SIR 90 day Monitoring of Desiccators

Project Goal

The goal of this project was to assess the SIR resistance of storage conditions.

Background / History / Assembly Material

Two sets of desiccant conditions were to be stored at room temperature in a high humidity area (75% RH as a room with and inline cleaner) and resistance measurements were taken daily on PCB electrodes internal to the sealed enclosure.

Desiccant Samples Suspended in Containers

At the end of 3 months

Post SIR LCR verified Resistance

Silica Electrode to be suspended

Steel Camel post 3 month exposure - No visible dendrites at 5 volts

Silica Gel post 3 month exposure - No visible dendrites at 5 volts

Post 3 months Cleanliness Assessment

Findings