no, it's 15nF. the OP needs 0.015uF. usually 0.015 with no other information (the "M" on the OP's cap from the store is the temperature coefficient) means 0.015uf. microfarads are assumed, unless the caps are very small, in which case, picofarads are assumed. caps newer than about the year 2000 will be marked with a 3 digit code, such as 153. you have two significant digits and a multiplier. 153 would be the correct code for the value of cap the OP is looking for.