WFS 80 020 28 x 28 LEMWM28E90 WFS 80 020 28 x 28 SAW 822 lshm-120-04.0-f-dv-a-s-k-tr WB 10 - 100 V/8 OHM (WHITE) WFK 18 G 54 x 94 L PWS-E Flat WFK 25 GK 38 x 38 SAW 933 电阻样品 WFK 25 GK 54 x 94 L SEMIPOINT 4 电阻2.7K 精度%1 白色接线排母3pin