PCBA Tech - Introduction to the job responsibilities of SMT positions

1. Job responsibilities of SMT production supervisor:

1.1 Responsible for the reasonable adjustment of the production plan to achieve the planned requirements according to the plan requirements of the production plan and the supply of materials.

1.2 Responsible for inter-departmental coordination, solve production obstacles, and ensure the smooth progress of production.

1.3 Responsible for the planning and implementation of SMT production management related documents, responsible for personnel arrangements in the production process, and on-site coordination of various production process problems.

1.4 Responsible for the control of product quality, production progress, production materials, production efficiency, etc., and report to the production manager in a timely manner.

1.5 Responsible for the statistics of daily production efficiency and working hours loss of SMT, statistics, analysis and improvement countermeasures of monthly production material loss and poor incoming materials.

1.6 Responsible for monthly assessment of production technicians and operators, and work arrangement for SMT workshop.

2. Job responsibilities of SMT material staff:

2.1 Responsible for SMT production materials requisition, inventory, ledger registration, replenishment, inventory, weekly loss quantity and amount statistics, and material control department tracking the material arrival.

2.2 Responsible for the preparation of the material supply of the production site transfer order and the follow-up work of the product quantity and material clearance at the time of the statement.

2.3 Responsible for the handling of the product mantissa and the distribution of the product.

2.4 Responsible for the inventory and purchase of production accessories. (Production accessories category-material application process)

3. Job responsibilities of SMT production technicians:

1 Responsible for on-site records, 5S, work implementation supervision and inspection of production operators.

2 Responsible for the replacement and debugging of production equipment, the evaluation of equipment failures and the search for solutions, the reasonable arrangement of SMT production plans, the analysis and improvement of production defective products, the control and cause analysis and improvement of machine throwing.

3 Responsible for the printing of serial number, the acceptance of steel mesh, the temperature test of the reflow oven, the confirmation of the daily spot inspection of the equipment and the weekly maintenance.

4 Responsible for the monthly assessment of operators, staff attendance, and operator training.

4. SMT engineer's job responsibilities:

4.1 Responsible for the safety management of SMT equipment, the production of SMT equipment operation instructions, the registration of SMT fixed assets, the establishment of SMT equipment resume cards, and the acceptance of new equipment.

4.2 Responsible for SMT equipment fault maintenance and analysis, monthly and annual maintenance, equipment consumption auxiliary materials, purchase and replacement of maintenance oil.

4.3 Responsible for the program programming of the placement machine/AOI new product, the summary of the new product, the management of the BOM and the update and maintenance of the placement machine program.

4.4 Responsible for the production of SMT production process documents, production process technology management, and ensure the safety and reliability of various technical tasks. Coordinate with the engineering department to solve technical problems, solve and analyze difficult production process problems, and train technicians.

SMT job responsibilities

SMT job responsibilities

5. Job responsibilities of printer

5.1 Check whether the air pressure is 4~6kgf/cm2, if not, please adjust it back to the specified value.

5.2 The glue or solder paste must be thawed 4H in advance to restore it to 20-25 degrees

5.3 Select the stencil according to the PCB P/N, install it on the printing table to adjust the stencil, confirm that the stencil hole is completely aligned with the PCB pad, if not, adjust the alignment used by the screen printing table

5.4. Take an appropriate amount of red glue or solder paste and place it on the screen for printing; start printing.

5.5 When the printing is finished, take the printed PCB to check whether there is any deviation, less tin, short circuit, etc.; if any, clean the PCB board. It can flow into the next process until OK.

5.6 When the production is completed, click on the "Stop" touch screen to return to the main interface.

5.7 Turn off the power and switch on the air source.

6. Operator's job responsibilities

6.1 5S of the machine and its surroundings

6.2 Mounter operation, material preparation and material replacement

6.3 The first PCB board produced by the trial production model must be tracked from the first machine to the end of the last machine, and it is necessary to check whether it has reverse polarity/wrong parts/offset/flying materials. There is a problem. Make adjustments and confirm that it is OK and then mass production.

6.4 There is a problem with the machine or some quality problems raised by the visual inspection staff will be solved immediately. If it can't be solved in a short time of 10 minutes, please report to the team leader or technician for help.

6.5 After the production of a model statement, the materials are unloaded. When unloading, pay special attention to take a box and put all the materials of a machine in it and return the materials to the warehouse after finishing.

6.6 When the machine throws materials during the production process, be sure to check its A: vacuum value B: whether the suction nozzle is blocked or not C: whether the coordinates are offset, etc.

6.7 In the production process, what needs to be changed or needs to be modified by ECN must be marked and distinguished after implementation or change, and the visual inspection personnel must be notified of what to pay attention to and how to separate.

6.8 Make a production report, and the daily production quantity and cumulative quantity must be checked clearly and without error.

6.9 The bulk materials of the day must be consumed on the same day (the operator must pour out the bulk materials and pick them out and put them on hand every day when changing planes or when off work, and try to put the materials thrown away on duty for the workers on duty). The operators should pay attention to the IC/customer The material supply/transistor/diode must not be lost, and you must be careful about the loss when loading and unloading.

6.10 During the production process, all materials on the machine should be checked again according to the display on the machine every 4H. Ensure that the produced PCB boards have no quality problems.

7. QC work responsibilities in front of the furnace

7.1 Put the semi-finished PCB after machine mounting on the workbench, and confirm all the parts mounted by the machine. And judge according to the "Printed Circuit Board Assembly Inspection Standard", and use it when the inspection finds that there is part deviation or standing up. Pull it up carefully with tweezers. When the part is completely deviated from the pad or the diode is overturned, it cannot be pulled out, and it should be repaired by a repairman (use a universal meter to check the OK and then mount it).

7.2 Put the mounted PCB on the workbench or track. At the same time, confirm whether there is a shortage of products, too many hits, mismatches, reverse polarity, etc. (the first board will be sent for the first piece).

7.3 Place the parts to be hand-applied neatly and orderly on the work surface. According to the "SMT Common Visual Inspection Standards", hand-apply each part. Parts without polarity are placed on the center of the corresponding PCB pad in the vertical direction . For parts with polarity (IC, power strips, diodes, transistors, etc.), first confirm the direction, and then align the corresponding wiring pins to install the parts in the vertical direction. Phenomena such as missing paste, offset, glue overflow and mismatch. After the hand-applied parts are OK, put them into the good substrate box and wait for the next project