These 2 pack LED bubls are 14.99 RMB only, pretty cheap in the IKEA. Like most brand in the market. But Why? Is there something wrong with IKEA? Or are there many in the warehouse? Just like the Chinese Real estate inventory?
Package Box
From side and Back side
Label on the housing part, tell us the rating of this LED bulb. Like IKEA others LED bulb, including 3 part, diffuser, plastic housing, E27 lamp base.
Rating table
| Model No | |
| Input Voltage | 220 -240 Vac |
| Input Current | 48 mA |
| Frequency | 50/60 Hz |
| Wattage | 5 W |
| CCT | 2700 k |
| CRI | > 80 |
| lm/w | 80 |
| Dimming | No |
| Warm Up time | < 1 s |
| On Off Time | 15 K |
| Life Span | 15 K |
| Dimension | |
| Lamp Base | E27 |
This RYET 400 lm looks no flicker, it is better to our health. Its nice color.
Thermal Test
I do the thermal test at night in my location, test 2 point, one is on the housing, another one is on the top of the diffuser.
| Testing | Point 1 (Cover) | Point 2(Housing) |
| Ambient Temperature | 28.2 | 28.3 |
| One hour later | ||
| Base up | 39.6 | 75.8 |
| Base Down | 38.2 | 71.2 |
| Horizonal | 38.0 | 72.0 |
Thermal testing
What is going on with the output voltage? 3 LEDs in series, it is 3030 type LED chip.
The output voltage is higher as 140 Vdc, what is going on? Which brand LED chip does IKEA use? But it is only 5 W LED bulb. I have no idea, anyone know this, please share wit h us ? Or I made a mistake?
LED Driver Part
There are less than 15 components which are mounted on the LED Driver PCB. The dare code is 2015-09-25, is it made on the 2015 year. Em, I bought this in 2017 year! Why?
The letter on the Bridge and IC can not be read, sad.
All picture can be watch on the YouTube.com
Refer to :
http://www.ikea.com/cn/zh/catalog/products/90371204/
goughlui.com/2016/11/24/review-teardown-ikea-ryet-5w-7-5w-led-e27-globes/
blog.spitzenpfeil.org/wordpress/2014/11/21/spontaneous-led-bulb-teardown-ikea-200lm-candle/