Will The Wrong Design Of Silkscreen Bit Number Affect The PCBA Patch Processing?

When we do PCB design, pay great attention to the direction of the bit number and the corresponding order, worrying about the bit number screen printing direction reversed or screen printing is not placed correctly, affecting the placement error.

Then the screen printing bit number cross or screen printing bit number order reversed exactly how much impact on the placement?

Grande PCBA

First of all, it can be clearly said that the silkscreen bit number can not determine whether the final patch is correct. Many experienced engineers have found that many experienced engineers have found that removing the bit number silkscreen, PCBA product placement back and there is nothing wrong with it. Generally speaking, machine placement is to first find the device, and then the found device is placed in the correct location on the PCB, which involves simple programming, including two points.


1.Pickup program is to tell the machine where to pick up, pick up what components, with what packaging components and other pickup information. The content includes: the component name of each step, the offset of X,Y and angle t of each step, the type of feeder, the pickup height, the drop position, whether to skip, etc.


2.The placement program is to tell the machine where to paste the components, the angle of the placement, the height of the placement and other information. It includes: the component name and description of each step, the X and Y coordinates and angle t of each step, whether the height of the patch needs to be corrected, the number of patch heads, whether the patch time is simultaneous, whether the step is skipped, etc. The patching procedure also includes information about the X and Y coordinates of the PCB and local markers, etc.


This shows that the machine patch will not find the silkscreen bit number on your PCB at all, but work according to the programming program, and the most important file for programming is the exact coordinate file, so we can understand why you do not need the bit number map, but must need the coordinate file.




Grande specializes in providing overall PCBA electronic manufacturing services, including PCB design, upstream electronic components procurement to PCB production and processing, SMT placement, DIP plug-in, PCBA testing, finished product assembly and other one-stop services.

The company gives full play to its competitive advantages in scale procurement and quality control, and has signed long-term cooperation agreements with many domestic and global electronic component manufacturers to ensure the quality and stable supply of raw material sources and transfer the benefits to customers.

Long-term procurement advantages in IC, resistors, capacitors, inductors, diodes and other components can greatly save customers’ inventory costs, improve production turnaround efficiency and save time. At present, we provide PCBA processing services for customers in USA, UK, Japan, Russia, France, Canada, Australia, Romania, Switzerland and other countries and regions.

We provide PCBA processing services, starting from PCB board fabrication, our own PCB manufacturer (with extremely strict TS16949 certification for the automotive industry), focusing on the quality of the board and PCBA quality control system.

Due to decades of experience in procurement of electronic components, we maintain long term cooperation with large brands to ensure the original packaging of components and procurement channels. In the encapsulation process of components, we choose Senju and Loctite solder paste to ensure the reliability of the soldering, with automatic printing machine, Panasonic high-speed placement machine, upper and lower eight temperature zone reflow soldering, AOI automatic optical detector, etc., which can effectively ensure the reliability and quality of the electronic packaging process.

In addition, the perfect management process of IPC, IPQC, OQA, etc., with clear job responsibilities and strict implementation of IPC electronic assembly acceptance standards. Regarding PCBA testing, we have professional engineers to perform 100% batch testing using various test stands, including pathway, noise, amplitude, signal, temperature, humidity, drop or execute customer’s detailed test program. All efforts aim to be a fine PCBA processing manufacturer.