximum possible current and the characteristic curve are used for the evaluation.
The efficiency is typically very low for a high CRI 1800 K LED. The SFT-70 with its smaller chips has a similarly low efficiency despite the colder CCT of 3000 K, as does the SFT-40 (albeit in the lower output range up to around 12 watts).
The FFL351A 1800 K achieves around a quarter of the output of the NBQ86 with its single luminous surface. On the whole, it can therefore be said that it is very similar to the FFL707A with 1800 K (which was only available in very small quantities at one time) and the NBQ86 is basically an FFL351A times 4.
Almost 4000 lm from an LED with extremely warm CCT is nonetheless a good value and is probably only surpassed by the FFL909A with 1800 K. This is therefore one of the most powerful emitters with high color rendering and 1800 K color temperature.
Due to the low efficiency, the illuminated area is low. Due to the lack of lateral radiation in the illuminated area, the luminance is only slightly lower than that of the significantly more efficient FFL707A 4000 K. The LED is not suitable for pure throwers; an all-round light pattern can also be expected with larger reflectors.
Apart from a possible slight donut hole, the LED is suitable for use in optics without any problems. With a heavily textured reflector (orange peel = OP), the beam should be perfectly fine.
The tint is extremely good. With a slightly negative duv, the LED tested here produces a very warm, pleasant light without a tint shift. The spectrum is very similar to that of the FFL351A 1800 K, only the blue peak is slightly less pronounced in the NBQ86. However, this is barely perceptible to the naked eye in a direct comparison.
The low color temperature is achieved here with a mixture of YAG:Ce3+ and Sr2Si5N8:Eu2+.
There is no strong tint shift with increasing current.
- Ra: 95
- R9: 84
- CCT: 1836 K
- duv: -0.0007
The NBQ86 is a good LED, which is suitable for flashlights and above all represents an alternative to the FFL707A. Unfortunately, this LED is no longer available in China, its history is unclear and the workmanship is also in need of improvement.
If it were still available or even available in the West, it would still get a clear recommendation here if high color rendering, a good beam and very warm light with higher output are desired.
Thank you for reading this test. 