KRC231S/P KRC231S-PTK/P KRC231S-RTK KRC231S-RTK 贴片三极管 KRC231S-RTK/P KRC231S-RTK/P IC KRC231S-RTK/P 原装 KRC231S-RTK/P/NW KRC231S-RTK/PS KRC231S-RTK/PV