What is the precision chip resistor? Is that the error precision chip resistor SMD resistor is relatively small is generally called the error of 1% chip resistors, the minimum error (accuracy) can reach 0.01% DEG C to + 5ppm/ low temperature coefficient, the industry is rarely done: it can be used in precision instruments, communications electronics and portable electronic products.

So, a lot of people would ask, chip resistance is so small, if not tested 5% and 1% can distinguish it?

Good question, so what are the differences between the 5% and 1% patch resistors?.

The 5% series resistor with 3 digit said: This represents a valid digital representation method the resistance value of the top two, third digit number in the numbers behind should add "0". When the resistance is less than 10, with R said in the code the resistance value of the decimal point position, this kind of representation law is often resistance error of 5% resistance in the series. For example: 330 said 33, rather than 330 ohm; 221 220 ohm; 683 said that 68000 68K; 105 1M 6R2 said; 6.2.

The 1% series of precision SMD resistors are represented by 4 digit numbers: the first 3 digits of this representation represent the effective numbers of the resistance values, and the fourth bits indicate the number of 0 to be added after the valid number. When the resistance is less than 10, the code is still represented by R resistance value of the decimal point position, this method has general resistance error of 1% precision resistor series. For example: 0100 said 10 instead of 100; 1000 said 100 instead of 1000; 4992 said that 49900, 49.9k; 1473 said that 147k 0R56 147000 Omega Omega 0.56 Omega said.

SMD resistors are engraved on the surface of the letter, if only three digits, then the error is 5%, and if there are 4 digits, then it is 1% of the error.

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