CHANZON Prototype PCB Board Kit User Manual

1. Introduction

Thank you for choosing the CHANZON Prototype PCB Board Kit. This kit provides a versatile set of double-sided, pre-tinned FR4 universal perfboards designed for prototyping, testing, and educational demonstrations of electronic circuits. These boards are ideal for constructing permanent or semi-permanent circuit prototypes via soldering. This manual provides essential information for safe and effective use of your PCB kit.

2. Safety Information & Warnings

Please read all safety warnings carefully before using this product to prevent injury or damage.

2.1. General Safety Precautions

• Always work in a clean, dry, well-lit, and well-ventilated area.
• Discharge static electricity from your body (e.g., by touching a grounded metal object) before handling components, especially electrostatic-sensitive ones.
• Keep the work area clear of flammable materials.
• This product is not suitable for children under 14 years of age due to small parts and inherent hazards of circuit assembly and soldering. Adult supervision and guidance from a qualified instructor are required.

2.2. Electrical Safety Warning

Circuits assembled using these boards may contain hazardous voltages and currents. Incorrect design or wiring can lead to short circuits, overheating, fire, or electric shock.

• Thoroughly verify all connections before applying power to any assembled circuit.
• Initial testing is recommended using a low-voltage DC power supply with current limiting enabled.

2.3. High-Temperature and Burn Warning

Soldering involves high temperatures. The soldering iron tip, molten solder, and freshly soldered PCBs can reach extremely high temperatures capable of causing severe skin burns.

• Always place the soldering iron in its designated stand during use.
• Wear an anti-static wrist strap (when properly grounded) to protect sensitive components.
• Allow solder joints and the PCB to cool completely before handling or touching.

2.4. Mechanical Processing and Health Warning

Cutting, grinding, or milling copper-clad boards generates sharp fiberglass fragments and fine copper dust, which can be hazardous if inhaled or come into contact with skin/eyes.

• Always wear safety goggles and an N95-rated (or higher) dust mask when performing these operations.
• Perform such operations only in a well-ventilated area equipped with local exhaust ventilation or dust collection systems.
• Dispose of waste materials appropriately and safely.

3. Product Overview & Components

This kit includes a variety of double-sided, FR4 grade prototype circuit boards with pre-tinned, plated through-holes. The holes are electrically isolated, not stripboard, providing flexibility for circuit design. Each board features corner mounting holes for easy integration into projects.

Figure 1: CHANZON Prototype PCB Board Kit

Figure 2: Key Features of the Prototype PCB Boards

3.1. Kit Contents (34 Pieces Total)

• 8 pieces: 2x8 cm (0.79 x 3.15 inches)
• 8 pieces: 3x7 cm (1.18 x 2.76 inches)
• 8 pieces: 4x6 cm (1.57 x 2.36 inches)
• 8 pieces: 5x7 cm (1.97 x 2.76 inches)
• 2 pieces: 7x9 cm (2.76 x 3.54 inches)

Figure 3: PCB Board Sizes and Quantities

4. Setup & Preparation

4.1. Workspace Setup

• Ensure your workbench is clean, dry, well-lit, and well-ventilated.
• Gather all necessary tools: soldering iron, solder, desoldering wick/pump, wire cutters, wire strippers, safety glasses, N95 mask, anti-static wrist strap, isopropyl alcohol, and a soft brush.

4.2. Board Inspection

• Before use, inspect each PCB for any physical damage or manufacturing defects.
• Familiarize yourself with the hole pattern and spacing for your intended circuit design.

5. Operating Instructions

5.1. Soldering Components

These perfboards are designed for through-hole components. The pre-tinned pads facilitate easy soldering.

1. Component Placement: Insert components into the desired holes. Bend leads slightly on the underside of the board to hold them in place (mechanical fixation first).
2. Soldering Iron Temperature: Use a temperature-controlled soldering iron, typically set between 300-350°C (572-662°F).
3. Soldering Technique: Apply the soldering iron tip to both the component lead and the PCB pad simultaneously. Feed a small amount of solder onto the joint. The solder should flow smoothly and create a shiny, cone-shaped joint.
4. Dwell Time: Limit the dwell time per solder joint to no more than 3 seconds to prevent pad delamination due to overheating.
5. Lead Trimming: After soldering, use flush cutters to trim excess component leads close to the solder joint.

5.2. Cutting/Milling Boards (If necessary)

If you need to alter the size or shape of the PCB, follow these guidelines:

1. Safety First: Always wear safety goggles and an N95-rated (or higher) dust mask.
2. Tools: Use professional tools such as hobby knives with a straight edge, PCB milling machines, or specialized PCB shears.
3. Ventilation: Perform cutting or milling operations in a well-ventilated area, ideally with local exhaust ventilation or a dust collection system.
4. Debris Collection: Properly collect and dispose of all copper debris and fiberglass fragments.

6. Maintenance & Cleaning

6.1. Post-Soldering Cleaning

After soldering, flux residue may remain on the board. This residue can be corrosive or conductive and should be removed.

• Use electronics-grade isopropyl alcohol (IPA) and a soft brush or lint-free cloth to gently clean the soldered areas.
• Ensure the board is completely dry before applying power.

6.2. Storage

• Store unused PCBs in a dry, dust-free environment, preferably in anti-static bags, to prevent oxidation of the tinned pads and contamination.

7. Troubleshooting

7.1. Common Soldering Issues

• Cold Solder Joint (Dull, Gray, Lumpy): Reheat the joint, apply a small amount of fresh solder, and ensure proper heat transfer to both the lead and pad.
• Solder Bridge (Solder connecting two adjacent pads/traces): Use desoldering wick or a desoldering pump to remove excess solder.
• Lifted Pad: This can occur from excessive heat or rework. If a pad lifts, you may need to carefully scrape away solder mask to expose a trace and bridge the connection with a wire, or use an alternative connection point.

7.2. Environmental Limitations

• These boards are not waterproof or heat-resistant structural components. Avoid prolonged use in humid, high-dust, or corrosive-gas environments.
• Do not expose boards to temperatures exceeding the FR-4 glass transition temperature (approximately 130°C / 266°F).
• These boards are not designed to be used as load-bearing structures or mechanical supports.

8. Specifications

Figure 4: Thickness Comparison (CHANZON FR-4 vs. FR-1)

9. User Tips

• Plan Your Layout: Before soldering, sketch out your circuit layout on paper or use a breadboard to test it. This helps optimize component placement and minimize wire jumpers.
• Use Component Leads: For short connections, you can often bend and trim component leads to bridge between adjacent holes, reducing the need for extra wires.
• Pre-tin Wires: When connecting wires to the perfboard, pre-tinning the wire ends with solder makes them easier to insert and solder securely.
• Check for Shorts: After soldering sections of your circuit, use a multimeter to check for any unintended short circuits between adjacent pads or traces before powering up.
• Utilize Both Sides: Since these are double-sided boards, you can use traces or components on both sides for more complex or compact designs.

10. Compliance & Regulations

This product series complies with applicable EU regulatory requirements and meets EU health, safety, and environmental protection legislation.

10.1. Applicable Regulations and Harmonized Standards

• RoHS Directive 2011/65/EU: Restriction of Hazardous Substances in Electrical and Electronic Equipment.
• REACH Regulation (EC) No 1907/2006: Registration, Evaluation, Authorisation and Restriction of Chemicals.

For detailed compliance information, please refer to the official product documentation available at User Manual (PDF).

11. Support & Contact

If you have any questions or require further assistance regarding your CHANZON Prototype PCB Board Kit, please contact your retailer or the manufacturer's customer support channel.