本规范涵盖了硅、PNPN、晶闸管的详细要求，尤其是作为兼容电子设备电路中的受控整流器、反向阻断三极管器件。（见本文3.2、3.4和6.2。）前缀“TX”表示符合本文4.4中特殊工艺条件、测试和筛选要求以及本文表I、表II和表III中严格质量控制（LTPD）要求的设备。

This specification covers the detail requirements for silicon, PNPN, thyristors for application particularly as controlled rectifier, reverse-blocking triode devices in compatible electronic-equipment circuits. (See 3.2, 3.4, and 6.2 herein.) The prefix "TX" identifies devices meeting the special process-conditioning, testing, and screening requirements in 4.4 herein, and the stringent quality-control (LTPD) requirements in Tables I, II, and III herein.