MCP6402-E/SN MCP6402-E/SN 运放IC MCP6402-E/SNVAO MCP6402H/SN MCP6402-H/SN MCP6402-H/SNVAO MCP6402T-E MCP6402T-E/MNY MCP6402T-E/SN MCP6402T-E/SNVAO