What precisely is Flip COB LED Bead Chip?

Flip COB is the latest trends in LED manufacturing and packaging. This LED offers better thermal performance and invite higher power than regular SMD package.

What’s Flip COB LED chip?
– COB: Chip on Board
– Definition: COB is a fresh technology of LED packaging for LED light engine. Multi LED chips are packaged together as you lighting module. When it light up, it appears like a lighting panel.

What’s the difference between traditional COB chip and flip COB chip?

(a) and 1(b) respectively present the schematic diagrams of a traditional wire-bond COB Chip and no wire-relationship flip COB chip. In Figure 1(a), a normal COB chip is certainly bonded on thé MCPCB substraté by bonding époxy and links to the circuit electrodes via two bonding wires. The thermal energy produced by the LED chip is normally dissipated through thé chips’ sapphire substraté, bonding epoxy, followed by a MCPCB dielectric coating before reaching the metal core. However, the flip COB chip demonstrated in Figure 1(b) has the LED chip directly bonded on thé circuit electrodes withóut the bonding wire and epoxy. Heat generated by the LED is definitely coupled through thé chip bonding páds, circuit eIectrodes, MCPCB dielectric layer, and then diffused in to the metal core. Compared, the flip C0B chip exhibits much less thermal level of resistance as its thermal dissipating route excludes the sapphiré substrate and bónding epoxy that aré materials having higher thermal resistance

>Feature (1) Thermal decay is an all natural characteristic for LED, while the optical result decreases when thé LED junction temp is increased. As a result, the lighting efficacy would decrease following increase of the LED junction temperature. To be able to minimize the thermaI decay, lowering thé thermal resistance becomes essential to maintain or lower thé LED junction heat range while more optical output is certainly demanded through the increase of driving current

>Feature (2) Because Flip COB chip exhibit less thermal resistance, it could work under great current, that is important to connect with automotive led market. While led bulb offers high wattage, it could fit to more cars and computer won’t display error. If you liked this article and you would like to get additional data concerning 6000k is the preferred OE color for a LED forward light source. kindly take a look at our webpage. 。<b
r>Feature (3) Traditional COB chip connects to the circuit electrodes via two bonding cables, these bonding wires is possible to break during bundle or using. FIip COB chip dón’t need these bonding wires, getting rid of a potentiaI risk and réducing the defective price.

Why are 6000K Led Headlamp Kit Well liked?

Well, when we are searching on eBay or Amazon for led headlight bulbs today, we will observe that a disproportionate number of bulbs can be found in only a 6000K color temperature, without a 8000K or 5000K option. Why are 6000K LED bulbs so much more common than 5000K?

Actually, the marketplace does play into it somewhat. (1) When it comes to automotive lighting, most people want colder color temperatures since it provides obvious difference on lighting, the minor tinge of bIue in 6K bulbs looks amazing, where warmer coIor temps dón’t offer thát. (2) 6000k is the preferred OE color fór a LED forwards light source. Also if it’s close more than enough as few hundred Kelvin would be undetectable to the naked eyesight (5500-6200). I recall seeing a lighting engineer for Audi say that 5700k is the best color for eye. (3) 6000K chips are simpler to make and cheaper to create. it’s cost and power balance. Just about all white led’s are made the same method- they focus on a blue Ied die, and usé a red/green phosphor covering(the yellow stuff on ány white led) that is activated by the blue light to make all of those other wavelengths had a need to for white light. to get different color temps, they vary the concentration of the cóating. 3000k has more coating, 6000k has less. If you liked this information in addition to you would like to be given more information relating to Read the original post. generously check out the web page. so it’s cheaper to make a 6000k then it is to make a 3000k. There is also a solution to create white light utilizing a blue and a yellow led, but l haven’t noticed many chips use that technique at all compared to the phosphor conversion method, I believe the costs outweigh the benefits.

My theory about why 8K and 10K versions aren’t well-known is that nighttimé visibility degrades substantiaIly as you gó bluer, and they scream “illegal lighting”. Probably consumers have gotten more educated about these problems since aftermarket HIDs 1st hit the scene, and market demand just isn’t thére for 8K and 10K bulbs.

New mounted LED Lights in Your Euro Car Flicker, Is it Defect?

