PCB manufacturing capabilities — from prototype to production

1. Board layer counts and constructions

At Tate Circuits, we offer a comprehensive range of PCB stack-up options to meet the technical and commercial needs of projects across every industry — from early-stage prototypes to full-scale production. Our board construction capabilities include:

• Single-sided and double-sided PCBs for simple designs and cost-effective applications

• Multilayer PCBs up to 36 layers, supporting complex signal routing, power distribution, and impedance control

• Flexible and flex-rigid PCBs for compact designs, dynamic movement, and space-constrained enclosures

• Metal-backed and aluminium core boards for high-power and heat-sensitive applications, including LED lighting and power conversion

Whether you need a basic 2-layer board or a custom 20+ layer multilayer PCB, we work closely with your design team to ensure correct stack-up, material selection, and copper balance. Our expertise as a multilayer PCB manufacturer, flex-rigid PCB supplier, and aluminium PCB production partner means we’re well-equipped to handle diverse technical challenges — with fast lead times and consistent quality.

2. Dimensions and tolerances

Tate Circuits manufactures PCBs to exacting standards, offering a wide range of board sizes, thicknesses, and copper weights to suit both simple and complex applications. Whether you’re producing compact sensor boards or large-format multilayer PCBs, our dimensional flexibility and tight tolerances ensure precision and consistency at every stage.

Our standard manufacturing specifications include:

• Minimum board size:
  – 2.5 × 2.5 mm (requires panelisation)
  – 10 × 10 mm (can be supplied as individual boards)

• Maximum board size:
  – 500 × 1500 mm — ideal for large-format panels and high-power applications

• Board thickness range:
  – From ultra-thin 0.2 mm up to 8.0 mm, depending on layer count and copper weight

• Thickness tolerance:
  – ±0.10 mm for boards ≤1.0 mm
  – ±10% for boards >1.0 mm

• Maximum finished copper weight:
  – Up to 18oz, suitable for heavy copper PCBs requiring increased current handling or heat dissipation.

4. minimum trace width/space

As a leading UK PCB manufacturer, Tate Circuits is equipped to deliver exceptional accuracy on both standard and fine trace PCB manufacturing — even at high copper weights. Whether you’re developing compact multilayer PCBs or boards requiring robust current-carrying capability, our factory’s advanced imaging and etching technology enables tight trace spacing and high-density interconnects across a wide copper range.

Our production team in Shenzhen manufactures to precise specifications, while our UK-based technical engineers ensure your designs are fully manufacturable and compliant with your end-use requirements. We support the needs of sectors such as industrial electronics, automotive, LED lighting, medical devices, and more — where trace width tolerances and copper thicknesses directly impact performance.

Below is a breakdown of our trace width/spacing capabilities by copper weight, for both inner and outer PCB layers:

📐 Inner Layer (Finished Copper):

• 1/2 oz (18μm): 2.5 / 2.5 mil

• 1 oz (35μm): 3 / 3 mil

• 2 oz (70μm): 4 / 5 mil

• 3 oz (105μm): 6.5 / 6.5 mil

• 4 oz (140μm): 8 / 8 mil

• 5 oz (175μm): 10 / 10 mil

• 6 oz (210μm): 12 / 12 mil

🧷 Outer Layer (Finished Copper):

• 1 oz (35μm): 4 / 4 mil

• Up to 6 oz (210μm): Max 15 / 15 mil

These specifications enable reliable signal routing, current handling, and layer-to-layer consistency, especially in multilayer designs and power-dense PCBs. Whether you’re sourcing heavy copper PCBs for power electronics or fine-line boards for miniaturised assemblies, we maintain the precision needed to avoid signal loss, impedance variation, or thermal imbalance.

Looking for guidance on your trace layout or current-carrying capacity? Our team is here to help. We combine 50+ years of PCB manufacturing experience with engineering insight — helping you avoid costly mistakes and get your boards right the first time.

