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AN1163: Determination of Anions on the Surface of Printed Circuit Boards by IPC-TM-650 Method 2.3.28 using HPIC
Description
Ion 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. The addendum shows alternative methods with their benefits and limitations.| Market: | Environmental |
| Keywords: | Dionex ICS-5000+ System, Electronic components, Formate, Malate, Methanol, PCB, HPIC, inorganic anions, Succinate, Phthalate, RFIC, electronics, phosphate, Acetate, Suppressed Conductivity, adipate, Reagent-Free IC, methanesulfonate, Dionex IonPac AS11-HC-4 µm column, Printed Circuit Boards (PCBs), IPC-TM- 650 Method 2.3.28, Weak Organic Acids (WOAs), ICS-6000, AN 1163, AN1163, methanol-hydroxide eluent, PWB |
| Matrix: | 75/25 (+/- 5%) v/v IPA/H20 solution |
| Author: | Beibei Huang; Terri Christison; Jeffrey Rohrer |
| Affiliation: | Thermo Fisher Scientific, Sunnyvale CA |
