Example of Job Report
   Ex1: Wedge bond, Wire 0.7mil x 2.36mil (60um) Bond-pad
 
To: AAA �C Engineer, Broadcom
From: BBB -  IDAX Microelectronics
Report Date:
 
 
 1st  C/C/C  2nd  D/D/D
Subject: Assembly Report �C Microwave Device
 
 
Job Scope Chip-On-Board Packaging, 5 Boards 62 wires/board x 5 boards
Wedge bond, Alum 0.7 mil
2 Critical Wires of equal length
 
1st Report: C/C/C
 
  1. Incoming Inspection
 
 
Incoming Board surface Observation:
Many short fibers around SMDs corners
Reason:
Probably caused by the soldering operator using paper to wipe off the residual of solder flux
Risk:
Electric short
IDAX Action:
Use tape adhesive to Get those fibers off the board
Suggestion:
Remove fibers after wiping the flux Thoroughly with tape adhesive
 
    
Bonding Diagram
 
  2. First Unit: Not Encapsulated Yet
 
 
Preparation Tagged  each board with a number from #1~#5
Attach die while constrain epoxy within the die size       
Setup on
W/B work-stage     
Ground during Wire-Bond Operation
 
    
 
         
 
 
Side View                                               Machine View
      
Wire-Bond on Die Surface, North Part      Wire-Bond on Die surface, South Part      Wire-Bond on Die Surface, Central Part
 
  
 
 
 
2nd Report: Job is done
 
  1. Measured data
 
 
Chip, Device No: #W1(MP8M7) Thickness (Die+ Epoxy)
10.5 mil
Chip Size
57 x 77 mil
Bond-pad size
2.4mil (60um) x 2.7 mil
Space between bond-pads
0.5 mil
Critical wire length Per machine top View coordination & Calculation Top left Unit1 .04045�� Unit3? 0.4052��
Lower left .04045�� .04048��
  2. Unit3
       
 
 
North Side, Unit3                                            South Side, Unit3
 
 
 
 
       
 
 
West Side, Unit2                                       East Side, Unit2
 
 
 
 
 
 
Encapsulated, Optical Clear
 
 
 
 
Comments Board Wire-bond area trace-ends Very narrow & small pitch
Chip Bond-pad Size & pitch is very small
Wires in west side of die is heavily populated
Wire-bond Difficult
Hard for automation & mass production
 
  
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