🔵 Request engineering advice or a trace design review

5. Copper layer detailing and design rules

As a trusted UK PCB manufacturer supporting projects across sectors like automotive, industrial electronics, lighting, medical, and security, we understand how critical precise copper layer design is to the functionality and durability of your circuit board. Whether you’re developing high-speed multilayer boards, BGA layout PCBs, or components requiring fine-pitch IC bonding, Tate Circuits delivers outstanding precision and manufacturability.

Our advanced PCB manufacturing processes support tight tolerances and optimal copper clearances, even at high layer counts and copper weights. All boards are fabricated at our ISO and UL-certified Shenzhen factory, with full UK-based technical oversight throughout — ensuring you get production-ready PCBs that meet your exact specifications.

Here are our standard copper layer capabilities and design rules:

🧿 Via & BGA Design Tolerances:

• Minimum copper ring for via (inner/outer layers): 4 mil

• Minimum BGA pad size: 8 mil

• Minimum BGA trace width / spacing: 2.5 mil

• Minimum BGA trace-to-pad spacing: 2.5 mil

• Minimum BGA pad for HASL: 10 mil
• Minimum BGA pad on copper plane area for HASL: 12 mil

• Minimum IC bonding pad width/space:
   – 3/3 mil for gold-plated
   – 4/4 mil for ENIG finish

• Minimum space between copper planes: 6 mil

• Coil trace widths:
   – 1 oz copper: 4 / 4 mil
   – 2 oz copper: 8 / 8 mil
   – 3 oz copper: 12 / 12 mil

🧲 Drill-to-Copper Clearance (by layer count):

• 4–6 layers: 4 mil

• 8–12 layers: 5 mil

• 14–16 layers: 6 mil

• 18–22 layers: 7 mil

• 24–28 layers: 8 mil

• 30+ layers: 10 mil

Whether you’re creating a high-density interconnect, a board with extensive copper pours, or a design that pushes the limits of miniaturisation, our experienced team will review your stack-up and layout to ensure manufacturability without compromise. If needed, we’ll recommend slight adjustments to improve yield or reduce production costs — while maintaining full performance and reliability.

🟢 Send us your layout for copper clearance review

7. PCB surface finishing technology — protecting reliability and performance

The final surface finish is a critical stage in the PCB manufacturing process, directly impacting solderability, shelf life, and overall board performance. At Tate Circuits, we offer a comprehensive range of surface finish technologies to meet the demands of industries including automotive, medical, LED lighting, and industrial control.

As a trusted UK PCB supplier with production based in our ISO-certified Shenzhen facility, we guide you in choosing the most appropriate finish for your design, application, and assembly process — ensuring the best outcome for every project.

🌍 Our available PCB surface finishes include:

• OSP (Organic Solderability Preservative): A lead-free, RoHS-compliant finish ideal for flat surfaces and cost-effective SMT assembly.

• Lead-Free HASL (Hot Air Solder Leveling): Robust, durable finish for through-hole and mixed-technology assembly.

• Immersion Tin / Immersion Silver: Flat, solderable finishes for high-reliability circuits and fine-pitch components.

• ENIG (Electroless Nickel Immersion Gold): A highly stable, oxidation-resistant surface finish — excellent for SMT and BGA applications.

• ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold): Superior for high-frequency and wire-bonding applications.

• Hard Gold Plating: Long-wearing finish for edge connectors and key contact points.

• Nickel-Less Gold Plating: Selective finish for applications requiring low-profile, high-conductivity connections.

• Selective Gold (Gold Fingers): Perfect for connectors and high-wear edge contacts.

• Mixed Finishes: Including ENIG + OSP, HASL + Hard Gold, or custom combinations to suit dual-assembly processes.

Each finish is applied with precision at our PCB production factory in China, with UK-based technical support available to help you decide on the most cost-effective and performance-driven option for your product.

