ST7T311R7T6S ST7T311R7T6S IC ST-7TA ST-7TA 200R ST-7TA 500 OHM(501) ST-7TA(N) 500(501) ST-7TA(N)100K ST-7TA(N)100R ST-7TA(N)103 ST-7TA(N)10K