IC AP821 3K9 F 50PPM 型号AP821 3K9 F 50PPM 厂商 Arcol 分类无源元器件 应用电阻器 ROHS✓ 符合ROHS 产品描述 Thick Film Resistors - Through Hole 20W 3.9K ohm 1% TO-220 NON INDUCTIVE