v3.25.2
Cover - shares
6 Months Ended
Jun. 30, 2025
Jul. 28, 2025
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Current Fiscal Year End Date --12-31  
Entity File Number 001-42106  
Entity Registrant Name RF ACQUISITION CORP II  
Entity Central Index Key 0002012807  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 111 Somerset  
Entity Address, Address Line Two #05-07  
Entity Address, City or Town Singapore  
Entity Address, Country SG  
Entity Address, Postal Zip Code 238164  
City Area Code +65  
Local Phone Number 6904-0766  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company true  
Entity Common Stock, Shares Outstanding   15,012,500
Units Each Consisting Of One Ordinary Share And One Right [Member]    
Title of 12(b) Security Units, each consisting of one ordinary share and one right  
Trading Symbol RFAIU  
Security Exchange Name NASDAQ  
Ordinary Shares Par Value 0. 0001 Per Share [Member]    
Title of 12(b) Security Ordinary shares, par value $0.0001 per share  
Trading Symbol RFAI  
Security Exchange Name NASDAQ  
Rights Each Right Entitling Holder Thereof To Onetwentieth Of One Ordinary Share [Member]    
Title of 12(b) Security Rights, each right entitling the holder thereof to one-twentieth of one ordinary share  
Trading Symbol RFAIR  
Security Exchange Name NASDAQ