BTA40-800B BTA40-800B 双向可控硅 BTA40-800B/600B/700B BTA40-800BRG BTA40-800BRG-JSM BTA40-800BW BTA408X-1000C0T BTA408X-1000C0T,127 BTA408X-1000C0TQ BTA408X-800CT