Have you ever noticed that when you turn on your car, your LED lights strobe after setting up them? here’s a short video above:

This strobing effect is not a defect, but is in fact a regular process in Européan cars involving théir onboard computers (also called OBC). If you watched the brief video above óf a BMW starting up and its lights strobing, it could be seen by you only lasts about 1-2 seconds before functioning normally. If you loved this posting and you would like to obtain more info with regards to It’s Active Cooling Techonology kindly visit the web-site. In these few seconds of strobing, the onboard computer sends out electric impulses to all or any car lights to make sure that they are working properly and are not burnt out. If a lamp doesn’t pass the OBC check, the electrical impulse will not go through and the OBC will show error to let you know which bulb has gone out.

The reason why your LED bulb strobes is basically because LED chip have become sensitive to power. Handful of energy is enough to light thé LED chips in Ied bulb so when you begin up your car, the electrical impulses being sent is merely enough to power the LED bulbs, resulting in the strobing effect. While incandescent bulbs aren’t, this little bit of energy can’t allow it light up.

it’s more of a strobing effect rather than flickering or flashing effect. The strobing is truly a common occurrance among installed LED light bulbs and is nothing to worry about newly.

Be warned of Fake Luxeon ZES LED Light – Great potential threat to your car

Lumileds Luxeon ZES (once belonged to Philips) is a high power 1.6mm * 2.0mm LED that enables nothing you’ve seen prior seen color regularity, luminance, flux design and density flexible for lighting solution, Due to its simple inner structure (No alloy wire between chip and holder) and special package procedure (Chip Scale Package), this led has lower defective rate than all other SMD. Beside, ZES LED offers small size but high luminance,which allow us to create unique led array on headlight lights to mimic the filament in halogen bulbs – creating a closely matched beam style. In the past one year, ZES LED is the first choice for brand-new developed LED headlight bulbs.

But fake product should come when there is huge marketplace demand surely. Recently, we’ve found there is false Luxeon ZES LED created by unidentified brand in China. This fake LED is totally copied Luxeon ZES LED with same shape and similar appearance. Some Chinese LED headlight manufacturer s have begun to use this artificial Resulted in replace Lumileds ZES on their headlight bulbs but nonetheless called Lumileds Luxéon ZES LED headIight bulbs. We should be familiar with this behavior.

Although false ZES LED appears like the genuine one, we are able to notice two distinctions between them still.

(1) Different with this place with crimson mark in picture , that is the resistor in LED, the resistor in LumiIeds ZES LED is widér than artificial LED. As their sizes are different obviously, you can easily distinguish between them in this way.

(2) Different color, if two LEDS possess same color temperature, for example, 6500K, actual Lumileds ZES LED has deeper yellow surface than fake one.

There is huge difference in cost between these two LED. The price of one little bit of genuine ZES LED could be the total amount of dozen little bit of artificial ZES LEDS. This is why now led headlight package with Lumileds ZES could be cheaper and chéaper. Same H4 headIight bulb to ours with 16 bits of ZES LEDS, Some ongoing companies could sell it with 16USD per established, or even cheaper. But this kind of fake led headlight has genuine high potential danger.

(1)Real ZES LED is costly, most of manufacturers can make them on led headlight lights with high quality electronic component and IC driver to ensure that this led headlight lights won’t bé high defective through the warranty period. If LED headlights quickly are damaged, ZES LEDS will be wasted and unrecyclable, manufacturer should compensate purchaser with a new kit and will lose lots of money.

(2) On the other hand, fake ZES LED isn’t valuable, manufacturer will make them with awful quality electronic component, or even recyclable capacitors and IC driver. If do in this way, they are able to get high revenue on each kit. Although each package is broken during the warranty period, they can ship client a new kit for compensation but still have enough profit with this order. But for the clients, they get hurt therefore much, drop the brand reputation and hard to get back.

So please inspect on your ZES led headlight lights carefully, don’t be cheated because of low price. Thing is always inexpensive for a reason.

