Spring fingers, also known as shield fingers, grounding springs or universal ground contacts, provide grounding between the device and PCB and shielding to prevent EMI noise and static caused by motors, speakers and microphones or any other vibrations within an application. Additional functions of spring fingers include antenna feeds, low voltage electrical connections and they can also be used as a connection for simple stacking applications between primary and secondary PCBs. These standard spring fingers are gold plated and have an uncompressed height of 1.7mm and a working height of 0.5 to 1.4mm.
With a compact design, these standard spring fingers offer PCB space saving, design flexibility as well as a highly reliable connection.
Typical applications for these standard spring fingers include mobile phones, wearable devices, game consoles, tablets, patient monitoring devices, POS scanners, security devices and GPS devices.