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HDI PCB Manufacturing Services
Topfast specializes in manufacturing high-density interconnect (HDI) PCBs with precision-engineered solutions, including blind vias, buried vias, microvias, and sequential lamination.
Leveraging cutting-edge production processes, we deliver superior performance, exceptional reliability, and compact designs tailored to meet the most demanding electronic applications.
- Ultra-high density wiring
Utilizes laser microvia and blind/buried via technology
- Advanced manufacturing processes
High-precision laser drilling, sequential lamination, ultra-thin dielectric materials
- High reliability and stability
Strict quality control, high TG materials (Tg ≥ 170°C)
- Fast delivery & cost optimization
Rapid prototyping for small to medium batches, cost reduction through large-scale production
Why Choose HDI PCBs?
High-Density Interconnect technology for advanced electronic applications
- High Wiring Density
Utilizes microvia and blind/buried via technology to achieve a more refined circuit layout with increased component density.
- Multi-layer Stacking
Employs any-layer HDI or sequential lamination technology to improve signal transmission efficiency and reduce interference.
- Compact & Lightweight
Ideal for space-constrained devices including smartphones, tablets, and wearable technology.
- High-Frequency Performance
Optimized signal integrity for demanding applications like 5G communication and high-end server infrastructure.
HDI PCB Material Selection
In high-density interconnect (HDI) PCB design, material selection directly impacts signal integrity, thermal reliability, and long-term stability. Topfast combines industry standards with customer requirements to optimize material solutions, ensuring HDI PCBs deliver exceptional performance in high-speed, high-frequency, and demanding environments.
Decomposition Temperature (Td)
Critical Requirement: Td ≥ 320°C
Maintains stability during reflow soldering (250-300°C)
Topfast Solutions:
- Rogers RO4000 series (Td > 350°C)
- Isola 370HR (Td = 340°C)
- Military-grade ceramic-filled materials
Dielectric Constant (Dk)
Critical Requirement: Dk < 3.5
Reduces signal delay for 5G/mmWave applications
Topfast Solutions:
- Rogers RO4350B (Dk 3.48 @1GHz)
- Nelco N4000-13 (Dk 3.38)
- Isola I-Tera MT40 (Dk 3.45)
Glass Transition Temp (Tg)
Critical Requirement: Tg ≥ 170°C
Prevents board deformation in multilayer stacks
Topfast Solutions:
- High Tg FR4 (Tg 170-180°C)
- Ultra-high performance materials (Tg > 200°C)
- Rogers RT/duroid 5880
Dissipation Factor (Df)
Critical Requirement: Df < 0.005 @1GHz
Minimizes signal loss in high-speed applications
Topfast Solutions:
- Rogers RO3003 (Df 0.0013)
- DuPont Pyralux AP (Df 0.002)
- Panasonic Megtron 7 (Df 0.001)
Thermal Expansion (CTE)
Critical Requirement: Z-axis CTE < 50 ppm/°C
Prevents solder joint failure in thermal cycles
Topfast Solutions:
- BT resin substrates (CTE ≈ 15 ppm/°C)
- Ceramic-filled PTFE
- Rogers TMM® series
Copper Foil & Surface Finish
Critical Requirement: ≤12μm ultra-thin copper
Enables fine-line circuitry and reduces signal loss
Topfast Solutions:
- Ultra-thin copper foil (9-12μm)
- RTF/VLP copper technology
- mSAP (modified semi-additive process)