PCB Assembly Contract Manufacturing for RoHS Complaint and PCBA for Full Turnkey Services

Since the establishment, our company has always adopted the corporate culture spirit of "diligence, sincerity and trust" to win the support and trust of the majority of customers in the society and establish a good image in the industry of One Stop pcba electronic contact main-board, PCB Assembly Telecommunication Control Board, Printed Circuit Board Assembly Medical. We adhere to the tenet of customer first, design and produce high-quality products around customer needs, and serve domestic and foreign customers with brand-new concepts and innovative spirit. As a manufacturer, providing high-quality products and reliable services are only the basic conditions for gaining customer trust. We continue to invest in training of employees and various equipment to meet the ever-increasing customer needs and changes.

1. Pcba full Assembly Service

We have YAMAHA YSM10 SMT machine, X-RAY Testing machine .

We always take customer’s requirements as our first job.your inquiry will be replied within 24 hours.                               

The PCBA products can be produced by 12 SMT lines, 2 DIP lines, 2 hand soldering lines, 2 assembly lines, 2 testing lines.

First, the printed circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, filling, electrical boundaries, etc. The main functions of each component are as follows:

Pad: metal hole for soldering component pins.

Vias: metal holes used to connect component pins between layers.

Mounting hole: used to fix the printed circuit board.

Wire: Copper film used to connect the electrical network of component pins.

Connector: Components used for connection between circuit boards.

Filling: The copper used for the ground wire network can effectively reduce the impedance.

Electrical boundary: used to determine the size of the circuit board, all components on the circuit board must not exceed this boundary.  

Second, the common layer structure of printed circuit boards includes single layer PCB (Single Layer PCB), double layer PCB (Double Layer PCB) and multi-layer PCB (Multi Layer PCB), these three layer structure brief description as follows:

(1) Single-layer board: a circuit board with copper on only one side and no copper on the other side. The components are usually placed on the side without copper, and the copper side is mainly used for wiring and soldering.

(2) Double-layer board: a circuit board with copper on both sides, usually called one side as the top layer and the other side as the bottom layer. Generally, the top layer is used as the component placement surface, and the bottom layer is used as the component welding surface.

(3) Multi-layer board: a circuit board that contains multiple working layers. In addition to the top and bottom layers, it also contains several intermediate layers. Generally, the intermediate layer can be used as a wire layer, a signal layer, a power layer, and a ground layer. The layers are insulated from each other, and the connection between layers is usually achieved through vias.

————————————————

Copyright statement: This article is an original article of CSDN blogger "Fanyi Education", which follows the CC 4.0 BY-SA copyright agreement. For reprint, please attach the original source link and this statement.

Original link: https://blog.csdn.net/weixin_43044164/java/article/details/98733977

2.About us

BQC leverages its competitive advantages in scale procurement and quality control to ensure the quality of raw materials and stable supply, and to transfer benefits to customers. Long-term maintenance of IC, resistors, capacitors, inductors, two transistors and other components of the procurement advantages, can greatly save customers' inventory costs, improve production turnover efficiency and save time. Currently providing PCBA processing services to customers in the United States, the United Kingdom, Japan, France, Canada, Australia, Sweden and other countries.

3.Supply chain management

Procurement policy

Standard part mass order,like IC,will only use authorized agents from original manufacturer’s official website

http://www.nxp.com/cn/about/about-nxp/worldwide-locations/worldwide-sales-offices/distributor-network:DISTRIBUTORS#CHINA

http://www.ti.com.cn/general/cn/docs/gencontent.tsp?contentId=24957

Standard part low volume or rush order:digikey,element14

Unique part like PCB,will choose top 10 suppliers in shenzhen,like shenzhen suntak circuit technology Co., Ltd and Tean Electronic,etc.

Compare price from 8 suppliers,to make sure get reasonal best price.

Use alternative parts after customer’s approval, and on the premise that no compromise of quality

4.Components Quality Control 

Components inspection 

Sample stage: When there is new part,product engineer will strictly inspect every part according to component datasheet.

Mass order procurement:IQC inspection according MIL-STD-105E sampling inspection class II standard 

Materials inspection equipments:LCR TESTER,Electrolytic capacitor leakage current tester,Transistor characteristic graph tester,Transistor tester.

4.Art Craft Capacity 

SMT + DIP soldering + Package                                                                                

SMT：Reflow soldering

1. Chip:01005

2. BGA ball

Spacing>=0.25mm

3. BGA ball diameter>=0.1mm

4. IC pin pitch>=0.2mm

DIP + soldering:Wave soldering

1. Through hole wave soldering

2. Selective wave soldering

3. Free-clean,Ultrasonic clean

4. Hand soldering

Package:Hand work

1. Plastic/metal box building

2. Safety package

Exhibition:

Since 2015 ,we started to attend many Exhibitions like HK Electronic Fair both Spring and Autumn , Munich Electronic Fair and CES, IPC.

Our Market:

Certification:

FAQ:

1. Q1:What service do you have?     

BQC:We provide turnkey solution including SMT/DIP, components sourcing, final products assembly

2.What’s our PCBA manufacturing productivity 

3. Work shop

Trade terms

1. Payment terms: L/C, T/T, Western Union

2. MOQ: 1pcs

Rich production experience, strict scientific management, so that our PCB Assembly Contract Manufacturing for RoHS Complaint and PCBA for Full Turnkey Services get inspection certificate. Our qualify products have good reputation from the world as its most competive price and our most advantage of after-sale service to the clients. In the fierce market competition, our company adheres to the tenet of high-quality products, reasonable prices and good service, and has reached strategic cooperation with many well-known enterprises. Our products are widely used in many industries.