The JK250-030U with PTC Resettable Fuses Through Hole RoHS is an electronic component manufactured by Jinrui Electronic Materials. This part is a type of polymeric positive temperature coefficient (PPTC) device, which acts as a resettable fuse, offering self-resetting over-current protection for electronic devices. It has a current rating of 250mA and a voltage rating of 30V. This part is compliant with the RoHS directive, meaning it is free from hazardous or restricted substances commonly found in electrical and electronic products. The component has a through-hole configuration, which ensures that it affords a reliable connection in applications that require continuity and/or electrical contact.