U489,SWITCH HARDWARE
U48SCWZQE,拨动开关 Toggle
U48TCWZ3QE,拨动开关 Toggle
U490B-M,IC PHASE CONTROL ONE-SHOT 8DIP
U490B-MFP,IC PHASE CONTROL ONE-SHOT 8-SOIC
【Atmel】U490B-MFPG3,IC PHASE CONTROL ONE-SHOT 8-SOIC
U4922,SWITCH HARDWARE
【Apem】U4943,