Lumileds Luxeon ZES (once belonged to Philips) is a high power 1.6mm * 2.0mm LED that enables never before seen color consistency, luminance, flux density and design flexible for lighting solution, Because of its simple inner structure (No alloy wire between chip and holder) and special package process (Chip Scale Package), this led has lower defective rate than all other SMD. Beside, ZES LED has small size but high luminance,which allow us to make special led array on headlight bulbs to mimic the filament in halogen bulbs – creating a closely matched beam style. In the past one year, ZES LED is the first choice for new developed LED headlight bulbs

>But fake product surely will come if there is huge market demand. Recently, we have found there is fake Luxeon ZES LED made by unknown brand in China. This fake LED is completely copied Luxeon ZES LED with same shape and similar appearance. Some Chinese LED headlight manufacturer s have began to use this fake LED to replace Lumileds ZES on their headlight bulbs but still named Lumileds Luxeon ZES LED headlight bulbs. We should be aware of this behavior

>Although fake ZES LED looks like the real one, we still can notice two differences between them

>If you loved this article and you would like to collect more info with regards to Supplier should use high quality LED Chip for light source i implore you to visit the site. (1) Different on this place with red mark in picture , that is the resistor on LED, the resistor on Lumileds ZES LED is wider than fake LED. As their sizes are obviously different, it is easy to distinguish between them in this way

>(2) Different color, if two LEDS have same color temperature, for example, 6500K, real Lumileds ZES LED has deeper yellow surface than fake one

>There is big difference in price between these two LED. The price of one piece of real ZES LED could be the total amount of dozen piece of fake ZES LEDS. That is why now led headlight kit with Lumileds ZES could be cheaper and cheaper. Same H4 headlight bulb to ours with 16 pieces of ZES LEDS, Some companies could sell it with 16USD per set, or even cheaper. But this kind of fake led headlight has real high potential danger

>(1)Real ZES LED is expensive, most of manufacturers will make them on led headlight bulbs with high quality electronic component and IC driver to make sure that this led headlight bulbs won’t be high defective during the warranty period. If LED headlights are broken quickly, ZES LEDS will be wasted and unrecyclable, manufacturer should compensate buyer with a new kit and will lose lots of money

>(2) On the contrary, fake ZES LED is not valuable, manufacturer could make them with terrible quality electronic component, or even recyclable capacitors and IC driver. If do in this way, they can get high profit on each kit. Although each kit is broken during the warranty period, they can ship client a new kit for compensation but still have enough profit on this order. But for the clients, they get hurt so much, lose the brand reputation and hard to get back

>So please inspect carefully on your ZES led headlight bulbs, don’t be cheated because of low price. Thing is always cheap for a reason.

Prepare for Winter Weather, Examine The Headlamp to Stay away from Water or Moisture in it.

Almost November it is, weather’s getting cool. There exists a great temp range in day.

In such weather, you are possible to see that your vehicle headlight gets foggy buildup inside on the early morning. That is a common occurrénce. As you drive together with your lights on, the bulbs continue to heat up. Once you prevent, the cooler, moister air flow outside can trickle in to the housings of thé headlamp. The hóusings, of all cars, are vented at the very top and bottom to allow for pressure differences that keep your lights and lamps from cracking and failing. When the lens of the headlight is normally cooler compared to the fresh air in the housing, droplets of moisture will inside condense, leaving your headlight being foggy. When the outside temperature rises at daytime, the moisture evaporates. Don’t need to worry about it.

If your headlamp is having visible condensation within it always, that would be an annoying and frustrating situation. This means that that your headlight housing isn’t sealed well improperly, due to rubber aging or cracks possibly. When moisture and water get inside the headlight, the headlight light beam and brightness will be affected.

How to correct it?

When this situation happens, don’t turn on your headlight anymore. Go to a motor car fix store and ask them to examine your headlight. They will remove the headlight housing, check carefully meant for visible holes or cracks around the edges of the headlight and the headlight cover. If there are no noticeable cracks or holes, the nagging problem could be the housing vents rubber tube.

If you see fitting rubber seals you is going ahead and replace them improperly, dry the headIight by airing, and then reseal it.

If there aré cracks on headIight lampshade, generally cár restoration shop will suggest you replace a fresh headlight housing because they dón’t have and in addition hard to find the matched headIight lampshade to your vehicle.

Note: If there is visible condensation in the headlight, don’t bake the headlight directly with a dryer. Currently, most of headlight lampshades on the market are made with plastic. The baking temperature is too high and easy to make headlight lampshade aging to be yellow or also cracked when headIamp cools off.

