What is the resistance value of a surface-mount resistor marked '472' according to SMD resistor code conventions?
4700 ohms
To determine the resistance value of a surface-mount resistor marked '472' according to the SMD resistor code conventions, we need to understand how the code works:
- The first two digits, '47' in this case, represent the significant figures of the resistance value. This gives us 47.
- The third digit, '2', represents the number of zeros to add to the first two digits. So, we add two zeros to 47, making it 4700.
According to the SMD resistor code, '472' translates to a resistance value of \(4700\,\Omega\), which is equivalent to 4.7 kilo-ohms (kΩ).
Among the given options, the correct answer is:
- 4700 ohms
Let's briefly go over why the other options are not correct:
- 470 ohms: This would correspond to a marking of '471', not '472'.
- 4.7 ohms: This would correspond to a marking of '470', not '472'.
- 47000 ohms: This would correspond to a marking of '473', not '472'.
Therefore, based on the SMD resistor coding system, the answer is correctly identified as 4700 ohms.
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