About Us
One Stop Solution-From Design to Assembly
LHD Technology is a PCB Assembly Manufacturer with rich experience in PCB Assembly and technologies related to PCBA. Our professional capabilities allow us to customize production from prototype to series production for our customers.
PCB Manufacturing Service
LHD PCB is a leading manufacturer of advanced precision PCBs, headquartered in Shenzhen, China, with a factory located in Huizhou, Guangdong Province, China. At LHD Tech, we have been in the industry as your trusted PCB service provider for 21 years. Over these years, we have continuously refined our processes under the supervision of the highest qualified engineers. Today, we stand among one of the leading names specializing in high-precision PCB manufacturing services and custom PCB solutions. As your trusted Custom PCB manufacturing service provider, we specialize in crafting top-quality printed circuit boards (PCBs) for different businesses as per their industrial needs.
Whether you require single-layer, double-layer, or complex multi-layer PCBs, our PCB manufacturing service delivers exceptional results. We utilize cutting-edge technology and stringent quality control processes to ensure each board meets the highest industry standards. This unwavering commitment to quality guarantees reliable performance for electronic devices.
Why choose us for custom PCB
If you need a custom PCB, our customization service can design and manufacture the board exactly according to your project requirements. Whether it’s special materials, unique stack-up structures, or complex circuit designs, we can provide custom PCB that meet your needs.
Professional Team
Our team is composed of industry experts with rich experience in PCB design and manufacturing. We offer a vast range of customization options, including material selection, layer count, surface finishes, and configurations. This allows you to create a PCB that perfectly aligns with your application's unique demands.
Quick response
Our service team is ready to respond to your needs and ensure projects are delivered on time. Need a prototype PCB to test your design concept? We offer fast and efficient prototyping services to help you iterate and refine your design before full production.
High quality assurance
Every single product undergoes rigorous testing, under the supervision of qualified Quality Control Engineers to ensure that the products are 100% operational and functioning as per the customer’s specific needs prior to shipment.
Cost-Effectiveness
We offer competitive pricing to help you control costs while ensuring quality. We cater to businesses of all sizes, accommodating both large-scale production runs and smaller quantity orders for development or testing purposes.
Below are The Details of The PCB Manufacturing Service Production Step
We understand PCB manufacturing is a very complex and intricate process, spanning over about 20 different steps. Our PCB manufacturing service begins the moment you contact us regarding your inquiries and specific needs and undergoes various stages involving Inner Layer Image, drilling, solder mask, and FQC. Moreover, we offer comprehensive after-sale services to ensure that our relationship with our customers stays long after they have received their product, ensuring 100% satisfaction.
Certification
Application of Our Custom PCB Services
We cater to a wide range of industries and businesses with our PCB service. Our Custom PCB applications include:
Medical Equipment
Our PCB service is useful for a wide range of advanced medical equipment including medical imaging systems such as CT and ultrasonic scanners, monitors for different vitals, infusion pumps, and internal devices.
LEDs
PCB is a critical component of LEDs for residential and commercial setups alike. Whether it is used for illumination purposes or for a digital display, it is applicable to both.
Automotive Components
We offer PCB service for advanced automotive components including entertainment, navigation systems, electronic control systems, and various sensors.
In addition to the above, you can always rely upon our exceptional support and after-sales services for 100% satisfaction and complete peace of mind. For more details regarding our custom PCB services, please feel free to contact us anytime.
PCB process introduction
01
Design and Output
-Design: Use professional design software (LHD PCB supports various design software such as Altium Designer, Eagle, KiCAD, PADS, Cadence Allegro, Protel, Proteus, EasyEDA, etc.) to design PCB layout and circuit diagrams. When designing, factors such as component layout, signal integrity, and power layer design need to be considered. After completion, it is recommended to use the software’s built-in DRC analysis function to analyze whether the design is reasonable and correct.
-Output: After the design is completed, output Gerber files and NC Drill files (LHD PCB supports various forms of file production PCB, such as Gerber 274&274X, ODB, tgz, DXF, DWG, etc.). These files provide all the necessary information for manufacturing PCBs, including the layout size, drilling hole positions, and sizes of copper wires and solder pads.
02
DFM Analysis
-LHD PCB provides free DFM analysis: PCB DFM analysis is an important step in PCB manufacturing, and DFM stands for “Design for Manufacturability”. DFM analysis aims to evaluate the manufacturability of PCB design and provide suggestions for improving the design to make it easier to manufacture, assemble, and test. This helps to avoid problems during the manufacturing process, improve the quality and production efficiency of PCBs. (See more DFM analysis )
03
Preparation of Production Materials
-Selection of substrate material: The commonly used substrate material is FR-4, a glass fiber reinforced epoxy resin material with good insulation and mechanical strength. LHD PCB supports the production of various PCB boards, such as CEM1, CEM3, Fr1, FR-2, Fr4, Aluminum Based PCB, Metal Core PCB, Flex PCB and Rigid-Flex PCB, and High Frequency PCB (PTFE). In addition to the common types of boards mentioned above, there are also many special materials for specific purposes, such as ceramic substrates, polyimide (PI) boards, etc.
-Cutting substrate: Cut the large-sized board provided by the material factory into small boards that meet the required production line dimensions for subsequent processing.
