Final Assembly

Category: Special Processing

Description: -- Final Assemby consists of processes that must be performed by hand, such as positioning hardware parts, installing jumper wires, and staking those wires.

Major Cost Drivers – Final Assembly

// Process Time for final assembly manual processes.

Process Time = Final Assembly Install Process Time + Wire Install Process Time

  • Final Assembly Install Process Time = (Final Assembly Align Time* Final Assembly Quantity) + Hardware Install Time
    • Final Assembly Quantity = (PSO)
    • Final Assembly AlignTime = (Machine variable)
    • Hardware Install Time = Hardware Stackup Locations* Hardware Stackup Install Time
      • Hardware Stackup Locations = (PSO)
      • Hardware Stackup InstallTime = (Machine variable)

//Jumper wire installation.

Note: One end will be soldered and the other end will be assembled in hardware stackup.

Wire Install Process Time = ((Jumper Wire Cut Time +
Jumper Wire Strip Time + Jumper Wire Solder Time)*
Jumper Wire Quantity) + Jumper Wire Staking Time +
Jumper Wire Curing Time

  • Jumper Wire Cut Time = (Machine variable)
  • Jumper Wire Quantity = (PSO)
  • Jumper Wire Strip Time = (Machine variable)
  • Jumper Wire Solder Time = (Machine variable) 
    • Jumper Wire Staking Time = (Staking Mix Time /Batch Size) + (Jumper Wire Staking Time * Jumper Wire Staking Locations)
      //If “Is Jumper Wire Staking Required” = true
      • Is Jumper Wire Staking Required = (PSO)
      • Jumper Wire Staking Time = (Machine variable)
      • Staking Mix Time =   (Machine variable)
      • Jumper Wire Staking Locations =  (PSO)
    • Jumper Wire Curing Time = ((Load Time + Oven Time)/Batch Size) //If “Is Jumper Wire Staking Required” = true
      • Load Time = Oven Load Time + Oven Unload Time
        • Oven Load Time =  (Machine variable)
        • Oven Unload Time = (Machine variable)
    • Oven Time =  (Machine variable) * SEC_PER_HR

User Inputs –- Final Assembly

PSO: Quantity of Parts to be Manually Aligned to PCB (Frames, Heatsinks, Shunts, Fences, etc.)

PSO: Quantity of Hardware Stackup Locations

PSO: Quantity of Jumper Wires

PSO: Is Jumper Wire Staking Required?

PSO: Quantity of Jumper Wire Staking Locations