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Have you noticed that now more and more of our lighting is using led lighting.What is LED? Compared to the traditional light bulbs, LEDs have lower power consumption, longer lifetime and higher energy efficiency. In the PCB industry,when we say LED PCB, it refers to the pcb used for LED lighting, if you are looking for a suitable LED PCB for your lighting system, this article may bring you something. WHAT ARE LEDS COMPOSED OF?LED is an initial light-emitting diode that produces light when an electric current passes through. LEDs typically have negative and positive electrodes, which generate light in the visible light region.The LEDS are glued to the PCB by soldering process and have electrical connections for lighting.Since light-emitting diodes dissipate a lot of heat when they are in use, when you are designing LED, the metal core is usually the best choice for LED PCB, it is because that it dissipates heat more faster. Among them, the metal material aluminum is the most widely used
1、 Purpose: Cut large pieces of sheet metal into small pieces of various required specifications. 2、 Process flow: 3、 Equipment and function: 1. Automatic cutting machine: Cut large materials into various fine materials. 2. Rounding machine: Grind the dust ends of the plate corners to a round shape. 3. Washing machine: Clean and air dry the dust and impurities on the board machine. 4. Oven: Furnace board to improve the stability of the board material. 5. Word marking machine; Type a label on the edge of the board for marking. 4、 Operating specifications: 1. Before starting the automatic feeding machine, check the set size to prevent incorrect feeding. 2. After cutting the inner layer board, attention should be paid to adding marks to separate the materials horizontally and vertically, and avoid confusion. 3. When handling the board, gloves should be worn and handled with care to prevent scratching the board surface. 4. After washing the board, it is necessary to pay at
The drill types of PCB drill bit control drilling machine: the drill bits for PCB drilling include straight shank Fried Dough Twists drill, fixed shank Fried Dough Twists drill and fixed shank shovel drill. Straight handle Fried Dough Twists drills are mostly used for single head drilling machines to drill simple printed boards or single panels. Now they are rarely seen in large printed board manufacturers, and their drilling depth can reach 10 times the drill diameter. When the substrate layer is not high, using a drill sleeve can avoid drilling deviation. At present, most manufacturers use CNC drilling machines, which use fixed shank drill bits made of hard alloy and can achieve automatic replacement of drill bits. High positioning accuracy, no need to use drill sleeves. Large helix angle, fast chip removal speed, suitable for high-speed cutting. Within the full length range of the chip removal groove, the diameter of the drill bit is an inverted cone, resulting in less friction
1. The ideal adhesive layer thickness for bonding is 0.01-0.05mm, and either too thin or too thick can affect the bonding performance. 2. Ensure that the adhesive layer absorbs sufficient ultraviolet energy to achieve the best curing effect, otherwise it may affect the adhesive performance of the adhesive layer. 3. Do not move the material back and forth when exposed to ultraviolet radiation, otherwise it may cause the adhesive layer to turn white and the bonding strength to decrease. 4. The remaining glue should not be returned to the original packaging, and should be stored at room temperature and sealed away from light, avoiding contact with children. 5. This product has slight irritation to the eyes and skin. If it accidentally splashes into your eyes, please rinse immediately with plenty of water. If in contact with skin, Rinse with soap. If the situation is serious, please see a doctor. It is recommended that the glue applicator wear professional UV resistant glasses and
① The 1000 series represents the 1050, 1060, and 10701000 series aluminum plates, also known as pure aluminum plates. Among all the series, the 1000 series has the highest aluminum content, with a purity of over 99.00%. Due to the absence of other technical elements, the production process is relatively simple and the price is relatively cheap, making it the most commonly used series in conventional industries. The majority of the products circulating in the market are the 1050 and 1060 series. The minimum aluminum content of the 1000 series aluminum plate is determined based on the last two digits. For example, the last two digits of the 1050 series are 50. According to international brand naming principles, the aluminum content must reach 99.5% or above as a qualified product. In China's aluminum alloy technical standard (GB/T3880-2006), it is also explicitly stipulated that the aluminum content of 1050 should reach 99.5%. The same principle applies to 1060 series aluminum plates
Audio devices Input and output amplifiers, balanced amplifiers, audio amplifiers, preamplifiers, power amplifiers, etc. Power supply equipment Switch regulator, DC/AC converter, SW regulator, etc. Communication electronic equipment High frequency amplifier, filtering device, and reporting circuit. Office automation equipment Motor drivers, etc. automobile Electronic regulators, igniters, power controllers, etc. computer CPU board, floppy drive, power device, etc. Power module Inverter, solid-state relay, rectifier bridge, etc. Lamps Lighting With the promotion of energy-saving lights, various energy-saving and colorful LED lights have become popular in the market, and aluminum substrates used for LED lights have also begun to be widely used
Material: Plastic; It can effectively release the static charges accumulated on the surface of the object, so that it does not generate charge accumulation and high potential difference; It has multiple advantages such as toughness, wear resistance, moisture and corrosion prevention, thermal insulation and shock resistance, economy and durability. The anti-static turnover rack can greatly reduce the damage rate of electronic products during the production process, reduce costs, and improve product quality and profits; The main purpose of the anti-static turnover rack is to eliminate static electricity, and it is widely used for the turnover loading and storage of PCB boards during the production process. Resistance value: below the 6th power of 10; L-shaped turnover rack, also known as PCB board turnover rack, is widely used in SMT processing, machinery, automobiles, home appliances, light industry, electronics and other production enterprises. It is acid and alkali resistant, oil
PCB double -sided rigid printed board Double -sided rigid version → double -sided copper covered plate → feeding → stack board → CNC diamond guide pores → test, removing burr brush → chemical plating (metal of guide holes) → (full board electroplating thin copper) → inspection brush → Net Printing circuit graphics, curing (dry membrane or wet film, exposure, development) → inspection, repair board → line graphics electroplating → electroplating (anti -nickel/gold) → de -printed (sensor) → etching copper → (( Retirement) → Clean brush → Net printing and welding graphics commonly used thermal solidification green oil (light -sensitive dry film or wet film, exposure, development, thermal solidification, commonly used sensor thermal solid green oil) → cleaning, drying → net print marking character graphics graphics graphics graphics graphics graphics graphics graphics , CITC → (spray tin or organic welding film) → Machining → cleaning, drying → electrical interrupt detection → inspectio
PCB process flow chart It can be seen from the process flowchart that the multi -layer board process is developed on the basis of double -faced metal chemical technology. In addition to the two -sided process, it also has several unique contents: the inner layers of metalized holes, drilling and removing epoxy drilling, positioning system, layer pressure, and special materials. Our common computer board card is basically a two -sided printed lineboard of epoxy resin glass, one of which is the other side of the installation element and the other side of the component foot welding surface. The component foot divide vertical welding surface we call it as a pad. Why don't other copper -guided line figures not on tin? In addition to the pads and other parts of tin welding, the other parts have a layer of welded welding film. Most of its surface welded films are green, and a few use yellow, black, blue, etc. Therefore, in the PCB industry, welding oil is often called green oil. Its role
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