Hello , MR16 LED Lamp.
You can do more for user. LED lighting tech are good to our earth to cut the Co2 and energy saving.
In fact, we find some bad user experience, due to the bad quality. It wastes money and time! Most said it is good to replace MR16 Halogen lamp. But some find that bad thing, including “disco light”, size, overheat, lifetime short, etc. We choose some comment form the Buyer.
Sad Facts! Learn lesson From Amazon buyer !
UK User Comment
1, Size is not fitted! [1]
2, Troublesome flickering [2]
3, These are hardly dimmable, flickered like crazy until my transformer blew. If you’re not on a dimmer switch you might have more luck. [2]
4, Fitted 18 bulbs 10 failed in four months.seems no chance,sending back. Ten faulty.over heat and cut out.[3]
5, Comment: The flickering will drive me mad![3]
6, Still in the box, flicker [3]
German User Comment
1, Ich habe ein dutzend OSRAM 12V 35W Halogen Lampen durch die LED 5,6W 12V ausgetauscht. Nach einer halben Stunde hat es sehr stark und eckelig nach verbranntem Plastik gerochen. Eine LED war auch aus. Ich habe schnell das Licht ausgemacht, eine LED war komplett verschmort. Siehe Fotos im Anhang. Gestern habe ich die kaputte LED ausgewechselt, und zur Zeit ok.
Die anderen 10 LED, in der gleichen Art von Fassung, sind ok. [4]
Note: It seems to hot for the material, this LED MR16 may be used for enclosed luminiaire, and the material is bad.
Spain User Comment
1, Bien, recibí el producto, el precio esta muy bien pero al fina a mi no me ha merecido la pena, no tienen 5W tienen menos con lo que la luz es muy pobre, ademas me ha llegado con la cogida GU 10 en vez de la GU 5.3 y después de quejarme, me han ofrecido tres euros, no me parece bien pero aceptare, tampoco estamos hablando de grandes cantidades, no lo recomiendo, a no ser que al equivocarse en el envió , mi caso no sirva para una valoración correcta. en mi caso estoy decepcionado con esta compra. [5]
Note: Cannot believe, it writes outside of box in Chinese and send the wrong type to user!
Japanese User Comment Amazon
1, 他の方のレビューを参考、信用して交流ハロゲンランプの代わりに購入いたしました。
AC100Vの家庭用器具での使用したところ交換してスイッチを入れたとたん『ボン！』といゆう音と共に
煙が出てお亡くなりになりました。。焦げ臭い臭いが鼻をつきました。
器具のソケットをそのまま使えるだけで決してそのまま『代替できるわけではない』ので皆さんご注意下さい。
かならず直流に変換する専用AC/DCコンバーターが必要なのなら、明記すべきではないでしょうか？[6]
Note: I am not very good at Japanese, guess this Japanese user does note know the MR16 use for low voltage 12 VDC/AC, and there is no instruction guild line for user.
France User Comment
1, Produit décevant , Les ayant installé en lieu et place d’ampoules 12V 20W je suis déçu car les leds présentent un clignotement
A noter que d’autres ampoules led (certes plus chères) ne présentent pas du tout le même problème[7]
2, Peu fiable, déjà une qui ne s’allume plus et une autre qui clignote de temps en temps. fiabilité plus que douteuse. les halogènes remplacées avaient plusieurs années. où sont les économies ? [7]
United State User Comment
1, These do fit in some older recessed housings…[8]
2, The LED keeps flickering. We cannot tolerate it. We are using it without dimmer. Will return back.[9]
3, False Advertising!! It writes 450 lx on the box, but show 500 lx in the website.[10]
Canada User Comment
1, The pins are much longer than my old MR 16 halogen bulbs. The pins are therefore exposed after plugged in.[11]
2, Lasted 6 months. Though they are sold as ‘dimmable’ they flicker and don’t dim very well. Avoid.[11]
3, Don’t buy… they will stop working after a few months![12]
Is there any bad thing happened in using the LED MR16 Lamp?
Yes! According to some research, like USA Depament Of Energy SSL Program and Southern California Edison, they has been issued some reports about the LED MR16 challenge.
There are many types in the market.
DOE Caliper 22[15]
- Lamp Appearance
Looking at the above picture, there are a handful of LED MR16 lamps available in every market. Some may be lager, longer, or have a different shape than the standard one. This can be result in not fitting properly into the luminaire or track heads, or may harder use accessories like lens, louvers, screens, or filters.
- compatibility
This is the major issues for LED MR16 lamps, considering replacement of a LED MR16 lamp, the dimmer, ballast including electronic or magnetic ballast, the is complex system cause the flicker, low power factor, even shut off due to some are not met the min transformer loads.
Via YouTube
- Distribution Of Light
Halogen lamp are great to use of focal lighting in the retail, hospitality, hotel, residential and museum application. Specially for the retail and museum, the beam angle is important. But now the LED MR16 lamps .
- Quantity Of Light
Many brand LED MR16 lamp says their product are same as the 20 /30 /50 W halogen, however someone may feel the “light is is same!”. Yes, the feeling is right, some reports said LED MR16 lamps is NOT designed as a direct one for one replacement for the corresponding halogen lamp, and even some brand claims are wrong.
