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PCB Assembly Capabilities

Our state-of-the-art facility uses the latest SMT and THT equipment to
manufacture quality and reliable products in a timely fashion for our customers.

• Automatic Pick & Place
  Mycronic MY300

• Automatic Pick & Place
  Machine Yamaha YSM 20

• Yamaha YCP 10
  Automatic Stencil Printer

• BTU Pyramax&#; Convection
  Reflow Oven 100A

• ITW EAE MPM 100
  Automatic Stencil Printer

• Automatic Optical Inspection
  Yestech BX

• Novo® 103
  Selective Soldering Nordson

• Vapor Phase Oven
  R&D Vaportech RD52

• T-9 Typhoon
  Water Soluble Inline Cleaner

Type of Services

PROTOTYPE ASSEMBLY

We specialize in quickturn prototype and short run printed circuit board assembly. Consignment and turnkey options available.

PRODUCTION ASSEMBLY

Our high speed automated machines can handle production orders. No NRE, minimums or contracts.

Shenzhen Thriver Digital Tech Co., Ltd. Product Page

BOX BUILD

We offers box build and electro-mechanical assembly services.

CONSIGNED ASSEMBLY (KITTED)

You provide all the parts including the bare printed circuit boards and electronic components, we assemble your boards using our state of the art automated equipment.

PARTIALLY CONSIGNED

You provide the "hard to find" parts, the "custom" parts, the parts you have in inventory, whatever parts you have! We help procure the rest of the parts, the PCBs, whatever you don't provide, then assemble your printed circuit boards.

TURN-KEY ASSEMBLY

We manage the entire process from procuring the bare printed circuit boards and all parts through assembly and testing as your application requires.

File Requirements

Please include the following files with your order. Please include then in a single ZIP file.

1. Gerber Files
   Please include all the layers (copper, soldermask, silkscreen, solder paste, etc.
2. Centroid File
   Also known as pick and place file. It should include component locations, rotations and reference designators.

3. Bill of Materials (BOM) in Excel format. Your BOM should include:
   • Reference designators
   • Quantity of each part
   • Manufacturer part number
   • Part description
   • Type (SMT, Thru-Hole, Fine-pitch, BGA, etc.).
   • Package description (QFN32, SOIC, , etc. package is very helpful but not required).

PCB Fabrication Requirements

All Printed Circuit Boards must have fiducial marks.

• SIZE LIMITATIONS
  • Your PCB length and width must be at least 2 inches (approximately 50mm).
  • If your individual PCB is smaller than this, then please panelize your boards. Our engineering team will be happy to assist if you need help

• COMPONENTS NEAR EDGE OF PCBS
  • Components should be at least 0.120 inches (3mm) from board edge. If components are closer or overhang the board edge then borders will be required. When components are close to the edge we prefer tab routs with mouse bites instead of V-scored panels

Component/Part Guidelines

Guideline for Ordering Board Level Components (Parts) Including Overages

• Extra parts will be required on small builds (1 to 25 boards) to be as follow:
• to size: Minimum extra quantity 25 plus required quantity
• to size: Minimum extra quantity 10 plus required quantity
• On large size components 1 or 2 extra parts is fine

• All items must be on a continuous strip or reel
• For large runs extra parts by percentage is OK
• Special instructions must be provided if components need special handling such as no clean solder.

If you have further questions regarding these specifications please contact us for more information.

Packaging

1. Please ship all kits to:
2. PCB Unlimited
3. Attn: (Insert Order Number)
4. SW Avery St.
5. Tualatin, OR
6. Please ship each kit separately. Do not combine multiple orders in one box, unless kits are clearly marked and separated.
7. All kits should have a packing slip listing all the items and quantities included in the kit.
8. We appreciate an sent to us with the tracking information, especially when drop shipping multiple components from suppliers.

Applications

Industrial

New Energy

Network & Computer

Biomedical

Consumer Electronics

Aerospace

Automotive

Telecommunication

Our PCB Assembly Process

1. Our team confirms the necessary files and order details.
2. Manufacture SMT stencil (if needed).
3. Program our machines from the BOM and Centroid file, before the materials arrive. Discrepancies found in the files will be addressed.
4. After all the materials are received, our team performs a kit audit of the materials. Discrepancies or additional questions will be addressed. Before the assembly lead time begins we must have all questions answered
5. If all materials are in before 12pm PST, the assembly lead time starts the next business day. Materials received after 12pm PST will be considered received on the next business day. The reason for this is to allow proper time for the materials to go through the kit audit process.
6. The SMT components are assembled first with our automated equipment. The first board goes through extensive QA to assure part placement and polarity are correct. The boards are then inspected (visually and with an AOI machine) as they come off the reflow oven.
7. BGA components are X-rayed to verify placement accuracy and to detect any solder bridges.
8. After SMT the boards are washed when applicable.
9. Thru-hole components are inserted and soldered by hand or with a selective soldering machine depending on the quantity and board design.
10. After thru-hole boards are washed again when applicable.
11. A final quality inspection is performed.
12. The finished PC board assemblies and all extra materials are prepped for packaging. Your materials are shipped back to you, tracking number is sent via

Checklist

PBC Unlimited wants our customers to experience a seamless and accurate assembly process. To ensure that your job is not placed on hold, please follow these guidelines:

1. Accurate Data
   An error free assembly process requires accurate data. Each job should have a BOM (bill of materials), a pick and place file (also known as a centroid file) and matching Gerber data. Add a DO NOT POPULATE (DNP) column to the BOM if there are parts which should not be populated on the PCB.
2. Ensure Proper Footprints
   Some parts are available in different packages. Make sure that the part you specify in the BOM matches the footprint on the PCB.
3. Organize Components
   Parts should be separated into individual bags or trays. Each bag or tray should be marked with Manufacturer name and Manufacturer part number and all reference designators where the part is used. If needed, you can substitute distributor name and part number in place of (or in addition to) manufacturer information.
4. Multiple Jobs Per Order
   The parts for each job should be packaged separately. Include separate BOM and pick and place file for each job
5. Component Quantities
   Include extra parts to account for possible attrition during assembly.
   
   Extra parts will be required on small builds (1 to 25 boards) as follows:
   • to size: Minimum extra quantity 50 plus required quantity.
   • to size: Minimum extra quantity 25 plus required quantity.
   • On large size components 1 or 2 extra parts is fine.
   • We prefer all SMT parts to be on a continuous strip or reel.
   • For large runs extra parts by percentage is OK
   
   We will return any unused parts to you when we ship your assembled boards back to you.
6. Update your BOM and Pick and Place File
   If you have any last-minute design changes, please remember to reflect these changes in your BOM, pick and place file and any other relevant documentation.
7. Mark Polarity
   Make sure you indicate proper orientation for all parts that have polarity. Place a dot or a number &#;1&#; on pin 1 of ICs where the orientation is not obvious. Ensure that polarized capacitors and diodes are properly marked.
8. Special Instructions
   Provide detailed instructions for any special procedures required to assemble your boards. Include sketches, photos, PDF files and/or drawings as needed
9. Drop Shipping from Suppliers
   Please ask your suppliers to place your PCB Unlimited Order Number on the outside of any package dropped shipped to us.

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The company is the world’s best PCB And PCBA Assembly Service supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.