SFN55.2, SFQ55, SFN60, SFQ60, SFS80 and SFH55 LED info

Anyone know where to buy the SFS80 in 4000K apart from Kaidomain which no longer stock it in that tint. I’d like to grab a bulk lot for sale in the Convoy L21B to have in my store.

Seems like the SFS80 isn’t much better over the XP-L HI. The XP-L HI 3000K gets 503m and the SFS80 4000K gets 579m in a C8+ at 5.7A. If using a 4000K XP-L HI I doubt there’d be much, if any, difference. I’d love to run the SFS80 at 8A, but I see a few here reported them failing. I run a store and so taking the risk at 8A isn’t ideal,

They’re the same 3535 footprint aye?

The SFN55.2 is available in 3000K in this JKK76 flashlight.

I have got the JKK76 SFN 55.2 3000k ver, in addition to the 6500k. It’s a new experience. The tint isn’t particularly nice, it’s rather yellowish in the room (not very natural), but i’ll take it as this is one of the few rare lights that are high output and warm white.
But once you bright it out to the woods, park or apartment block walkway and switch on Turbo, everything about this yellowish tint is forgotten.

I also use it in the room as a ceiling bounce in setting 1 and 2, if i remember correctly 300 and 1k lumens. Pretty ok.

I also have the JKK76 SFN 55.2 in 6500k version. Ceiling bounced both 3000k and 6500k, the light is really neutral, maybe 4500k thereabouts. It’s definitely slightly warmer than my 5000k LH351D.

So, definitely usable……just not for those CRI purist purveyors. I’m just a long time regular flashaholic.

Do you have any means of measuring CRI?

The spec sheet that I’ve seen says the 3000K version of the SFN55.2 is only available at CRI95, so I’m wondering how accurate that is.

Bros, wonder how relevant is the following info?

Dondonghai is a flashlight seller, and has a SFN60 option. It lists Changda 昌达 as the manufacturer, supposedly changda is located in Fujian province.
https://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.95.15a77484MPpzAP&id=628993143844

Changda. Are they the real original equipment manufacturer or just some middle man, not sure. But there is a fair bit of info in here
https://item.taobao.com/item.htm?spm=a21wu.12321156.go-detail.1.40a1f9a1ZdFTLl&id=658331735786

For eg, SFN55 used in the JKK76 and SFN60 in the dongdonghai flashlights



Size and voltage options, eg 1st pic is 3, 9, 27 volts for SFN 55.

Nope bro……no means of checking CRI with a spectrometer. yes, check out that Taobao listing, by Changda. The spec lists as CRI 95 for 3000k only.

But, any mobile phone app that does a decent but still usable approximation? :person_facepalming: I can do a reference comparison with my other lights with normal CRI 70 stuff. The only high CRI light i have is a sofirn SP36 with LH351D at 5000k CCT, shd be decent and yield some results.

That changda taobao listing lists 3000k @ CRI 90. Available only for SFH43 and SFN60 on Changda though. But i suppose other emitters also would be high CRI at 3000k?

Thanks for the spec sheets - it seems like you are also an avid Taobao browser. The SFN60 is more efficient than the SFN55 but I haven’t seen it any flashlight manufacturer use it yet.

The Chinese manufacturers now appear to have the ability to produce flat, high CRI, high output 3V emitters. Even round emitters are possible as with the Yinding. Emitter size is still an issue though. Unfortunately, they aren’t really targeting the flashlight market.

This fella in the reviews section said is not high CRI, according to what the seller told him. There will be high CRI release in future though. He reviewed on 3rd of Apr 2022.
He bought a SFN60 3000k@CRI90.

问了老王,才知道只是低色温,并不是高显色的。3000k高显色版本光通光效会大大降低同时发热会明显增大。后来商家主动沟通,说后续会有高显色的并且会补发,后续拭目以待,也希望国产能脚踏实地越做越好。
2022年04月03日 12:11颜色分类:SFN60_3伏_9芯*60mil_XHP70款E[35A极亮10000流明] 选色温:3000K@CRI90 选基板:灯珠(不带板)

Another fella in the reviews section said the efficiency is also lower than Cree. This is what i noticed too from my usage from the JKK76 with 7pcs SFN 55.2 6500k and Amutorch DM70 with just 4pcs Cree 70.2, both at say similar OTF output. In fact, the JKK80 ceiling bounce is 180 raw value, and DM70 is 200……corresponding to 2k+ lumens OTF. After 8 minutes, the Amutorch DM70 is slightly cooler, despite it being a slightly smaller light with lower mass and only 4 emitters (i think both SFN 55.2 and Cree 70.2 have similar emitter die surface area if i am not terribly wrong).
Is it possible that the driver efficiency makes such a big difference between the 2 lights? I doubt it.

