Yes, there is a clear difference. The maximum operating temperature of gold-plated connectors is about 20°C higher than tin-plated ones, while the low-temperature limit is basically the same.

1. Standard operating temperature range

2. Why there is a temperature difference

2.1 Different coating stability

• Gold (Au):
  Chemically inert, highly stable. It resists oxidation and diffusion at high temperatures, maintaining stable contact resistance. It can operate reliably at 125°C for long periods.
• Tin (Sn):
  Easily oxidizes at elevated temperatures and can form brittle intermetallic compounds (e.g., Cu₆Sn₅) with copper substrates. It may also generate tin whiskers, which can cause short circuits. Long-term use above 105°C leads to rapid degradation.

2.2 Mechanical property differences

• Tin begins to soften significantly above ~130°C, which reduces contact force and increases contact resistance.
• Gold maintains good hardness and elasticity at 125°C, ensuring stable contact performance.

3. Selection guidelines

• >105°C environments(e.g., automotive engine compartments, industrial furnaces):
  → Must use gold-plated connectors 
• Normal temperature / consumer electronics / cost-sensitive applications:
  → Use tin-plated connectorsfor better cost performance
• Special high-temperature applications:
  Gold plating can support -55°C to 150°C or higher(e.g., aerospace-grade applications), while tin is generally not recommended for long-term use above 110°C.