Our custom conical antenna battery spring is a multi-functional wire form terminal spring made of C5191 phosphor bronze, designed to work as both RF antenna spring and PCB contact spring for compact wireless electronic devices. It is integrally tapered conical coil wound by precision CNC spring machine, with bent positioning hook terminal for PCB soldering and assembly fixation. After forming, the whole piece undergoes high-temperature bright annealing to fully eliminate internal forming stress and avoid springback deformation. Subsequent degreasing cleaning plus passivation treatment removes surface oil stains and forms an anti-oxidation protective layer to maintain stable electrical conductivity long-term. As a trusted OEM manufacturer offering full custom service, we tailor all dimensions, coil counts, terminal bending angles and elasticity to match unique wireless device circuit layout demands. Every finished phosphor bronze spring passes strict full inspection on conical coil diameter, overall height, terminal bending angle and elastic tolerance before shipment.
