Ask the Experts
July 27, 2009
Estimated SMT component placement cost
Is there any range or estimated standard placement cost calculation for placing SMT components?
Can you point to formulas or methods to estimate the cost?
Expert Panel Responses
I am not aware of any standard. The best way I know of is to use the counter on most machines and see how many components per 8 hours have been placed. Then apply overhead and production costs divided by that number.
Additionally, I recommend that you compare that placed component "counter" number against the manufactures "claimed" placement speed. If they are within say 10% you probably are doing pretty well.
I generally find them off 20-40 percent, but the problem is typically downtime during changeover and reloads not the machine. 15 minutes (20 seconds per feeder) to swap out 50 pre-staged feeders would be reasonable and that time should be in your cost calculation.
If you only measure an hour or so you will not see the real numbers, be sure you use at least 8 hours.
President & CEO - Retired
Bliss Industries, Inc.
Retired - Mr. Bliss has 20+ years experience creating process methods that improve profitability by maximizing hidden unused capacity and throughput. Ken has expertise in all areas of manufacturing specializing in electronics assembly.
This would be the loaded hourly cost for your facility divided by the average component placement rate per hour. This would provide the average cost per component placement.
For example your loaded cost is $75 per hour and the placement machine rate is 5,000 components per hour, your cost per component is $0.015.
Regional Sales Manager
OK International Inc.
Mr. Zamborsky serves as one of OK's technology advisers to the Product Development group. Ed has authored articles and papers on topics such as; Low Volume SMT Assembly, Solder Fume Extraction, SMT Rework, BGA Rework, Lead Free Hand Soldering, Lead Free Visual Inspection and Lead Free Array Rework.