STMicroelectronics M48T58Y-70MH1 SRAM Chip from China
ST's M48T58Y is a 64Kb TIMEKEEPER SRAM with integrated RTC and automatic battery backup for non-volatile operation. Though functionally non-volatile, classified under HTS 8542.32.0041 as static read-write RAM IC. Essential for embedded systems requiring time-stamped data retention.
Duty Rate — China → United States
50%
Rate breakdown
9903.91.0550%Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Declare battery integration status; lithium content may trigger additional hazmat documentation
• Provide functional block diagrams showing SRAM core to distinguish from standalone RTCs
• Ensure temperature range specifications match datasheet for industrial vs commercial grade clearance