Gold interconnectors for solar generators in low Earth orbits

For low Earth orbit applications gold based electrical connections have keen developed consisting of 12.5 μm thin gold solar cell interconnectors with stress relief loop, 50 μm thick gold string terminations and gauge AWG 24 stranded gold wires. Modules with typical 4 cm by 6 cm silicon solar cells mounted on a lightweight carbon fibre reinforced honeycomb substrate were manufactured including the new components applied by resistance welding. A long duration thermal cycling test was started cycling two coupons at between -110°C and +110°C. As of November 1994, 27500 cycles have been completed, and the test is continuing. Evaluation of module integrity at periodic intervals yielded no measurable degradation up to date