Columnar resistor and method of laser trimming for manufacturing the same

A method of laser trimming for manufacturing a columnar resistor, comprising:

• forming a resistance layer on a surface of a columnar substrate, wherein the resistance layer comprises a resistance determining region, a first resistance adjustment region, and a second resistance adjustment region;
• forming a metal layer at both ends of the columnar substrate, and the metal layer being connected to the resistance layer to form two electrodes;
• performing a first laser-trimming on the resistance determining region to form a first trimming line and achieve a first resistance value;
• and
• performing a second laser-trimming on the first resistance adjustment region to form a second trimming line and achieve a second resistance value, wherein the second resistance value is greater than 0.1% to 1% of the first resistance value;
• wherein an interval distance between the first trimming line and the second trimming line is equal to or greater than an interval distance between the adjacent first trimming lines.