Read Chip Resistor

Smd resistor stands for surface mount device taken out from smt surface mount technology resistor. Reading a resistors tolerance.

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1st value 2nd value multiplier 3 9 1 390 ohm resistor 2 7 0 27 ohm resistor 2 3 3 23000 ohm or 23k ohm resistor there are some resistors which have 4 digits.

Read chip resistor. The formula for breaking the code down is as follows. Read the bands from left to right. Position the resistor with this band on the right side and again read your resistor from left to right.

The term package refers to the size shape andor lead configuration of an electronic component. The colors seen could be any of the following. An smd resistor with a marking of 0 00 000 or 0000 is a jumper a zero ohm link.

A chip resistor marked with the standard 3 digit code and a short bar below the marking denotes a precision 1 or less resistor with a value taken from the e24 series these values are usually reserved for 5 resistors. For instance an ic chip that is has leads in two rows down opposite sides of the chip is called a dual inline package dip chip. With that knowledge realize that on a four band resistor the third color will always be blue 106 or less and on a five band resistor the fourth color will always be green 105 or less.

In smd resistors resistor package designators tell the length and width of the resistor. Refer to the preceding figure for the color code for the tolerance of a resistor. Position the resistor with the gold or silver color band to the right.

These tiny chips are marked with three 3 or four 4 digit codes which is called smd resistor codes to indicate their resistance values. Black brown red orange yellow green blue violet gray and white. Basic resistor values range from 01 ohm to 10 megaohms.

To figure out how far off from the nominal value the actual resistance could be you look at the fourth band on a standard resistor or the fifth band on a precision resistor. Read the color sequence that must be decoded to determine resistance.

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