This part is a kind of semiconductor called SCK255R0x.

Function of this product has Power Thermistor.

Manufacturers : Thinking Electronic

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr NTC Thermistor：SCK Series Power Thermistor for Limiting Inrush Current Features 1. 2. 3. 4. 5. 6. 7. RoHS & HF compliant Body size: Ф5mm ~ Ф 30mm Radial lead resin coated High power rating Wide resistance range Cost effective Operating temperature range： Φ5mm：-40~+150℃ Φ8~Φ10mm：-40~+170℃ Φ13mm~Φ30mm：-40~+200℃ 8. Agency recognition: UL /cUL/TUV /CSA/CQC Recommended Applications 1. Switch mode power supply 2. Electric motor 3. Transformer 4. Adapter 5. Projector 6. Halogen lamp Part Number Code Ф 5mm~ Ф 15mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Product Type THINKING SCK NTC Thermistor SCK Series Body Size 05 Ф 5mm 08 Ф 8mm 10 Ф 10mm 13 Ф 13mm 15 Ф 15mm Zero Power Resistance at 25℃ (R25) 0R5 2R5 08 20 120 0.5Ω 2.5Ω [ ... ]

SCK255R0x PDF Datasheet Download