PCB Assembly Service

We provide one-stop PCB Assembly services, including design, manufacturing, testing and assembly. We have a professional team and advanced equipment to provide a full range of services for your project.

You can return or exchange goods without any reason

Your satisfaction are the best compliments to us.

Our printed circuit board assembly processes

SMT workshop

SMT workshop
  • The company has a 3000㎡100,000-level dust-free workshop, 10 fully automatic high-speed SMT patch lines, equipped with fully automatic solder paste printing machines, newly imported Yamaha YS24, YS12, YS12F, ten-temperature zone nitrogen reflow oven, wave soldering and other high-end equipment.
  •  Online 3D SPI, online AOI, X-RAY, intelligent first article tester, fully automatic depaneling machine, selective conformal paint coating and other equipment.
  • At the same time, the production pass rate of SMT is 99.9%.

DIP workshop

  • The company has a 1000㎡DIP electrostatic workshop.
  • Equipped with a professional DIP post-welding team and advanced post-welding equipment.
  • After the equipment is complete, it will be equipped with 6 lead-free wave soldering lines, with a daily plug-in capacity of up to 100,000 points.
DIP workshop

wave soldering

Reflow-Soldering equipment

The parameters of the wave crest furnace are set according to each model. Adjust the operating speed, spray width and spray speed, and wave crest height, etc.

When changing to a new model or mass production, the furnace temperature needs to be measured once a day. After welding, the first 5 PCB boards are tracked, and the relevant parameters are adjusted according to the welding effect. The relevant parameters are also randomly checked, tracked and adjusted during the entire welding process to ensure welding. quality.

Transport speed (mm/Min): Set parameters according to the welding quality of the product.
Spray (mm/Sec): Set parameters according to product welding quality.
Preheating temperature of the first temperature zone: 130℃±5℃
Second temperature zone preheating temperature: 140℃±5℃
Preheating temperature of the third temperature zone: 150℃±5℃
The preheating temperature is for reference. Set the parameters according to the welding quality of the product.
Tin furnace (℃): 270(℃)±5℃
Tin furnace alarm temperature: lower limit: 265°C; upper limit: 275°C

Reflow soldering

Ten temperature-controlled zone nitrogen reflux furnace
  • Lead-free
  • 10 temperature zones,
  • smooth temperature rise
  • reliable quality
  • suitable for super large and super thick PCB welding Temperature control accuracy: within ±1°C
  • Maximum weldable size width: 600mm

The most stringent and comprehensive 19-step quality inspection process in the industry

19 quality inspection steps

Our PCB assembly capabilities

  • Testing equipment: X-RAY nondestructive tester, first piece tester, AOI automatic optical tester, ICT tester, BGA rework station.

  • Placement speed: Chip placement speed (at best conditions) is 0.036 S/piece.

  • Mounted component specifications: Pasteable smallest package, IC type chip accuracy.

  • Mounted PCB specifications: Substrate size, substrate thickness.

  • Throw rate: 1. Resistance-capacitance ratio 0.3%; 2. IC type without throwing material.

  • Board type: POP/common board/FPC/rigid-flex board/metal substrate.

  • DIP daily production capacity: DIP plug-in production line 50000 points/day, DIP post welding production line 20000 points/day, DIP test production line 50000pcs PCBA/day.

  • Assembly processing capability: The company has more than 10 advanced assembly production lines, dust-free and anti-static air-conditioning workshop, TP dust-free workshop, equipped with aging room, test room, functional test isolation room, advanced and perfect equipment, can carry out various product assembly, packaging, testing, aging, etc. production. Monthly production capacity can reach 150,000 to 300,000 sets/month.

  • Number of layers (max): 2-18, 20-30
  • Plate type: FR-4, ceramic sheet, aluminum base sheet PTFE, halogen free sheet, high Tg sheet, Rogers, etc Teflon E-65, etc
  • Sheet mixing: 4 layers – 6 layers, 6th floor – 8th floor
  • Biggest size: 610mm X 1100mm
  • Dimensional accuracy: ±0.13mm, ±0.10mm
  • Plate thickness range: 0.2mm–6.00mm, 0.2mm–8.00mm
  • Thickness tolerance (t≥0.8mm): ±8%, ±5%
  • Thickness tolerance (t<0.8mm): ±10%, ±8%
  • Media thickness: 0.076mm–6.00mm, 0.076mm–0.100mm
  • Minimum line width: 0.10mm, 0.075mm
  • Minimum spacing: 0.10mm, 0.075mm
  • Outer copper thickness: 8.75um–175um, 8.75um–280um
  • Inner layer copper thickness: 17.5um–175um, 0.15mm–0.25mm
  • Drilling hole diameter (mechanical drill): 0.25mm–6.00mm, 0.15mm–0.25mm
  • Hole diameter (mechanical drill): 0.20mm–6.00mm, 0.10mm–0.20mm

we can provide you with :

What everyone is asking

We mainly focus on high-quality PCBA services with "zero defects, small and medium batches"

A complete turkey PCB assembly service ofers multiple benefts ncluding ease of management low or high volume assembly, muliple services, fast ead times, and
more!

offer turnkey PCB assembly services means that the supplier will handle al tasks including component or part sourcing, manufacturing, assembly and final delivery.

Yes, our experienced team is able to provide custom surface treatments (such as 0SP ENI, ImAg, ENIG,etc,) according to your requirements.

Just upload Gerber files, BOM files and design files, and the Keepbest team will provide a complete quotation within 24h.

Get A quote

Fill in your requirement information and upload Gerber and BOM files, we will give you a quote within 24 hours.

Get A Quote

Fill in your requirement information and upload Gerber and BOM files, we will give you a quote within 24 hours.

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