Are the JWPF series contacts offered in gold plating?

At present, the JWPF contacts are not available in gold plating.

What is the difference with the JWPF series contacts?

The difference between SWPT-001T-P025 and SWPT-001T-025 is the base material. With the "P" it is a Phosphor Bronze material. Without the "P" it is a Brass material. The standard, better material is Phosphor Bronze.