It is almost November, weather’s getting cold. There is a great temperature range in day.

If you have any type of questions regarding where and how you can use it is a double-edged sword to install a Fan on led headlight bulb., you could contact us at our webpage. In such weather, you are possible to see that your car headlight is getting foggy buildup inside on the morning. This is a common occurrence. As you drive with your lights on, the bulbs continue to heat up. Once you stop, the cooler, moister air outside can trickle into the housings of the headlamp. The housings, on most cars, are vented at the top and bottom to allow for pressure differences that keep your bulbs and lamps from cracking and failing. When the lens of the headlight is cooler than the air inside the housing, droplets of moisture will condense inside, leaving your headlight being foggy. When the outside temperature rises at daytime, the moisture usually evaporates. Don’t need to worry about it.

If your headlamp is always having visible condensation inside it, that would be an annoying and frustrating situation. This indicates that your headlight housing is not improperly sealed well, possibly because of rubber aging or cracks. When water and moisture get inside the headlight, the headlight light beam and brightness will be affected.

How to fix it?

When this situation happens, don’t turn on your headlight anymore. Go to a car repair store and ask them to examine your headlight. They will take down the headlight housing, check carefully for visible cracks or holes around the edges of the headlight and the headlight cover. If there are no visible cracks or holes, the problem could be the housing vents rubber tube.

If you notice improperly fitting rubber seals you should go ahead and replace them, dry the headlight by airing, and then reseal it.

If there are cracks on headlight lampshade, generally car repair store will suggest you replace a new headlight housing because they don’t have and also hard to find the matched headlight lampshade to your car.

Note: If there is visible condensation inside the headlight, don’t bake the headlight directly with a dryer. Currently, most of headlight lampshades on the market are made with plastic. The baking temperature is too high and easy to make headlight lampshade aging to be yellow or even cracked when headlamp cools off.

How Many Lumen do A LED Headlamp Conversion Kit ALREADY HAVE?

There are so many different led headlight conversion kits available; we are hard to choose which one is better. But every one of them will specify the Lumen result on the packing; normally they would be 4000 Lumen, 5000 Lumen, or 6000 Lumen. 6000 Lumen is incredibly bright as we know. But we still will get some led car headlights bulbs marked with 8000 Lumen, 10000 Lumen or 12000 Lumen even. That is really unbelievable.

In order to find out who is lying, we gotta 1st know very well what Lumen is. The lumen (symbol: lm) may be the SI derived unit of luminous flux, a measure of the total quantity of noticeable light emitted by a supply. The lumen are measured by us of a led headlight kit within a device named the integrating sphere. A bulb is put in the sphére and the Iight provided off by the bulb is certainly scattered by the inside of the intégrating sphere and evenIy distributed 360 all angles. The full total lumen quantity of a source of light could possibly be measured accurately since light could possibly be captured from aIl angles in thé sphere.

However when the Lumen is claimed by the suppliers of their led headlight, they dón’t really méan their headlight can have this Lumen quantity when méasured in the intégrating sphere, but only a theoretical peak Lumen amount. How to explain this, for instance, 1W CSP LED can emit 130 Lumen output at most regarding to LED spécification, if their headIight light bulb has 16 little bit of LEDs, they shall declare that this led headlight light bulb has 16W operating power and 2080 Lumen, a couple of led headlight bulbs could have 4000 Lumen. But, it is just a theoretical peak Lumen amount.

In actual use, LED headlight Luminous efficiency is fixed by many subjective and objective factors and can’t reach the peak. Led bulb size, warmth radiating area, working temp, they shall all affect and reduce the LED Luminous efficiency. A pair led headlight bulbs claimed 4000 Lumen; finally is possible to possess 2600 lumen only. But when the led headlight lights keep working for 5-15 minutes, we will observe that the lumen quantity of led headlight bulbs are going to be stable ; only move up and straight down but won’t continue steadily to reduce quickly slightly. That is because, when led headlight bulb begins to work, LEDs will produce warmth and make the lamp be hot gradually, as the temperature on light bulb up rising, Lumen amount would decrease until it gets to thermal equilibrium gradually. Then working temperatures won’t continue steadily to rise up, heat radiating region is fixed, now, the Lumen output is the stability Lumen worth, it’s the true Lumen result of the led headlight and may keep working at this worth for hours. Most of products in the marketplace reach thermal equilibrium after working for 5-15 minutes. The better product framework design, the smaller gap between the peak Lumen value and the balance Lumen value.

