SN0903049 SUDUM SMC Reset Controller IC

The SN0903049 SUDUM is a System Management Controller (SMC) reset power IC used in Apple MacBook logic boards. It ensures that essential power rails such as PP3V42_G3H are fully stabilized before enabling the SMC to power up the system. If this IC fails, the laptop may show no power / no fan spin / no charging light issues. Commonly found on MacBook Air and Pro logic boards, this IC is essential for restoring proper power-on functionality. It comes in a compact QFN-8 / DFN-8 package, typically marked R33V or SUDM, and located near SMC reset circuits on the board.

• Product Name: SN0903049 SMC Reset Controller IC
• Markings on IC: R33V / SUDM
• Location on Board: U5010 (varies by model)
• Manufacturer: OEM (MacBook PMIC series)
• Package Type: QFN-8 / DFN-8
• Application: MacBook SMC reset power sequencing
• Compatible MacBook Models:
• A1369, A1370, A1398, A1425, A1465, A1466, A1502 and others
• Stock: Ready Stock in Nehru Place, Delhi
• Condition: New & Properly Packed
• Warranty: Testing Warranty
• Quality: Quality tested by OKSpare