Whether you’re manufacturing fine-pitch BGA boards or high-reliability connectors, we ensure all PCB surface finishes meet IPC standards, are fully RoHS compliant, and support modern lead-free soldering.

✅ Looking for advice on which finish to choose?
🟢 Request a surface finish recommendation or quote

8. Outline tolerances and shaping — precision-cut PCB profiles for every project

Accurate board outlines and precision-cut features are critical to the performance, assembly, and fit of your final product. As a leading UK PCB manufacturer with over 50 years of industry experience, Tate Circuits ensures your PCB outlines, milling profiles, and V-CUTs are engineered with exceptional precision.

At our ISO-certified Shenzhen factory, we use high-speed CNC routers, scoring machines, and V-groove tools to deliver exact shaping tolerances — all while our UK-based team provides clear communication and design advice to ensure manufacturability from the start.

Whether you need simple rectangular profiles or complex routed edges for panelisation, we guarantee tight tolerances and consistent results, making us a preferred PCB supplier for UK electronics manufacturers and global OEMs alike.

⚙️ Our PCB outline and V-CUT capabilities include:

• Outline dimension tolerance:
  ±0.13 mm (standard), ±0.10 mm (minimum) — ideal for tight-fitting enclosure designs.

• Minimum copper-to-edge spacing:
  0.20 mm (outer layers), 0.25 mm (inner layers) — ensuring protection against copper exposure during milling.

• Edge connector beveling clearance:
  Minimum 0.15 mm spacing between plated fingers and bevel to avoid damage during assembly.

• V-CUT angles available:
  20°, 30°, and 45° to suit different panelisation and breakaway needs.

• V-CUT thickness compatibility:
  From 0.4 mm to 3.2 mm total board thickness.

• V-CUT web tolerance:
  ±0.10 mm — consistent scoring for clean separation with structural stability.

• Jump V-CUT clearance:
  Minimum 8 mm safe space required on boards ≤1.6 mm thick.

All PCB outlines, routed slots, and V-CUTs are reviewed during our UK-based engineering checks at the quotation stage — helping you avoid manufacturability issues and costly design revisions.

Whether you’re producing multilayer PCBs, metal-backed boards, or panelised batches, Tate Circuits ensures your finished boards are dimensionally accurate, reliably delivered, and ready for integration.

✅ Want to confirm your outline and scoring tolerances?
🟢 Speak to our technical team or request a capability review

10. Silkscreen options and traceability — precision markings for every PCB

Clear silkscreen printing is essential for identifying components, improving assembly accuracy, and ensuring quality control across every production batch. As a trusted UK PCB manufacturer, Tate Circuits offers high-quality silkscreen options that combine legibility, durability, and full traceability — all tailored to your design.

Whether you’re producing prototype PCBs or high-volume multilayer boards, our PCB manufacturing process applies silkscreen with precise alignment, consistent ink coverage, and excellent resistance to handling and heat during assembly.

🧴 Silkscreen ink brands

We use premium, industry-standard inks to ensure clarity and durability:

• KSM-388 – Available in white and black

• Taiyo S-380W – High-opacity white for maximum contrast

• ATA-5000 – A reliable yellow silkscreen option for darker soldermasks

Each brand is chosen for high adhesion to a variety of soldermask types, ensuring your markings won’t fade, flake, or smear — even on complex or high-density boards.

🎯 Silkscreen colour options

Our PCB printing service supports the following silkscreen colours:

• White (most common and high contrast)

• Yellow (ideal for black soldermask)

• Black (used on white or light-coloured soldermasks)

These options are especially useful when producing boards for the automotive, industrial, or consumer electronics industries where component identification is vital.

🔍 Advanced traceability features

To support your PCB traceability requirements, we offer:

• Serial numbers

• Barcodes

• QR codes (available in white ink only)

These can be placed strategically on your board for batch tracking, warranty purposes, or integration into automated assembly systems — helping streamline production and reduce errors.

