IEC 62899-202-6:2020 PDF

Overview

IEC 62899-202-6:2020 is an international standard in the Printed Electronics series that defines an in‑situ measurement method for resistance changes of a printed conductive layer on a flexible substrate when exposed to high temperature and humidity. It specifies sample shapes, environmental test conditions, measurement jigs (two‑wire and four‑wire), and data reporting requirements to evaluate environmental stability of conductive inks and printed conductive films.

Key Topics and Requirements

• Scope and purpose
  • Method to measure resistance change of conductive layers made by printing methods on flexible substrates under controlled temperature and humidity.
• Test samples
  • Recommended rectangular samples with a long:short ratio ≥ 20 (example size: 200 mm × 10 mm). Dimensional tolerance ±5%.
• Environmental test conditions
  • Standard humidity/temperature condition: 85 °C ±2 °C and 85 % RH ±5 % (unless otherwise specified).
  • High temperature testing generally at 120 °C ±2 °C, but limited to 15 °C below the substrate glass transition temperature (Tg) if Tg