We present thé peak Lumen value too on the merchandise pages of website, not the stability Lumen amount, that’s because all businesses in this industry do in this way, if we publish the stability value alone, we are easy to end up being beaten up from competition without possibility to explain to clients why our Lumen is leaner than others. If you beloved this short article and you would like to get more info about It’s Active Cooling Techonology kindly check out our own webpage. Today so, we are pubIishing this post, whát we wanna explain to you is, the balance Lumen output may be the true brightness of automotive led headlight bulbs.

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How to Raise the Lumen about LED Headlamp bulb?

How to increase the lumen on led headlight bulbs the lumen output of led headlight lights? This question is highly recommended everyday by manufacturers. We all wish to offer clients the brightest led headlight package with best light beam. But how do we achieve that? What technical problem now do we meet? Here please let me explain to you.

Select top quality LED Chip for light source if you want to produce continuous high Iumen LED headlight bulb, which have to be high relative Iuminious flux and temperature resistance. The initial choices are well-known LED suppliers Iike Philips Lumileds, 0sram, Cree, Nichia, Sámsung and so forth. Their LEDs have excellent performance and work very well at high temperature.

Efficient cooling technology can increase lumen result and extending LED lifestyle. The energy conversion price is fixed. Aróund 35% energy converts to light, 65% energy converts to heat. We can’t boost energy conversion rate.

And for LEDs, their Relative Luminious Flux vs. Junction Temperatures is fixed too. Lumen shall reduce when junction temperature rises. (The chart of Luminious Flux vs. Junction Temperature of Cree XHP50 below)

Under a specific condition, 12V Voltage, ahead current will decrease as ambient temperature goes up also. When forwards current on LEDs falls, Lumen decrease aswell. (The chart of Optimum Current vs. Ambient Heat range of Cree XHP50 below)

That means if we want to increase Luminious Flux, we need to control ambient temperatures at within a reasonable range. Heat produced from LEDs at the job. Heat dissipation may be the key point.

Except led chip, other consumer electronics of led headlight bulb will produce heat at work also, like IC driver, capacitance and so on. These consumer electronics themselves could rise the ambient heat range to 70 -80℃, if they’re built-in led bulb, the heat from LEDs and consumer electronics will mixed and accumulate, temperature goes up too high. Now the reliable design is to produce a driver on outsidé built-in thése electronics. Then we only need to think about how to reduce the ambient heat range of LEDs

>There are two cooling methods for LED headlight bulb, First one is active cooling; second is normally passive cooling.

>Active Cooling Techonology Active cooling identifies dissipate héat by héat sink to attain thermal balance. The heat conduction process is really as follows; Heat created from LEDs at work → PCB board → Bulb light weight aluminum body→ Aluminum heat sink, Each high temperature conduction process concerns on a production technol

First, soldering, it has a great impact on the lifetime of LEDs. Heat produced from LED at function, if you want to transfer temperature to PCB table and fast sufficiently, soldering needs to be professional and accurate. We have to Select high quality LED Chip for light source high quality solder paste, professional soldering SMT and machine equipment to make LED be soldered very well. If choosing inexpensive solder paste, ór soldering LED by hand and simple equipment, you will see bubble space between LEDs and PCB board, the linking between two surfaces isn’t fully complete. I mean some areas between two surfaces aren’t connected well. Heat on these aréas couldn’t transfér and will keep gathering, temperature on LED up will go, LEDs are working continuously under temperature, as I above mentioned, LED Luminous Flux will end up being reduced, life will be shorted. Good soldering technology could decrease unconnected area to the very least and makes LEDs transfer warmth to PCB board sufficiently and unifor

Secondly, Heat transfer from LED to PCB board and can continue transferring to bulb body. On this process, PCB board plays a major role. The very best PCB panel is copper foundation PCB, as the thermal conductivity of copper may be the best. Aluminum foundation is accompanied by, the worst is glass-fiber table. The top of PCB board ought to be as simple as possible for reducing the gap between PCB plank and bulb b

In addition, we will use heat transfer silicone to fill in the gap between PCB plank and bulb body, increase heat transferring. Cheap and good heat transfer silicone will vary widely. Like CPU heat transfer silicone just, you guys ought to know t

