Laser Trimming Applications

Laser trimming of electronic circuits is an alternative method of tuning or adjusting circuit parameters. Fine resistor tolerances  cannot be achieved by using thick film printing technologies, so the resistor values are adjusted by laser; the resistance is increased by cutting into the resistive paste. Surface mount resistors and capacitors can be adjusted in a similar way. In some circuits the performance of the device cannot be determined just by design, collective tolerances means that some adjustment has to be made to the circuit to get it to perform correctly; a good example of this is the zero offset of an amplifier or sensor. This can be adjusted by using select-on-test resistors, potentiometers or laser trimming. The latter is the most precise, fastest and most economical method unless dealing with very low volumes.

hybrid circuits

sensor

proximity switch

pressure sensors

power supply

oscillator

current sensor

Industrial laser systems for trimming resistors, capacitors, hybrid and other electronic circuits