Shenzhen Yideyi Technology Limited Company 86-136-7006-7254 elva@ydypcba.com
Small Smd Pcb Assembly House Printed Circuit Board Prototype Manufacturing

Small Smd Pcb Assembly House Printed Circuit Board Prototype Manufacturing

  • High Light

    0.075mm smt manufacturing engineer

    ,

    small pcb smt assembly

    ,

    0.075mm Small Smd Pcb Assembly House

  • PCBA Testing
    X-ray,AOI Test,Functional Test
  • Component Sourcing
    Yes
  • Product Name
    China Oem Factory Smt Printed Circuit Boards Pcb Assembly Service
  • Service
    Component Source,PCB&PCBA,One-stop Turnkey Service,24 Hours,pcb
  • Tolerance Of Pcb
    ±5%
  • Layer
    1-60layers
  • Min Line/space
    0.075/0.075mm
  • Usage
    OEM Electronics
  • Place of Origin
    China
  • Brand Name
    YDY
  • Certification
    ISO13485, IATF16949, ISO9001
  • Model Number
    S-001
  • Minimum Order Quantity
    1pcs
  • Price
    Negotiatable
  • Packaging Details
    Inner: PCB: Vacuum Packing, PCBA: ESD Packing, Outer: Standard export carton ,Customized package.
  • Delivery Time
    1-10working days
  • Payment Terms
    L/C, D/A, D/P, T/T, Western Union, MoneyGram
  • Supply Ability
    100000pcs/month

Small Smd Pcb Assembly House Printed Circuit Board Prototype Manufacturing

Smd Pcb Assembly House

 

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PCB Specification

 

Product Name PCB With SMT Assembly Service
Type Rigid
Material FR4, CEM1, CEM3, High Frequency Board,
Layer 1,2,4,6...20Layer
Shape Rectangular, Round, Slots, Cutouts, Complex, Irregular
Cutting Shear, V-score, Tab-routed
Board Thickness 0.2-4mm, regular 1.6mm
Copper Thickness 0.5-4oz, regular 1oz
Solder Mask Green, Red, Blue, Yellow, etc.
Silk Screen White, Black, etc.
Silk Screen Min Line Width 0.006" or 0.15mm
Min Trace/Gap 0.1mm or 4mils
Min Drill Hole Diameter 0.01",0.25mm or 10mils
Surface Finish HASL, ENIG, OSP, etc.

 

 

Our SMT service:

Fast delivery, 4 million patches/day,
Can be sprayed with three anti-paint,double-sided, FPC
Minimum 01005 and 0.2mmBGA
Maximum 1200mm*400mm

 

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Process of SMT manufacturing

1. Material preparation and examination
Prepare the SMC and PCB and exam if there’s any flaws. The PCB normally has flat, usually tin-lead, silver, or gold plated copper pads without holes, called solder pads.

2. Stencil preparation
Stencil is used to provide fixed position for solder paste printing. It’s produced according to the designed positions of solder pads on PCB.

3. Solder paste printing
Solder paste, usually a mixture of flux and tin, is used to connect the SMC and solder pads on PCB. It’s applied to PCB with the stencil using a squeegee on a angle range from 45°-60°.

4. SMC placement
The printed PCB then proceed to the pick-and-place machines, where they are carried on a conveyor belt and the electronic components are placed on them.

5. Reflow soldering
Soldering oven: after SMC was placed, the boards are conveyed into the reflow soldering oven.
Pre-heat zone: the first zone in oven is a pre-heat zone, where the temperature of the board and all the components is raised simultaneously and gradually. Temperature ramp up rate in this section is 1.0℃-2.0℃ per second until it reaches 140℃-160℃.
Soak zone: the boards will be kept in this zone on temperature from 140℃-160℃ for 60-90 seconds.
Reflow zone: the boards then enter a zone where the temperature ramp up at 1.0℃-2.0℃ per second to the peak of 210℃-230℃ to melt the tin in the solder paste, bonding the component leads to the pads on the PCB. The surface tension of the molten solder helps keep the components in place.
Cooling zone: a section to ensure solder freezes at exit of heating zone to avoid joint defect.
If the circuit board is double-sided then this printing, placement, reflow process may be repeated using either solder paste or glue to hold the components in place.

6. Clean and inspection
Clean the boards after soldering, and check if there’s any flaws. Rework or repair the defects and store the products. Common equipment related to SMT include magnifying lens, AOI (Automated Optical Inspection), flying probe tester, X-ray machine, etc.

 

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PCB Boards are mainly used in the Iconsumer electronics board,Industrial Control, Medical Treatment, Lighting, Automobile area and ect.

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