Marking code search for "JK4", search JK4 found 2 records.

Marking of electronic components, SMD Codes JK4, JK4**. 2SK3666, S-80143CNMC, ic marking code.

PartNumber	Marking code	Manufacturer	Package
2SK3666	JK4		CP
S-80143CNMC	JK4		SOT-23-5