t*6

性价比很高,最大的优点就是便宜,几块钱的p50都可以达到creexhp70的亮度,是我见过最便宜的小面积,大功率led,缺点是光效相对较差。光效为cree的45%–75%左右,毕竟cree在材料和技术上有深厚积累,卖的led也是天价。。需要注意的是即使电压很高,只要电流没达到额定值还是可以一直通过增加电压来增加电流,当电流达到某个值之后,再增加电压,这时电流可以在增加,但亮度不增加,需要自己找最合适的功率。 下面是我测试的数据,可以供大家参考,第一组是cree xhp 70的数据,淘宝200块的手电筒,下面三款都是这家的。测试时,手电筒和led灯都是加上同样的聚光杯,在同样的位置直射向天花板,亮度感应器向上平行放在led位置附近,测的是天花板反射的亮度,因为直接测数据跳动太大,误差太大。已知cree的手电筒极亮时3200流明,可以得到标准流明与测试值的比例大概1比13,再推算出这款led的流明数据。

Yea bro, no $$, hence gotta buy a lot of my stuff from TB and similar platforms. :person_facepalming:
I used to buy a fair bit from Amazon USA when they still had the usd 125 free shipping service….from Amazon LLP, not 3rd party….mainly more branded stuff.

But about 2 years ago, cainiao took over the few official forwarders (4PX, Prouter, 中通 etc), did a monopoly and then of course with the shipping increase, prices shot up like 2 times. eg last time i remember was 9.5rmb or 10rmb per 0.5kg (first 1 kg 29rmb to 43rmb depending on forwarder). Now is 20rmb for initial 0.5kg and subsequent 0.5kg 20rmb.

Then for sensitive items that Cainiao refuse to ship, i use private agents which then use certain forwarders (eg ComOne)……which use a certain land route into HK and then air ship out from HKIA. Cainiao now ships through either Shenzhen or Guangzhou (Bao-an or Baiyun), and another one from Shanghai pudong i think (warehouse in Hangzhou)

SFN60 used by dongdonghai, i gave the TB link above.
Too bad, they are driving it only to 3000 lumens, i confirmed with the seller as well. They also dont do bigger lumen monsters also, which i dig. heh….

This fella’s ceiling bounce testing……

Voltage, current, power, meter raw values, estimated lumens, lumens/watt efficiency

SFP 55. 22k lumens……but i guess more like 15k lumens practical. Need 4-7 pcs of this into a 1kg host powered by 4 pcs of 21700 and with a basic but reliable driver….the chinese can do it….just whether or not it is profitable domestically :beer:

I actually have a xtar triple xm-l with magnetic ring selector switch weighing like 1kg with its 90mm head, and i remember the Haikelite MT09R triple 70.2 being nearly 800g or so, and the triple sbt-90.2 HK90 being 1.1kg.

https://item.taobao.com/item.htm?spm=2013.1.0.0.90a6181eQqqZOi&id=660283212745&scm=1007.12144.95220.42296_0_0&pvid=151c4c2f-ac1e-4dba-a467-fc91fffe1ef4&utparam={"x_hestia_source"%3A"42296"%2C"x_object_type"%3A"item"%2C"x_hestia_subsource"%3A"default"%2C"x_mt"%3A0%2C"x_src"%3A"42296"%2C"x_pos"%3A3%2C"wh_pid"%3A-1%2C"x_pvid"%3A"151c4c2f-ac1e-4dba-a467-fc91fffe1ef4"%2C"scm"%3A"1007.12144.95220.42296_0_0"%2C"x_object_id"%3A660283212745}

3 volts 25 die

https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-22419669857.19.300e4bcalockx8&id=656579221712

No graphs. Just prices.

XHP35 XHP35.2 XHP35.3 SFS75 SFQ43 40瓦LED灯珠 XPL SST20 LED
https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-22419669857.15.300e4bcalockx8&id=657014582280

XHP50 XHP5.2 XHP50.3 SFQ55 SFQ60 SFN43 100瓦LED灯珠 ST40 LED
https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-22419669857.13.300e4bcalockx8&id=656954117685

SFN55.2 available on Kaidomain

>3V 30A

Yeah, this thing will not have a single ounce of efficiency lmao.

Emitters that can take high amps are usually quite efficient at lower currents. For example, the SFP55 above claims 5000 lumens at 10A which is over 150 lm/W efficiency.

They are inefficient of course on direct drive.