MCP6242-E/SN MCP6242-E/SN MCP6242-E/SN TEL:88834448 MCP6242-E/SN 运放IC MCP6242E-MS MCP6242-I/MS MCP6242-I/P MCP6242-I/SN MCP6242T-E/MS MCP6242T-E/MSVAO