Ali, Ishpa;
Xue, Fei;
Henriquez, Carlos Perez;
Niederhoffer, Thomas;
Idil, Ahmad Shah;
Jiang, Dai;
Lancashire, Henry T;
(2024)
Initial Life Test of Silicone Encapsulated FR4 Printed Circuit Boards for Pre-Clinical Active Implants.
In:
2023 24th European Microelectronics and Packaging Conference & Exhibition (EMPC).
IEEE: Cambridge, UK.
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Abstract
Silicone encapsulated FR4 printed circuit boards may provide a rapid solution for protecting pre-clinical prototype implant electronics. Interdigitated electrodes (IDEs) with and without solder coating were manufactured on Cu-F R4 laminates and silicone encapsulated (N=14) . IDEs were aged in saline and change in impedance was measured. Solder coated IDEs had stable 1 kHz impedances throughout the aging period with promising lifetimes for pre-elinical prototypes. A single uncoated IDE failed with a fall in impedance and verdigris. Other uncoated IDEs showed increasing impedance and dark copper(II) oxide. Failures attributable to contaminants and moisture ingress are under investigation.
| Type: | Proceedings paper |
|---|---|
| Title: | Initial Life Test of Silicone Encapsulated FR4 Printed Circuit Boards for Pre-Clinical Active Implants |
| Event: | 2023 24th European Microelectronics and Packaging Conference & Exhibition (EMPC) |
| Dates: | 11 Sep 2023 - 14 Sep 2023 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.23919/empc55870.2023.10418379 |
| Publisher version: | http://dx.doi.org/10.23919/empc55870.2023.10418379 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Printed circuits , Prototypes , Moisture , Implants , Aging , Pollution measurement , Impedance |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10187127 |
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