SMT and Auto Insertion Machine Critical 1 Spare Parts Definition

Critical 1 Spare Parts Definition

What are Critical 1 Spare Parts?

Critical 1 (C1) parts are parts that may fail with no warning, may not show signs of wear, or may cause other parts to fail.  They cause a machine failure with no work around.  These are the parts that most concern our customers as their failure can stop a production line.  

C1 parts are identified by engineering and product support teams during the product development/introduction process.  

C1 lists are generated and tracked as part of the development cycle and are made available prior to shipments of production volumes to customers.

As a guideline C1 parts will not be duplicated in RPKs.  There may be exceptions that will require cross functional agreement.  

What is NOT typically considered a Critical 1 Spare Part:

Consumables or wear parts

High usage spares

Exceptionally robust parts or assemblies

General Hardware (typically) 

What is the key difference between Critical 1 and Replacement Parts Kits (RPK)?

Replacement parts kits (RPK) include items customers are expected to need within 6 months of use.  Examples of parts in the RPK includes consumables items, wearable parts and predictable failures.  

Typical RPK items:


Light bulbs


Wearable tooling

Hardware associated with general maintenance

AI spare parts、Universal Parts,UIC,TDK.VCD
AI spare parts、Universal Parts,UIC,TDK.VCD

About SMThelp

We design and manufacture Odd Form component auto insertion machine,SMT equipment, and providing spare parts service. Worldwide Installation and on site support and training.

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