TIL that a 12 inch semiconductor wafer costs $19000 to make and produces around 215000 RFID chips for use in disposable subway tickets. Each chips are around 0.5x0.5 mm in size
TIL that a 12 inch semiconductor wafer costs $19000 to make and produces around 215000 RFID chips for use in disposable subway tickets. Each chips are around 0.5x0.5 mm in size
www.righto.com
Inside the tiny chip that powers Montreal subway tickets
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The original was posted on /r/todayilearned by /u/zahrul3 on 2025-08-20 02:43:38+00:00.