This part is a kind of semiconductor called C4115S.
Function of this product has 2SC4115S.
Manufacturers : Jiangsu Changjiang Electronics
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2SC4115S Transistors Low Frequency Transistor (20V, 3A) 2SC4115S zFeatures 1) Low VCE(sat). VCE(sat) = 0.2V(Typ.) （IC / IB = 2A / 0.1A） 2) Excellent current gain characteristics. 3) Complements the 2SA1585S. zExternal dimensions (Unit : mm) 2SC4115S 4±0.2 2±0.2 3±0.2 (15Min.) 0.15 0.45+ −0.05 zStructure Epitaxial planar type NPN silicon transistor 3Min. 0.4 2.5 + −0.1 5 0.5 0.15 0.45 + −0.05 (1) (2) (3) ROHM : SPT EIAJ : SC-72 (1) Emitter (2) Collector (3) Base ∗ Denotes hFE zAbsolute maximum ratings (Ta=25°C) Parameter Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector power dissipation Junction temperature Storage temperature Symbol VCBO VCEO VEBO IC PC Tj Tstg Limits 40 20 6 2 5 0.4 150 �� [ ... ]