The part number 108-0302-001 refers to a Johnson / Cinch Connectivity Solutions insulated banana plug (red). It is a test plug used in electrical and measurement applications.

 Specifications of 108-0302-001

• Manufacturer: Johnson / Cinch Connectivity Solutions
• Part Type: Banana Plug – Insulated, solderless, tapered handle
• Color: Red
• Plug Body: Brass (per QQ-B-626D standard)
• Plug Spring: Nickel silver (per QQ-C-533 standard)
• Finish: Nickel plating
• Insulated Handle: Nylon 6/6 (per ASTM D4066, UL approved, self-extinguishing)
• Electrical Ratings:
  • Current: 15 amps
  • Breakdown Voltage: 3500 Vrms minimum
  • Contact Resistance: 0.010 ohms
• Dimensions:
  • Standard banana jack diameter: 0.166 in (4.23 mm)
  • Handle length: 22.2 mm
  • Overall plug length: 25–30 mm (varies slightly by datasheet)
• Features:
  • Fast solderless connection for up to 16-gauge wire
  • Recessed plug body to limit shock hazard
  • Durable nickel plating for corrosion resistance