Worksheet and Database for PCB assembly cost analysis
Instructions:
1, For soldered components, assemblies, or operations, use the database provided here. For all other parts, components, or operations, use the munual assembly data from the product design for assembly handbook[3].

2, Record the data on the worksheet in the following order of assembly:
a. Load PCB into fixture
b. Insert all wave-soldered components
(i) auto inserted components
(ii) robot inserted components
(iii) manually inserted components
c. Wave solder
d. Insert and solder all manually soldered components
(i) autoinserted components
(ii) robot inserted components
(iii) manually inserted components
e. Insert and secure all remaining nonsoldered components

6.7 Case studies in PCB assembly
The analyses of two case studies are now presented.

Measuring instrument connector board

The below figure shows the layout of components on the upper and lower side of a small PCB. The cost analysis for the assembly of this board assuming the following:
Labor rate $36/h
Production quantity 1000
Number of batches 2
Boards per panel 4

It is assumed that all DIP sockets, axials, and radials are autoinserted and that all posts and connectors on the upper side of the semiauto-inserted beford wave solder. The single connector on the underside of the board must be hand inserted and hand soldered after wave soldering has occurred. The total cost of assembly of this board is $5.46, and of this total, $2.17 is associated with the single hand-inserted and hand-soldered connector on the underside of the board. This highlights the importance of avoiding manually inserted and soldered parts as much as possible. The cost of this particular board could almost be halved by a simple redesign to place this single connector on the upper side of the board.