This part is a kind of semiconductor called JVR-20N241K.

Function of this product has METAL OXIDE VARISTOR.

Manufacturers : RFE

Image and pinout :

Some of the text within the PDF file :

METAL OXIDE VARISTOR 20mm Disc Part Maximum Varistor Maximum Withstanding Rated Energy Typical UL CSA VDE Number Allowable Voltage Clamping Surge Current Wattage 10/1000 Capaci- Voltage (V 0.1mA) Voltage µs tance ACrms DC Tolerance V 5A 1Time 2 Times 1 KHz (V) (V) (V) Range (V) (A) (A) (W) (J) (pF) JVR-20N180M 11 14 18 14 - 22 • 36 2000 1000 0.2 7.0 16900 JVR-20N220M 14 18 22 18 - 26 • 43 2000 1000 0.2 8.0 14400 JVR-20N270M 17 22 27 22 - 32 • 53 2000 1000 0.2 10.0 14100 JVR-20N330M 20 26 33 27 - 39 JVR-20N390L 25 31 39 34 - 44 JVR-20N470L 30 38 47 40 - 54 JVR-20N560L 35 45 56 48 - 64 JVR-20N680L 40 56 68 58 - 78 JVR-20N820K 50 65 82 74 - 90 • 65 2000 1000 0.2 12.0 13400 • 77 2000 1000 0.2 14.0 11950 • 93 2000 1000 0.2 17.0 11700 • 110 2000 1000 0. [ ... ]

JVR-20N241K PDF Datasheet Download