{"id":4818,"date":"2026-04-07T14:51:49","date_gmt":"2026-04-07T06:51:49","guid":{"rendered":"https:\/\/txjpcba.com\/?p=4818"},"modified":"2026-04-07T14:51:49","modified_gmt":"2026-04-07T06:51:49","slug":"%d9%85%d8%a7-%d9%87%d9%8a-%d9%85%d9%82%d8%a7%d9%88%d9%85%d8%a9-%d8%a7%d9%84%d8%b9%d8%b2%d9%84-%d9%81%d9%8a-%d8%a7%d9%84%d8%b7%d9%84%d8%a7%d8%a1","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/ar\/%d9%85%d8%a7-%d9%87%d9%8a-%d9%85%d9%82%d8%a7%d9%88%d9%85%d8%a9-%d8%a7%d9%84%d8%b9%d8%b2%d9%84-%d9%81%d9%8a-%d8%a7%d9%84%d8%b7%d9%84%d8%a7%d8%a1\/","title":{"rendered":"\u0645\u0627 \u0647\u064a \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0627\u0644\u0637\u0644\u0627\u0621\u061f"},"content":{"rendered":"

Insulation resistance in coating<\/h3>\n

Insulation resistance<\/strong> in Coating<\/strong> refers to the coating\u2019s ability to resist the flow of electrical current across its surface or through its thickness<\/strong>. It is a key parameter in evaluating how well a coating prevents leakage currents and maintains electrical isolation in PCB Assembly<\/strong>, Prototype PCB Assembly<\/strong>, and SMT Assembly<\/strong>.<\/p>\n

\"What
What is insulation resistance in coating<\/figcaption><\/figure>\n

Insulation resistance is typically measured in ohms (\u03a9)<\/strong>, often expressed as megaohms (M\u03a9) or gigaohms (G\u03a9). A higher insulation resistance value indicates better insulating performance, meaning the coating is more effective at preventing unintended current flow between conductive parts of a circuit.<\/p>\n

In practical applications, when a Conformal Coating<\/strong><\/a> is applied to a PCB, it forms a protective insulating layer over traces, pads, and components. This layer helps reduce leakage currents<\/strong>, especially in environments with high humidity, dust, or contamination. Without sufficient insulation resistance, moisture or ionic residues can create conductive paths, leading to malfunction or failure.<\/p>\n

In SMT Assembly<\/strong><\/a>, where components are densely packed and spacing is minimal, high insulation resistance is especially important. Even small leakage currents can interfere with signal integrity or cause short circuits. A reliable coating ensures stable electrical performance over time.<\/p>\n

Different coating materials offer varying insulation resistance levels:<\/p>\n