SMD marking

3 digits: 472 = 47×10² = 4.7k. 4 digits: 4702 = 47k. EIA-96 (1% resistors): digits = value code, letter = multiplier (A=×1, B=×10, C=×100, D=×1k). R in code = decimal point (4R7 = 4.7 Ω).