Introduction to the Production Process of Thin Film High Precision Resistors

The production process of thin film high-precision resistors is relatively complex and precise. The following are the main production steps and process characteristics:

1、 Main production steps
Base preparation:

Choose suitable substrate materials, such as ceramic or glass insulation materials. These materials have good insulation properties and stability, and are the basis for making thin film high-precision resistors.
Back electrode printing and sintering:

Print the back electrode on the substrate and perform sintering treatment. The back electrode is usually made of metal or alloy material and is used to connect with circuits.
Resistance printing:

Using precision printing technology to print resistive materials onto a substrate, forming a resistive body. The selection of resistance materials is crucial for the performance of resistors, and common resistance materials include metals, alloys, carbon, etc.
Surface electrode printing and sintering:

Print surface electrodes on the resistor and perform sintering treatment. The surface electrode and the back electrode together form the two ends of the resistor, which is used to connect to the circuit.
Laser Resistance Adjustment:

Fine tune the resistance value through laser resistance adjustment technology to ensure that the resistance value meets the design requirements. Laser resistance adjustment is a high-precision process method that can achieve precise control of resistance values.
Protective layer printing and sintering:

Print a protective layer on the resistor and electrode, and perform sintering treatment. The protective layer is used to protect the resistor and electrodes from external environmental influences, improving the stability and reliability of the resistor.
Cutting and electroplating electrodes:

Cut the resistor to form independent resistance elements. Then, electroplating treatment is carried out on the electrode to improve its conductivity and corrosion resistance.
Testing and Sorting:

Test the completed thin film high-precision resistor to check whether its resistance, accuracy, temperature coefficient and other performance indicators meet the requirements. Then, based on the test results, the resistors are sorted to ensure that the performance of each resistor meets the design requirements.
2、 Process characteristics
high-precision:

The entire production process adopts precision printing technology and laser resistance adjustment technology to ensure the high-precision characteristics of the resistor.
Low temperature coefficient:

By selecting appropriate resistance materials and optimizing production processes, the temperature coefficient of resistors can be reduced, allowing them to maintain stable performance over a wide temperature range.
High stability:

The printing and sintering treatment of the protective layer can improve the stability and reliability of the resistor, making it less prone to failure during long-term use.
Automated production:

The production process of thin film high-precision resistors adopts automated equipment and production lines, which improves production efficiency and product quality.
Environmental Protection and Sustainability:

In the production process, we pay attention to environmental protection and sustainable development, use lead-free and other environmentally friendly materials, and reduce the emission of harmful substances.
In summary, the production process of thin film high-precision resistors has the characteristics of high precision, low temperature coefficient, high stability, automated production, and environmental sustainability. These characteristics make thin film high-precision resistors have broad application prospects and market demand in the electronics industry.