Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Mar. 06, 2017
Document And Entity Information
Entity Registrant Name	CPS Technologies Corp/DE/
Entity Central Index Key	0000814676
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	Yes
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	No
Entity Filer Category	Smaller Reporting Company
Entity Public Float		$ 12,000,000
Entity Common Stock, Shares Outstanding		13,203,436
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2016