The unit features a unique double-spiral spring construction ensuring high resilience against vibration and impacts, and therefore high contact reliability. As a connection component, a single square contact or multiple contacts can be used, offering added flexibility on component layout. Insulation coating around the outer surface of the spiral spring prevents any changes in the signal path, ensure that connected devices such as RF antennas retain a stable high-frequency performance. The series has four mounting heights variety; 0.85, 1.6, 1.8, and 2.0 mm. The springs are rated for up to 1A and operate in the -30 to +85°C temperature range.