High-power resin-package metal-film surface-mounted resistor

Abstract

The invention relates to the field of electronic elements, and discloses a high-power resin-package metal-film surface-mounted resistor. The high-power resin-package metal-film surface-mounted resistor comprises an insulating rod, the surface of the insulating rod is plated with a surface film, a plurality of grooves for debugging the resistance are cut in the surface of the surface film, end caps are installed at the two ends of the insulating rod, the insulating rod and the end caps are wrapped by resin package shells, and the resin package shells are in cuboid shapes; the end caps extend to form sheet-shaped end electrodes, and the end electrodes extend out of the resin package shells. The invention further discloses a method for preparing the high-power resin-package metal-film surface-mounted resistor. The high-power resin-package metal-film surface-mounted resistor is in surface-mounted-type package design, SMT automatic assembling can be achieved, assembling efficiency is high, manpower resources are saved, and enterprise benefits can be increased.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to a high-power resin packaged metal film chip resistor. Background technique [0002] Resistors are generally directly called resistances in daily life, and they are a current-limiting element. After the resistor is connected to the circuit, it can limit the size of the current passing through the branch it is connected to. There are many types of resistors, the most commonly used are metal film resistors. Metal film resistor is a kind of film resistor. It adopts high-temperature vacuum coating technology to tightly attach nickel-chromium or similar alloys to the surface of ceramic rods to form a film. After cutting and adjusting the resistance value, it can achieve the final required precision resistance. value. Metal film resistors are the most widely used resistors so far. They have high precision, stable performance, simple and light structure, and play an important role ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the field of domestic resistors, metal film resistors are all lead-in plug-in structures, which cannot realize SMT automatic assembly and can only be assembled manually, resulting in low assembly efficiency, wasting human resources, and reducing corporate benefits.

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