UAV IC

I. Resistors

1. Classification and Applications in Drones

(1) Standard Thick-Film Surface-Mount Resistors 0402/0603 (Most Commonly Used in Drones)

Material: Thick-film ceramic; Power ratings: 1/16W, 1/10W

(2) High-Power Low-Resistance Sampling Resistors (Specifically for ESC Power Circuits)

0805/1206/2512 milliohm power resistors: 0.003Ω, 0.005Ω, 0.01Ω

(3) High-Voltage Resistors (Battery Input, BMS Protection Board)

2512 high-voltage resistors, rated for 200V or higher, used for 4S battery voltage division and electrostatic discharge

(4) Resistor Array 0402×4

Simplifies GPIO pull-up/pull-down wiring; used for flight controller buttons and LED arrays

II. Capacitors (Core passive components for drones, divided into three categories)

1. MLCC (Multilayer Ceramic Capacitors) (Used in 90% of drone applications)

Sizes: 0402/0603/0805, X7R/X5R materials

2. Electrolytic Capacitors (High-capacity energy storage, ESC / main power bus)

Surface-mount aluminum electrolytic / polymer solid-state electrolytic, rated voltage 25V/35V

3. Tantalum Capacitors (High-Precision Analog Power Supplies)

3.3V clean power supply for sensors (TPS7A4700 output), ultra-low ripple; combined with MLCCs for filtering to prevent altitude and attitude drift in barometers and gyroscopes

III. Power Inductors (Core of DC-DC Step-Down Converters)

IV. Ferrite Beads (The Ultimate Solution for Digital/Analog Power Isolation)

V. NTC Thermistors (Temperature Sensing)

VI. TVS Diodes (Passive Devices for Surge/ESD Protection)

VII. Schottky Diodes (Reverse Polarity Protection, Turn-off Current)

VIII. Fuses (Overcurrent Protection)

IX. Crystal Oscillators (Passive Crystal Oscillators)

X. 0Ω Resistors (Passive Jumpers / Ground Isolation)

XI. RF Passive Components (Video Transmission / Wireless)