Document And Entity Information - shares	3 Months Ended
	Mar. 30, 2024	Apr. 30, 2024
Document Information [Line Items]
Entity Central Index Key	0000814676
Entity Registrant Name	CPS TECHNOLOGIES CORP/DE/
Amendment Flag	false
Current Fiscal Year End Date	--12-28
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 30, 2024
Document Transition Report	false
Entity File Number	0-16088
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2832509
Entity Address, Address Line One	111 South Worcester Street
Entity Address, City or Town	Norton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02766-2102
City Area Code	508
Local Phone Number	222-0614
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CPSH
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		14,519,215