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Thermal Conductive Potting Compound: Wrong Selection Causes Bulging & Cracking? Power Module Heat Dissipation & Protection Selection Guide — Master Key Decisions of Thermal Conductivity, Insulation and Stress Balance From Core Parameters to Practical Application

2026-08-04 22:35:01

Selecting products solely based on thermal conductivity while ignoring colloid stress and substrate compatibility is the primary cause of bulging, cracking and insulation failure in power module potting. This article systematically breaks down the core parameters of thermal conductive potting compounds, including thermal conductivity, hardness‑stress property, dielectric strength, temperature resistance range and curing conditions. It defines the application boundaries between silicone systems (low stress, wide temperature resistance) and epoxy systems (high rigidity, high adhesion). Combined with typical scenarios such as industrial power supplies, energy‑storage BMS, LED drivers and automotive electronics, it corrects four frequent misconceptions: "higher thermal conductivity equals better performance", "arbitrary replacement between silicone and epoxy", "neglect of air bubbles and substrate compatibility". Supported by a practical case where the temperature‑cycle failure rate of outdoor power modules dropped significantly after switching from epoxy to silicone, it verifies that stress matching is more critical than thermal conductivity under large‑temperature‑difference working conditions. A scenario‑based selection guide is provided at the end to help engineers quickly identify suitable solutions and avoid mass‑production risks from the source....

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What is the Function of PCB Conformal Coating? Essential Protection Process & Selection Guide for Industrial Control Mainboards

2026-08-02 22:52:07

Conformal coating is a polymer protective film applied on the surface of PCBA circuit boards. Its core functions include moisture resistance, mold resistance and salt spray resistance. It also provides comprehensive protection against dust, acid & alkali corrosion, electrochemical migration and delivers dielectric withstand voltage performance. It forms a dense, transparent insulating film over components and circuit traces to fundamentally eliminate mass failures such as circuit board leakage caused by moisture, copper foil oxidation and signal drift. It is a fundamental mass-production process for industrial control, new energy and outdoor electronic equipment to extend service life and reduce after-sales rework rates. Select acrylic, polyurethane or silicone conformal coating according to working conditions. Standardize construction procedures including thin uniform coating and precise masking....

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Thermal Gel vs Thermal Grease Comparison | Material Selection Guide for Heat Dissipation of Power Supply & PCB Electronic Modules

2026-08-01 21:47:22

This article addresses the heat dissipation requirements of new energy power supplies, inverters, charging piles and industrial control PCB modules, and compares the core differences between thermal grease and thermal gel. Thermal grease is a paste fluid with low cost and easy application, yet prone to oil bleeding, suitable for open environments with small flat gaps. Thermal gel is a semi-solid elastomer featuring low oil bleeding and vibration resistance, which adapts to height differences between electronic components and sealed long-life modules. The article sorts out common selection misunderstandings regarding thermal conductivity selection, oil bleeding risks and hardness misconceptions. It provides standardized selection suggestions based on working conditions and reliability requirements, helping electronics manufacturers select materials reasonably and reduce product rework rates....

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What is Thermal Grease? Detailed Features of Thermal Grease for Electronic Power Industry

2026-07-31 15:04:12

hermal grease is an important thermal interface material for energy storage, charging piles and photovoltaic inverters. This article introduces the principle and application scenarios of thermal grease, sorts out common procurement misunderstandings, and shares the application scheme of Kimidun TG-P300 thermal grease in industrial power supply equipment....

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