Topfast has years of experience making printed circuit boards (PCBs). We have the most common problems in creating PCBs. We can help you, no matter what your experience level is.
Q1: What file formats do you require for PCB manufacturing?
For Fabricación de PCB, we recommend providing Gerber RS-274X files, which are preferred. However, we also accept Protel design files.PCB or.DDB formats. Please specify the software version. We also accept Eagle design files.BRD format. To make sure everything goes smoothly, please check with us to make sure the versions are compatible.
Q2: Is there a minimum order quantity (MOQ) for PCB orders?
Topfast does not require a minimum order quantity. Whether you need prototypes or mass production, we offer flexible support for projects of any size.
Q3: How soon can I expect a response to my quote request?
We promise to reply to all quote requests within 24 hours. We will give you a fast, clear, and competitive offer.
Q4: How do you keep PCB manufacturing costs affordable?
Topfast uses advanced manufacturing processes and efficient management systems to reduce production costs without sacrificing quality, delivering high-value PCB solutions.
Q5: How many years of experience does Topfast have in PCB manufacturing?
The company has accumulated more than two decades of experience in the realm of PCB manufacturing and assembly. Its specialization lies in advanced and reliable circuit board production, a proficiency that has earned it the trust of its clients.
Q6: What is the minimum trace width and spacing you can achieve?
We support a minimum trace width and spacing of 3 mil. For finer lines, our tightly controlled etching process ensures precision and avoids over-etching.
Q7: What solder mask colors are available?
We offer a wide range of solder mask colors, including green, black, blue, red, white, and more. Special color requests are welcome—feel free to inquire.
Q8: What surface finish options do you provide?
We offer various surface finishes, including HASL (lead-free and leaded), ENIG, immersion silver, immersion tin, OSP, soft gold, and hard gold.
Q9: What is the smallest hole size you can produce?
Mechanical drilling: 6 mil
Laser drilling: 4 mil
Note: Including multiple hole sizes may increase manufacturing complexity and cost. We recommend consulting with us during design.
Q10: Do you support impedance control and stack-up design?
Yes, we provide free impedance calculation and stack-up design support using industry-leading field solvers to ensure signal integrity.
Q11: Can you manufacture panels with different materials?
Yes, we can produce panels with mixed materials. Feasibility is subject to design review.
Q12: Do you offer peelable solder mask?
Yes. Peelable solder mask is often used to protect specific areas during assembly (e.g., wave soldering) to prevent solder contact.
Q13: Can you produce flexible and rigid-flex PCBs?
Topfast specializes in manufacturing PCB flexibles (FPC) and rigid-flex boards, meeting high-reliability and complex structural requirements.
Q14: What electrical testing methods do you use?
We provide flying probe testing and test fixture options to ensure circuit connectivity and insulation performance.
Q15: Can you manufacture PCBs for high-frequency/RF applications?
We have extensive experience producing high-frequency PCBs using materials such as Rogers and Taconic, suitable for RF and microwave applications.
Q16: Do you offer metal-core PCBs (e.g., aluminum-based)?
Yes, we support metal-core PCB production (e.g., aluminum substrates) with up to 6 layers, ideal for high heat dissipation applications.
Q17: Can you bevel hard gold fingers?
Yes, we provide beveling services for hard gold fingers to improve insertion durability and connectivity.
Q18: Is there a charge for panelization?
Topfast offers free panelization service to optimize material usage and assembly efficiency.
Q19: Can you produce HDI PCBs?
We support advanced HDI processes, including blind/buried vias, laser microvias, and via-in-pad technologies.
Q20: Can you manufacture castellated holes (half-holes)?
We offer castellated hole manufacturing. For best results, larger hole sizes are recommended.
Q21: Do you provide V-scoring services?
Yes, we offer V-scoring for bare PCB orders to facilitate depanelization.
Q22: What factors affect PCB manufacturing cost?
Key factors include: order quantity, board thickness, number of layers, copper weight, HDI features, trace complexity, impedance control, and special processes.
Q23: Do you offer controlled-depth milling or special routing?
We provide precision milling, controlled-depth routing, and special shape cutting for complex PCB outlines.
Q24: What types of laminates do you use?
We work with various high-quality materials, including FR4, high-Tg FR4, Rogers, Arlon, polyimide, aluminum-based, ceramic-based, Taconic, Megtron, and more.
Q25: Are your PCBs RoHS compliant?
Yes, Topfast’s default production is RoHS compliant. Leaded finishes are also available upon request.