This part is a kind of semiconductor called 10K3MBD1.

Function of this product has Interchangeable mini-BetaCURVE Probe.

Manufacturers : BetaTHERM

Image and pinout :

Some of the text within the PDF file :

BetaTHERM Sensors Photo? Interchangeable mini-BetaCURVE Probe Interchangeable mini-BetaCURVE Probe: Applications: ¥ Reduced size allows localized temperature sensing. ¥ Small Medical probes. ¥ Micro-flow sensing. ¥ Aerospace temperature sensing. Thermistor Configuration 5.08mm Nominal (0.200") 50.8mm Nominal (2.0") 6.35mm (0.25") 1.01mm Dia. Typ. (0.04") 30 AWG Solid Silver Epoxy Filled Polyimide Tube (0.002" wall thickness) Plated Copper with Black Kynar Insulation Sample Part Number: 10K 3 MBD 1 Tolerance Code @ 25oC mini-BetaCURVE Probe Material Curve # Resistance Value @ 25oC Features: ¥ Rapid Time Constant (400 milliseconds in liquids). ¥ Standards supplied with +/-0.2oC tolerance (0 to 70oC). ¥ Other tolerances available. ¥ 0.5 mW/oC typ. Dissipation Consta [ ... ]

10K3MBD1 PDF Datasheet Download