The Importance of High-Quality Soldering Materials in PCBA Component Attachment

When attaching components to a PCB, using high-quality solder is crucial for effective soldering. However, post-soldering, residues can form on the board surface, impacting both appearance and electrical performance.

Proper Cleaning Procedures for PCBA Components

It is essential to utilize a plate washer for thorough surface cleaning of PCBA components. Providing proper guidance and protective measures to staff ensures meeting customer requirements, reducing complaints, and preventing injuries.

PCBA Cleaning Operations:

• Utilize washing stations for maintenance cleaning.

Preparation Before Operation:

• Arrive early for shift meetings and self-inspection.
• Complete handover records and address identified issues.
• Wear protective gear like masks, gloves, and static rings.

Operation Process and Methods:

• Manual + Brush Cleaning Method:
  • Scrub PCB with an anti-static brush dipped in washing water to remove tin slag and flux.
  • Check for residues, wipe if necessary, and place the PCB on an electrostatic plate.
  • Perform “5S” tasks at the workstation after completion.
• Brush Washer Cleaning Method:
  • Immerse the plate in washer water, then brush to clean thoroughly.
  • Cover the washer water to reduce volatilization after use.

Precautions for Plate Washing:

• Avoid washing sensitive components like speakers, sensors, and connectors to prevent damage.
• Be cautious with electrolytic capacitors and communication modules to avoid removing surface markings.
• Regularly clean the anti-static brush and inspect soldering positions for residues.
• Ensure barcode and silk screen integrity post-cleaning to identify defective products.
• Plate washing water is flammable and corrosive; wear protective gear and prioritize safety.