1. Main Product Types Dual-Winding SMD Coupling Inductors Two symmetric windings on a single magnetic core, balanced coupling coefficient, mainstream for automotive communication bus coupling circuits. Toroidal Coupling Chokes Closed ring core with low magnetic leakage, excellent common-mode coupling & noise suppression for vehicle power/signal lines. High-Frequency RF Coupling Inductors High SRF and high Q factor, designed for GPS, Bluetooth, keyless entry weak signal coupling. Molded High-Current Coupling Inductors Composite magnetic core, high saturation current, used for new energy vehicle power coupling circuits. Mini Low-Profile Coupling Inductors Ultra-small SMD packaging for compact camera, T-box and instrument PCB layouts. 2.Core Technical Specifications Inductance Range: 100nH ~ 100μH Automotive Standard: AEC-Q200 Grade1 / Grade2 Operating Temperature: -55℃ ~ +125℃ Stable Coupling Coefficient: Consistent signal/power transfer between windings Low DCR per winding: Reduce power loss and heat buildup High self-resonant frequency: Avoid resonance distortion at automotive communication frequency bands Strong anti-vibration & anti-shock performance per ISO vehicle reliability standards Low inter-winding parasitic capacitance, prevent high-frequency signal crosstalk Isolation voltage optional: Meet automotive safety isolation requirements 3.Core Advantages Dedicated dual-winding coupling design, stable energy/signal transfer between isolated circuits AEC-Q200 automotive certification, no parameter drift under extreme cold and high engine bay heat Strong immunity to EMI from ignition coils, drive motors and high-voltage vehicle wiring Low magnetic leakage shielded options eliminate cross-interference with adjacent signal traces High saturation performance withstands vehicle startup instantaneous current surges Mini SMD footprints compatible with automated SMT assembly of compact automotive control boards Excellent temperature stability of coupling coefficient, no signal attenuation or distortion during temperature cycling 4.Typical Circuit Functions Inductive coupling for CAN/LIN/Ethernet automotive communication bus differential signal transmission Isolate power supply noise from sensor weak analog signals via inductive coupling RF signal coupling for vehicle keyless entry, GPS and Bluetooth antenna circuits Common-mode noise suppression through magnetic coupling between paired signal lines Energy transfer coupling for low-power auxiliary sensor modules Audio signal isolation & coupling for car infotainment systems to eliminate ground loop noise 5.Application Fields Automotive CAN FD / LIN communication modules, vehicle Ethernet ADAS camera interfaces, TPMS tire pressure sensors, intelligent keyless entry RF circuits, car audio & head unit signal boards, BMS battery sampling coupling circuits, body control module (BCM) signal lines, T-box vehicle telematics equipment, new energy vehicle high-voltage auxiliary isolation circuits.