A kind of lead frame and its manufacturing method

Abstract

The invention discloses a lead frame, which comprises a frame made of plastic and a connecting bar, the connecting bar connects two opposite sides of the frame, and a pin made of copper is arranged in the connecting bar, and the pin is One end of the pin protrudes from the connecting strip, and the front end of the pin is provided with a contact piece. In the present invention, each pin is independent, so after the lead wire is made into a rectifier bridge, no internal stress will be generated, and after the lead wire is made into a finished product, the frame and connecting strip do not need to be cut, and can be directly used as a part of the finished product package , when we need to use it, we only need to pull the pin out from the connection strip.

Description

technical field [0001] The present invention relates to an electronic device, more specifically, to a lead frame and a manufacturing method thereof. Background technique [0002] Rectifier bridges are now mass-produced, and copper frames are used in mass production. This frame is made of a piece of copper by stamping out excess parts. [0003] In the process of processing the rectifier bridge, high-temperature packaging steps are required. For metals such as copper, thermal expansion and contraction vary greatly. The entire frame is stamped from a piece of copper, and the overall deformation has a great impact on each monomer. After cooling, the internal stress of each monomer is very large, which also causes poor consistency of the product and is prone to failure. [0004] Moreover, for customers, after completing the packaging of the rectifier bridge, they need to cut off the frame and connecting strips before using it, which is also very troublesome, and after cutting, t...

AI Technical Summary

Problems solved by technology

[0003] In the process of processing the rectifier bridge, high-temperature packaging steps are required. For metals such as copper, thermal expansion and contraction vary greatly. The entire frame is stamped from a piece of copper, and the overall deformation has a great impact on each monomer. After cooling, the internal stress of each monomer is very large, which also causes poor consistency of the product and is prone to failure

[0004] Moreover, for customers, after completing the packaging of the rectifier bridge, they need to cut off the frame and connecting strips before using it, which is also very troublesome, and after cutting, the obtained rectifier bridge units are scattered, and special The equipment can only be packaged and shipped after finishing, so it is necessary to improve

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