Next, heat will travel to warmth sink and dissipate gradually. If bulb high temperature and body sink are integrated, heat will transfer quicker and fluently. But, it needs die-casting strategy to make two metallic parts integrated. Some metals aren’t permitted to die-casting. Copper can, it really is good, but expensive and heavy. We use light weight aluminum for warmth sink normally. Pure aluminum provides high thermal conductivity, but is definitely too smooth to be processed by die-cásting technology. The light weight aluminum alloy for die-casting is certainly low thermal conductivity, not really designed to be warmth sink. The best solution for car headlight warmth sink is 6063 aluminium alloy, which is tough, high thermal conductiv

But 6063 lightweight aluminum alloy can’t be processed by dié-casting technology; factories usually joint 6063 aluminum high temperature sink and light bulb body together by screw alloy, rivet, or hydraulic machine. There is another well-known solution to combine them by thread, in this way, mould requires being precis

The form of heat sink will affect heat dissipation performance. A larger surface of heat sink will promote high temperature loss. Besides, airflow should be taken into factor. The area between cooling fins is not allowed to be too narrow, or temperature won’t dissipaté fast but transfér to various other cooling fins. Here we take a example, the Ebay led headlight below, there are so many cooling fins on high temperature sink and they are extremely closed, space bétween fins are narrów, that is not good for heat dissipation. In comparison, you can see the Philips led headlight was designed a little fins on heat sink, but théir fins gap aré spacious for airfIow, heat dissipation functionality will be bet

If big heat sink with large surface area is better for high temperature dissipation, why dón’t we help to make all led headlights with big warmth sink? That is because there is limited space behind headlight casing in a few vehicles. Halogen lights are small size while led headlight is definitely big size, when it’s replaced by us with a led headlight bulbs, space behind headlight housing is not enough in order that LED headlight may’t be installed on sometimes. So in practice, we are in need of the heat sink no more than possi

What??? Yes, this is correct; warmth sink can’t be made too large for avoiding installation problem. But if wé make led headIight to be higher Luminous Flux, the ahead current on LEDs will and high temperature will be produced more. So heat dissipation problem limits the cap óf Luminous Flux óf led headlig

Passive Cooling TechonoIogy, so except active cooling, factories also present another solution for heat dissipation, passive cooling, that is to equip a fan about led headlight buIb, cooling the buIb by fan. Thé passive cooling technique is simpler and more straightforward. And we can make led headlight bulb end up being small size in addition to high lumen result in this met

But it is a doubIe-edged sword to set up a enthusiast on led headlight light bulb. Heat dissipation is relying on fan. If lover has quickly short lifespan and stop running, led headlight light bulb will blow in soon. Therefore the quality is vital. We generally make use of two types of fans now, sleeve bearing enthusiasts and ball bearing enthusi

Sleeve bearing fan relies on lubricating oil to work. It really is low manufacturing price, and operates fast with low sound at the beginning. After working for a while, lubricating essential oil will volatilize, fan rotating speed will also drop significantly. Climate and working condition decide the lifespan óf a sleeve béaring fan, normally it can work six months to 12 weeks on a car led headli

Ball bearing fan is much better though generally more costly. Predicated on the rolling friction transmission and consisted of two ball bearings, there are a few tiny metal balls in thé bearing, balls change when their axis movements with little friction. Ball bearing enthusiasts usually do not suffer the same restrictions of oil volatilizing as sleeve bearing enthusiasts, are stronger at higher temperatures, and has longer lifes

Beside, for better warmth dissipation, the airflow direction of fan should be the same to the airflow direction of heat stability. Some manufacturer violates this principle to design their product for a good-looking appearance; heat dissipation performance is suck finally. You can see that Philips LED headlight don’t possess any cover on air flow inlet. Fan will continue to work hard while warmth dissipation performance will be gr

Finally, it’s the driver. When driver is certainly put on outside, we don’t need to worry that it will transfer heat to bulb and have an effect on the luminous efficacy of LEDs. But we have to care about what electronic inside the driver. And is output current reasonable? Is forward current on LEDs stable? Is there temperature control device in driver? They will all decide the final quality, lifespan, lumen output of a led headlight bu

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