This part is a kind of semiconductor called 10K3MCD1.

Function of this product has Micro-BetaCHIP Thermistor Probe.

Manufacturers : BetaTHERM

Image and pinout :

Some of the text within the PDF file :

BetaTHERM Sensors Photo Thermistor Configuration 3.18mm Nominal (0.125") Custom Lengths 3.18mm (0.125") 0.457mm Dia. Typ. (0.018") 38 AWG Solid Nickel Epoxy Filled Polyimide with Isomid Insulation Tube (0.001" wall thickness) Sample Part Number: 10K 3 MCD 1 Tolerance Code @ 25oC micro-Chip Probe Material Curve # Resistance Value @ 25oC Micro-BetaCHIP Thermistor Probe Micro-BetaCHIP Probe: Applications ¥ Low volume flow sensors (liquids or gases). ¥ Laboratory animal research. ¥ Peltiere (thermal cooler) temperature tracking sensors. ¥ Temperature control for bath showers. ¥ DNA research sensors. ¥ Medical catheters. Features: ¥ Rapid Time Constant (200 milliseconds in liquids). ¥ Custom tolerances available. ¥ 0.3 mW/oC typ. Dissipation Constant in air at 25oC. ¥ [ ... ]

10K3MCD1 PDF Datasheet Download