9e102 Datasheet

most commonly refers to the Rohm Semiconductor BD9E102FJ , a synchronous buck switching regulator. Technical Specifications

: It features built-in power MOSFETs with low on-resistance (typically 250 mΩ for the high-side), which minimizes energy loss and eliminates the need for an external diode. 9e102 datasheet

Without the full datasheet suffix, assume ±10% (K tolerance). If the original marking includes a letter after 102 (e.g., "9E102K"), the K indicates ±10%. J = ±5%, M = ±20%. most commonly refers to the Rohm Semiconductor BD9E102FJ