- Heat Dissipation
In general, LED MR16 Lamps work best inthe open air, such as with a gimbal ring track head. Unfortunately, many products designed for LED MR16 Lamps are compact and enclosed. So the effecte of thermal environments on the temperature inside an LED source are dramatic. It would hurt the LED MR16 quality and life.
- Lighting Quality Over Time
It is natural, everything will get older, thought long time LED chip. We should be noted that the part in the every LED Lamp is not lived as long as the LED chip. It is said that some LED MR16 lamps showed failed pointed. including the cracks on the enclosure, color shift, etc.
Form MR16 LED Retrofit Lamps: Quality, Consistency and Reliablity.[16]
How can you make A LED MR16 LAMP?
Here you can see the below picture to learn the construction of CREE LED MR16 Lamp, most LED MR16 including 6 parts. We are talking each part based on the American lighting Safety Standard.
Picture Form Cree Inc [13]
1, Contact Pins
With 80% copper at least, 2 provided, 1.5 mm diameter, spaced 5.3 mm center to center, and extended 7.4 mm from Material Enclosure, In China, we can buy this thing from TaoBao Or other websites.
2, Material Enclosure
In the North America, it is stringent to use qualified material. We can find the power database in the IQ DataBase[14] of UL website, Rated V-0, Temperature, Thickness, etc.
Some Powerful Material Company Listed:
| 1 | A SCHULMAN PLASTICS (DONGGUAN) LTDChina |
| 2 | KINGFA SCI & TECH CO LTD China |
| 3 | LG CHEM (TIANJIN) ENGINEERING PLASTICS CO LTD China |
| 4 | NAN YA PLASTICS (HUI ZHOU) CORP LTD China |
| 5 | RADICI PLASTICS (SUZHOU) CO LTD China |
| 6 | SAMYANG ENGINEERING PLASTICS (SHANGHAI) CO LTD China |
| 7 | TEIJIN CHEMICALS PLASTIC COMPOUNDS SHANGHAI LTD China |
| 8 | WUXI NEW HONGTAI ELECTRICAL TECHNOLOGY CO LTD China |
| 9 | SABIC Chemical Manufacturing Company |
| 10 | Bayer Material Science |
| 11 | 3M Company |
| …… | …… |
3, LED driver
3.1 Output Leads , 24 AWG, tem 105ºC, 300 V min, with epoxy at solder connection to LED board. [14]
3.2 Fuse, rated 4 A, 32 V, mechanically secured and soldered to PWB. [14]
3.3 Driver PWB ,printed wiring board, double/single sided. [14]
3.4 Winding devices (Inductor) Ferrite, enamel copper wire , fully covered with electrical tubing.
3.5 Potting Compound , some using potting to heat dissipation, material grade, suitable temperature, same as the material enclosure,.
3.6 Other Components on Driver PWB , Electrolytic capacitors , resistance, diode.
(Wire, PWB(PCB),Fuse, can also search in UL IQ database [14])
But in other area, may be there is no need to use this qualified material enclosure according to IEC/EN standard, if pass the material test.
4,Heat Sink
Die-cast aluminum alloy, with integral cooling fin.
5, LED Board
Printed wiring board, consisted of LED packages, soldered on LED board.
6, LED Diffuser
Same as Material enclosure.
7, Diffuser Mounting Ring
Same as Material enclosure.
How To Choose A Right LED Bulb?
1, Check your lighting product, see below lighting application, open air? enclosed ? Size? etc.
2, Choose the Right Color, See Color of LED below:
3, Choose the Right Wattage
Now from the lumen view, the right wattage of LED MR16 TO retrofit a MR16 30 W is about 8W. You can find a lot of wrong Ad in the outside box, bad guild line.
4, Take Care The Compatibility
You can see below video to learn this flicking. But you should note that the MR16 LED lamp seems fine, USING for the test ballast and dimmer only. It is not to say this brand MR16 LED Bulb that fitted with every ballast and dimmers.
You can also seek out the compatible product form manufacturer, at a minimum, they may tested the combinations of LED MR16 Lamps, transformers and dimmers at systems level. Or you can perform an extended duration mock-up of entire circuits.
- How About PHILIPS MASTER LED 7W MR16
PHILIPS Master LED 7W MR16 Instruction [17]
PHILIPS Master LED 7W MR16 Instruction [17]
- How About Osram STAR® MR16 Lamps
Osram STAR® MR16 Lamps[18]
- How About Cree MR16 Series TrueWhite® LED Lamp
Cree MR16 Series TrueWhite® LED Lamp[19]
Other than below, recommended to buy the metal enclosure than the material. LED MR16 lamps vary substantially, both in their performance and compatibility with existing infrastructure. Careful consideration and evaluation of operating characteristice is required when converting from conventional sources to LED.
Refer:
10, http://www.amazon.com/dp/B00OSOXOGQ/ref=psdc_2314207011_t1_B00JUH7V3I
15, CALIPER Application Summary Report 22: LED MR16 Lamps, Page 9, June 2014.
16, Master of Engineering in Environmental Technology & Sustainable Energy, at Massey University, Albany New Zealand. Susan M. Mander 2014
17, Technical application guide PHILIPS MASTER LED 12V Dimmable MR16
18, STAR® MR16 and MR 11 Electric Transformer Compatibility
19, http://lighting.cree.com/products/indoor/lamps/mr16-series