AN1163: Determination of Anions on the Surface of Printed Circuit Boards by IPC-TM-650 Method 2.3.28 using HPIC
DescriptionIon chromatography (IC) has become an important technique for the evaluation of ionic cleanliness. This application note describes an IC method using a Thermo Scientific™ Dionex™ IonPac™ AS11-HC-4μm column and a Thermo Scientific™ Dionex™ ICS-5000+ HPIC system to determine extractable anionic contaminants on the surface of PCBs, including inorganic anions and weak organic acids (WOAs) following the extraction procedure described in IPC-TM-650 Method 2.3.28. An ICS-6000 can be used for this application.
|Keywords:||Dionex ICS-5000+ System, Electronic components, HPIC, inorganic anions, electronics, Suppressed Conductivity, Dionex IonPac AS11-HC-4 µm column, Printed Circuit Boards (PCBs), IPC-TM- 650 Method 2.3.28, Weak Organic Acids (WOAs), ICS-6000|
|Matrix:||75/25 (+/- 5%) v/v IPA/H20 solution|
|Author:||Beibei Huang; Jeffrey Rohrer|
|Affiliation:||Thermo Fisher Scientific, Sunnyvale CA|