At Tate Circuits, we understand that small details matter. That’s why every silkscreen layer is reviewed by our UK-based engineering team before production begins — ensuring your layout prints clearly and cleanly, exactly as intended.

✅ Want to add traceability to your next production run?
🟢 Request a quote or speak to our UK team today

11. Carbon capabilities — reliable carbon ink printing for contact applications

At Tate Circuits, we offer carbon ink printing for customers requiring durable, conductive carbon layers — ideal for applications such as keypads, contact pads, resistors, and switch points. This specialist process is carried out with high accuracy to ensure functional, reliable carbon contacts that meet your design needs.

As a leading UK PCB manufacturer, we combine advanced carbon PCB production capabilities with tight manufacturing tolerances and UK-based project oversight.

🖤 Carbon ink specification

We use trusted, high-performance carbon inks for consistent conductivity and excellent adhesion to the PCB substrate:

• Brand: CCI303 – widely used in industrial and consumer electronics

• Carbon thickness: 10–50 µm – adaptable to your functional requirements

• Minimum spacing between carbon patterns: 12 mil

• Minimum carbon trace width: 16 mil

These tolerances ensure your carbon pads perform reliably during repeated use, especially in membrane switches, keyboard layers, and wearable electronics.

💡 Why choose carbon printing?

Carbon is a cost-effective alternative to precious metal finishes when conductivity and mechanical resistance are needed in low-current applications. Our carbon printing process integrates seamlessly into your overall PCB production, making it ideal for:

• Remote controls

• Tactile switch interfaces

• Low-cost resistor networks

• Wear-resistant contacts

With over 50 years of PCB manufacturing experience, our UK-based engineering team can advise on the optimal use of carbon in your design. From carbon PCB prototypes to high-volume production runs, we offer technical input, fast turnaround, and end-to-end support.

✅ Need carbon pads for your next PCB design?
🟢 Get a tailored quote from our UK team

13. PCB design file formats supported

Tate Circuits supports a wide range of industry-standard data formats, making it simple for engineers, designers, and manufacturers to submit their PCB layouts. Whether you’re working in Gerber, ODB++, or proprietary CAD software, we can convert and verify your data to ensure smooth, error-free production.

As a trusted UK PCB supplier with over 50 years in the industry, we’ve built robust systems to ensure accuracy and consistency from file upload to final delivery. All files are reviewed by our UK-based engineering team before production begins, helping you avoid costly errors and delays.

📁 Supported PCB file formats

We accept all major PCB layout formats, including:

• Gerber 274D

• Gerber 274X

• ODB++

• CAM350

• PADS

• DXF

• HPGL

• Barco DPF

Our team can also work with composite manufacturing packages, including schematic files, drill files, and assembly drawings — streamlining your order process and ensuring precision manufacturing.

Need help preparing your files?
✅ Send us your design package and our UK PCB manufacturing experts will review and quote promptly.
🔵 Request file review and quote

14. International standards we meet

At Tate Circuits, our commitment to quality, safety, and environmental responsibility is backed by globally recognised certifications. As a long-established UK PCB manufacturer, we ensure that every board we supply meets stringent industry and environmental standards — whether you’re sourcing a one-off prototype or high-volume production.

We partner with a quality-driven PCB manufacturer in Shenzhen, and all production is closely monitored and project-managed by our UK-based team, giving you full peace of mind.

See our production process in action in our PCB factory video.

📋 Our PCB manufacturing certifications:

• ISO 9001:2015
  Certified quality management system for consistent production standards

• UL Approved
  Safety-certified printed circuit boards, compliant with US standards

• RoHS and REACH Compliant
  Environmentally responsible PCBs with full lead-free and hazardous substance compliance across the EU and UK

As a trusted UK PCB supplier, we combine ISO-certified production in China with local customer service, engineering support, and fast communication from our UK headquarters.

Need documentation for your project or to meet specific compliance requirements?
🔵 Request compliance certificates