The PCB substrate material determines the electrical performance, mechanical strength, and thermal stability of the circuit board. Different materials are suitable for different applications:

• FR-4: Most commonly used fiberglass epoxy material, suitable for most electronic products
• Flex: Flexible PCB material, can be bent, suitable for space-limited scenarios
• Aluminum: Aluminum-based board with excellent heat dissipation performance, suitable for LED and power devices
• Rogers: High-frequency material, suitable for RF circuits and high-speed signal transmission

The number of layers refers to the layers of conductive copper foil on the PCB, affecting circuit complexity and performance:

• 1 Layer: Single-sided board, the most basic PCB type, suitable for simple circuits
• 2 Layers: Double-sided board, suitable for medium complexity circuits, the most common type
• 4 Layers: Four-layer board, suitable for complex circuits, provides better signal integrity
• 6-8 Layers: Multi-layer board, used for highly complex circuits, with excellent electromagnetic compatibility

More layers mean higher manufacturing difficulty and cost

Enter the physical dimensions of the PCB (length × width). Standard units are millimeters (mm), but you can also select centimeters (cm) or inches.

• Minimum size: 10mm × 10mm
• Maximum size: 500mm × 500mm

Contact customer support for special sizes

This is the number of individual circuit boards or panels you need.

For single board designs, this is the number of individual circuit boards. For panel designs, this is the number of panels. If you select "Panel by JLCPCB", this is also the number of panels.

Note:

1. Please select from the available quantities on the website; custom quantities (such as 3pcs or 8pcs) are not supported. If you need a quantity exceeding the maximum provided on the website, please contact our support team for assistance.
2. For orders exceeding 200 pieces, we recommend prototyping before starting small-batch production.

PCB thickness is the physical thickness of the entire circuit board, affecting mechanical strength and application scenarios:

• 0.4mm: Ultra-thin design, suitable for extremely space-limited applications
• 0.8mm: Thin design, suitable for mobile phones and portable devices
• 1.0mm: Medium thickness, balancing strength and lightweight
• 1.6mm: Standard thickness, most commonly used, suitable for most applications
• 2.0mm: Thicker design, providing higher mechanical strength

Thickness affects impedance control and thermal performance

Copper thickness refers to the thickness of copper foil on the outer layers of the PCB, measured in ounces (oz):

• 1oz (35μm): Standard thickness, suitable for most applications and signal lines
• 2oz (70μm): Thicker design, suitable for high current applications and power lines

Thicker copper foil can:

• Carry larger currents
• Reduce conductor resistance
• Improve heat dissipation

But increases etching difficulty and cost

PCB color refers to the color of the solder mask layer, mainly aesthetic and functional considerations:

• Green: Most traditional and common color, good contrast for inspection
• Red: Bright and eye-catching, commonly used for prototypes and test boards
• Blue: Professional appearance, reduces visual fatigue
• Yellow: High visibility, suitable for occasions requiring high visibility
• Black: Stylish and attractive, relatively good heat dissipation
• White: Good reflectivity, suitable for LED applications

Color does not affect electrical performance but may affect thermal performance

Surface finish affects pad solderability, contact performance, and service life:

• HASL (with lead): Hot Air Solder Leveling, low cost but moderate flatness
• Lead-Free HASL: Environmentally friendly version of hot air leveling, complies with RoHS standards
• ENIG: Electroless Nickel Immersion Gold, high surface flatness, long shelf life, suitable for fine-pitch components

Different surface treatments are suitable for different soldering processes and application scenarios

Choose the delivery form of the PCB:

• Single PCB: Each PCB is separated individually
• Panel by Customer: Manufactured according to the panel layout provided in your Gerber files

Panels are suitable for mass production, convenient for SMT assembly, but require subsequent depaneling.

For special panelization requirements, please indicate in the Gerber files