| Document And Entity Information | May 04, 2022 |
| Document Information [Line Items] | |
| Entity, Registrant Name | CPS TECHNOLOGIES CORP. |
| Document, Type | 8-K |
| Document, Period End Date | May 4, 2022 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 0-16088 |
| 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 |
| City Area Code | 508 |
| Local Phone Number | 222-0614 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity, Emerging Growth Company | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | CPSH |
| Security Exchange Name | NASDAQ |
| Amendment Flag | false |
| Entity, Central Index Key | 0000814676 |