04
Inner Circuit Production (For multi-layer PCB boards)
-Inner layer graphic transfer: Print the copper sheets and circuit patterns from the Gerber files used in production onto the copper foil of the inner layer core board using photoresist transfer technology.
-Etching circuit: By using dry film and chemical etching, unnecessary copper skin parts are removed, leaving the customer with the required circuit and solder pads.
05
Lamination (Used for multi-layer PCB boards)
The LHD PCB factory has multiple hot fully active laminating machines that can quickly and stably complete the lamination production of various boards.
-Stacking: Stack the inner core board and prepreg PP sheet together, cover the outermost layer with copper foil, and fix it with rivets to avoid sliding and displacement during pressing.
-Pressing: Melting PP sheets under high temperature and pressure conditions using a press, followed by cooling to solidify the material, thus forming a multi-layer circuit board. You can make as many inner layer core boards as you need, and LHD PCBs can produce up to 32 layers of circuit boards.
-Etching circuit: By using dry film and chemical etching, unnecessary copper skin parts are removed, leaving the customer with the required circuit and solder pads.
06
Drilling Process
-CNC drilling: Drill holes according to the positions specified in the customer’s design documents, and manufacture laser blind holes and buried holes on HDI boards according to the customer’s different designs. At the same time, the production of through holes and guide holes for plugins is also based on customer information.
-Stacking: Stack the inner core board and prepreg PP sheet together, cover the outermost layer with copper foil, and fix it with rivets to avoid sliding and displacement during pressing.
-Pressing: Melting PP sheets under high temperature and pressure conditions using a press, followed by cooling to solidify the material, thus forming a multi-layer circuit board. You can make as many inner layer core boards as you need, and LHD PCBs can produce up to 32 layers of circuit boards.
-Etching circuit: By using dry film and chemical etching, unnecessary copper skin parts are removed, leaving the customer with the required circuit and solder pads.
07
Production of Outer Copper
-Outer layer pattern transfer: This process is similar to the inner layer, which transfers the outer layer pattern to the outer copper foil.
-Etching copper patter: Remove excess copper through solution, leaving the tracks and solder pad required by the customer’s design in the board.
08
Immersion Copper&Panel Plating, and Surface Treatment
-Immersion Copper: The thin copper is deposited on the inner wall of the holes through electrochemical deposition, creating an electrical connection and preparing for panel plating.
-Panel Plating: By placing the whole production panel into an electroplating cylinder, a layer of copper is coated on the board surface under the action of the solution and electrolysis reaction. Different copper thicknesses are plated according to the customer’s required copper thickness, such as 35um/50um/70um/90um/105um/140um, etc.
-Surface treatment: The function of surface treatment is to improve welding performance and corrosion resistance by covering a layer of material on the PCB solder pad. LHD PCB can produce various surface treatments, including Tin Lead/Lead-free HASL, ENIG, Plating Gold, OSP, Immersion Ag, Immersion Tin, ENEPIG, Peelable blue mask, etc.
09
Print Soldermask And Silkscreen Printing
Soldermask printing: Apply solder ink on copper surfaces that do not require welding to prevent short circuits during welding. The LHD PCB factory supports various solder mask colors, such as green, matte green, white, matte white, black, matte black, blue, red, yellow, gray, purple transparent colors, etc. Customers can provide color cards, and LHD Tech’s PE engineers will match the corresponding colors according to the customer’s color card.
-Silkscreen printing: Printing component identification, component location, and other information on PCB soldermask for easy assembly . LHD PCBs normally use character printers for fast prototyping samples and screen printing for bulk production.
10
Milling and cutting the board to unit PCB
-Milling: Cutting or stamping production panels into the dimensions and shapes that customers need to deliver. The connection methods between unit PCBs include V-cut, bridge, mouse bite, etc. At the same time, our company can also produce punching. For some PCBs with low tolerance requirements and big qty, punching can be used to reduce costs.
-Silkscreen printing: Printing component identification, component location, and other information on PCB solder mask for easy assembly. LHD PCBs normally use character printers for fast prototyping samples and screen printing for bulk production.
11
E-testing and FQC
-E-testing: Use a flying probe testing machine or a fixture testing machine to check if the PCB is correct and if there are any short circuits or open circuits. LHD PCB supports flying probe testing and fixture testing, and all PCBs produced by LHD Tech undergo 100% E-testing to ensure that all PCBs are good.
-FQC and AVI testing machine: Check the overall appearance of the PCB, pad layout, and wiring for defects.
12
Packaging and Shipment
-Packaging: LHD PCB will vacuum package all PCBs to ensure that the boards are not damp for a certain period of time. Heavy foam will be added around all boxes to ensure that the PCBs are not damaged during transportation.
-Shipment: The finished PCB will be sent to the customer through various transportation methods. Our company supports various delivery terms, such as FOB, CIF, DAP, DDP, DDU, etc; At the same time, I can also ship to customers through various express channels, such as DHL, USP, FedEx, TNT, etc. If customers need sea or land transportation (China Europe railway transportation), they can also support it.
Custom PCB Solutions
We carefully take into account the specific requirements of our clients and offer custom PCB solutions as per the specific needs of our clients. Our state-of-the-art manufacturing facility, equipped with flexible production capabilities enables us to offer customized solutions to our clients in the shortest possible time.
