Passive crystal oscillators (105) RFFETMOSFET (63) LEDUPS And other types of power supply modules (59) (48) TVS diodes (transient voltage suppression diodes) (46) The row needles/ row mothers (34) Commutation diodes (34) CPLD-FPGA chips (30) Silicon control SCR (30) Magnetic sensors (27) MOSFET (27) Zener diodes (23) Board to Board connector (20) The DC-DC power supply modules (18) Signal relays (12) Backboard connectors (11) Digital triodes (11) The AC-DC power supply modules (10) LEDs (10) Bipolar transistors (triodes) (7) 32-bit microcontroller-MCU (6) ARM Microcontroller-MCU (6) Connector accessory kits (6) Schottky diodes (6) Instrumentation operational amplifiers (6) Switching diodes (5) PIN diodes (5) Other modules (5) Military connectors (4) Drive chips (4) Industrial relays (4) Circuit protection kits (4) Digital signal processors and controllers (3) Universal diodes (3) Power switch chips (3) IGBT tubes (3) (3) Audio and video interface chips (2) Interface special chips (2) D-Sub connection accessories (2) Ultra-fast / fast recovery diodes (2) Delay timing relays (2) Power chargers (2) PTC self-Resettable Fuses (2) Darlington tubes (2) Wireless transceiver chips (2) Antennas (2) (2) 16-bit microcontroller-the MCU (1) EEPROM Memory (1) Line to board/line to line connectors (1) Screwdrivers/ tweezer/s wrench tools (1) Battery power management chips PMIC (1) Development board kits (1) Optocouplers (1) Pressure sensors (1)