Tridentent is a manufacturing process that uses a laser to change the operating parameters of digital circuits. Laser Trimmed Laser Trimmer
Fluke Precision Skinny Movie Resistor Used by the community. Ceramic subsidy with airtight glass cover. Laser trim marks are found on the inside of the
gray resistive material. One of the most common applications is using lasers to burn away small parts in resistors, increasing the cost of resistors. The burn-in laser trimming process can be performed while the circuit is inspected by a computerized tester, resulting in the most favorable final resistance values in the circuit. The resistance value of a film resistor is defined by its geometric dimension
and the resistor fabric.
Lateral laser reduction of resistance tissue narrows or lengthens the float path of the blade and increases resistance. The same effect is achieved whether the laser aligns thick-film or thin-film resistors on ceramic substrates. Passive trimming is the adjustment of resistance to a particular price. When the trim adjusts the output of the entire circuit, including the output voltage, frequency, or switching thresholds, it is called energetic trimming. During the trimming process, relevant parameters are continuously measured and compared to programmed target costs. The laser will periodically shut off when the cost reaches the nominal price. Trimming ltcc resistors in a strain chamber One type of his
passive trimmer uses a compression chamber to allow trimming of resistors in one pass. The LTCC board is contacted with test probes on the component side and trimmed with a laser beam from the resistor side. This trimming approach does not require a contact factor between the resistors, as the fine pitch adapter contacts the element opposite the trimming. Therefore, ltcc can be deployed more compactly and cheaply. It is much easier to replace the
potentiometer or SOT device with a trimmable chip resistor or chip capacitor, and the potentiometer adjustment driver is changed to laser trimming. The precision with which it is performed is higher, the method is computerized, the long-term stability is higher than potentiometers, and it is at least as accurate as Sot additives. Lasers can be routinely integrated into current size systems through manufacturers for active trimming.click here
