半导体放电管选型要点：1）***大瞬间峰值电流IPP必须大于通讯设备标准的规定值。2）开关电压Vs必须小于被保护电路所允许的***大瞬间峰值电压。3）峰值断态电压必须大于被保护电路的***大工作电压。4）若要使半导体放电管通过大的浪涌电流后自复位，器件的维持电流IH必须大于系统所能能提供的电流值。即：IH(系统电压/源阻抗)。半导体放电管半导体放电管P0080SCP0080TAP0080EAP0080EBP0300SCP0300TAP0300EAP0300EBP0640SCP0640TAP0640EAP0640EBP0720SCP0720TAP0720EAP0720EBP0900SCP0900TAP0900EAP0900EBP1100SCP1100TAP1100EAP1100EBP1300SCP1300TAP1300EAP1300EBP1500SCP1500TAP1500EAP1500EBP1800SCP1800TAP1800EAP1800EBP2000SCP2000TAP2000EAP2000EBP2300SCP2300TAP2300EAP2300EBP2600SCP2600TAP2600EAP2600EBP3100SCP3100TAP3100EAP3100EBP3500SCP3500TAP3500EAP3500EBP4000SCP4000TAP4000EAP4000EBP4500SCP4500TAP4500EAP4500EBP5000SCP5000TAP5000EAP5000EBP0080LAP0080LBP0080LCP0080ECP0300LAP0300LBP0300LCP0300ECP0640LAP0640LBP0640LCP0640ECP0720LAP0720LBP0720LCP0720ECP0900LAP0900LBP0900LCP0900ECP1100LAP1100LBP1100LCP1100ECP1300LAP1300LBP1300LCP1300ECP1500LAP1500LBP1500LCP1500ECP1800LAP1800LBP1800LCP1800ECP2000LAP2000LBP2000LCP2000ECP2300LAP2300LBP2300LCP2300ECP2600LAP2600LBP2600LCP2600ECP3100LAP3100LBP3100LCP3100ECP3500LAP3500LBP3500LCP3500ECP4000LAP4000LBP4000LCP4000ECP4500LAP4500LBP4500LCP4500ECP5000LAP5000LBP5000LCP5000EC)