Ultra-Fine Thermocouple - Polymer-Coated Thermocouples Smaller Than AWG 50 for Temperature-Monitored Catheters
EAF-02Medical Cables

Ultra-Fine Thermocouple

Polymer-Coated Thermocouples Smaller Than AWG 50 for Temperature-Monitored Catheters

Junkosha's Ultra-Fine Thermocouple enables precision temperature monitoring in ablation catheters and esophageal diagnostic systems. Available in Type-T (copper-constantan) and Type-K (chromel-alumel) configurations, with conductor sizes from AWG 38 down to AWG 50 (0.025 mm). Fewer than a handful of manufacturers globally can produce thermocouples thinner than AWG 38; Junkosha has commercialized versions below AWG 50 with JIS C 1602 Class 1 temperature tolerance (±0.5°C for Type-T, ±1.5°C for Type-K).

Key Features

  • Ultra-fine conductor range: AWG 38–50 (as small as 0.025 mm)
  • Type-T (copper-constantan) and Type-K (chromel-alumel) thermocouple types
  • JIS C 1602 Class 1 temperature tolerance: ±0.5°C (Type-T) or ±1.5°C (Type-K)
  • High reliability with rapid thermal response and excellent thermoelectric properties
  • Multiple insulation materials: polyurethane, polyamide-imide (PAI), polyimide (PI), PFA
  • Flexible design for catheter integration with optional UV-resin sensor-tip molding
  • Quick response time for responsive, accurate temperature measurement

Applications

Ablation catheters (radiofrequency, cryoablation, laser)Esophageal temperature monitoring systemsMulti-point thermal sensor attachment to catheters in developmentCardiac electrophysiology proceduresMinimally invasive surgical guidance

Specifications

Thermocouple TypesType-T (Copper-Constantan), Type-K (Chromel-Alumel)
Conductor Size RangeAWG 38–50
Minimum Conductor O.D. (AWG#50)0.025 mm
Insulation MaterialsPU, PAI, PI, PFA (with PA adhesive layer options)
Type-T Tolerance±0.5°C (JIS C 1602 Class 1)
Type-K Tolerance±1.5°C (JIS C 1602 Class 1)
Wall Thickness0.005 mm (PU/PAI/PI/PFA standard)

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Product information sourced from:

View on Junkosha Website