Why is tin with 97% purity considered pure tin?

In the field of metallic materials, the definition of "pure" often varies depending on the application scenario. For tin, the widespread acceptance of 97% purity as "pure tin" stems both from the industry's balancing act between performance and cost.

How to Properly Reheat and Stir Lead-Free Solder Paste?

Properly reheating and mixing lead-free solder paste is a critical step in ensuring soldering quality, requiring attention to uniformity while preventing oxidation and bubble formation. Below are detailed steps and precautions:

How to Select the Right Solder Paste for COB Packaging?

Selecting the right solder paste for COB packaging requires comprehensive consideration of chip size, packaging process, reliability requirements, and cost. As a specialized manufacturer in microelectronic packaging materials.

Comparison of Advantages and Disadvantages Between ACF (Conductive Adhesive) and Solder Paste in Micro-Assembly

In the field of micro-assembly, ACF (conductive adhesive) and solder paste serve as two core interconnect materials. Their comparative advantages and disadvantages must be comprehensively analyzed across dimensions such as electrical conductivity, process adaptability.

Introduction to the PCB Immersion Deposition Tin

The Immersion Deposition Tin process is a plating-free process for depositing tin on copper surfaces. It works by using copper and tin in an acid solution where the active tin is higher than copper, so that the pad copper foil reacts with the tin ions in the sink and the tin is oxidised and a unifor

Common PCB solderability inspection methods

PCB solderability inspection method refers to the use of certain methods and standards to evaluate the solderability of the pads or components on the PCB, that is, the wettability and interfacial reactivity between the solder and the solder.

The Solder Joint Void Caused by Electroplating Impurity

Voids are usually observed during reflow soldering, which is generally considered to be one of the reasons for weakening the thermal conductivity and mechanical strength of solder joints. When analyzing the cause of void formation, we can easily associate it with flux.

Pad surface treatment in microelectronics and semiconductor packaging

In microelectronics and semiconductor packaging, the most basic purpose of pad surface treatment is to ensure good solderability and conductivity of the pads. Since copper tends to exist as oxide in air and is unlikely to remain as pristine copper for long, other treatments are required for copper.