The BW0040BG-L3.0W1.5H1.5 is a type of surface mount device (SMD) produced by BAT Wireless. It has 3x1.5x1.5mm contacts/springs and is RoHS compliant. This SMD typically uses three pins for power connections, one for the ground, and one for the signal. It is widely used in automotive, industrial, audio/video, and other similar applications. This SMD provides reliable performance, low power consumption, and large packaging size. It is also highly resistant to shock and vibration, making it suitable for harsh environments. It is compliant with the latest RoHS guidelines, making it safe and eco-friendly.