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PC Board Mountable Corrosion Sensors

Sandia National Laboratories

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Publications:

PDF Document PublicationMarket Sheet (1,115 KB)

PC-mount corrosion sensors of various serpentine widths. Capacitive sensor shown on far right.
PC-mount corrosion sensors of various serpentine widths. Capacitive sensor shown on far right.

A line of corrosion sensors of various widths and thicknesses soldered to a PC board.
A line of corrosion sensors of various widths and thicknesses soldered to a PC board.

Sensor after exposure to corrosive environment.
Sensor after exposure to corrosive environment.

Technology Marketing Summary

Sandia National Laboratories has created sensors to identify and assess the pervasive and expensive problem of corrosion in applications ranging from construction to microelectronics.

Description

Sandia’s micro sensors are designed and fabricated in the style of standard surface mount components (such as resistors and capacitors), which can be soldered directly onto networks such as printed circuit boards (PCBs). This allows easy integration with support electronics via standard assembly processes in a very small footprint. Corrosive environments passively and proportionately modify a sensor’s response over time allowing periodic interrogation to provide information on the enclosed systems. Sensors can be packaged with a high density for redundancy, designed for a wide range of sensitivity, and strategically located for multiple sensing tasks. The sensors are produced by the hundreds per wafer using standard industry methods resulting in low per unit costs. To date, sensors have been designed for corrosion assessment of copper, aluminum and wire bonded chips. Many other interrogation systems are possible.

Benefits
  • Accumulates corrosion effects passively: power needed only when interrogating
  • Designed and fabricated in the style of standard surface mount components which can be directly soldered onto networks such as printed circuit boards (PCBs)
  • Sensors can be packaged with a high density for redundancy, designed for a wide range of sensitivity and strategically located for multiple sensing tasks
  • Produced using standard industry methods
  • Low per unit cost– 600 sensors from a single 4" wafer

Sandia

Applications and Industries
  • Building Ventilation Systems
  • First Responder Respirators
  • Household Electronics
  • High Consequence Systems
  • Water Monitoring Systems
  • Architectural Structures
  • Automotive Systems
  • Space Systems
  • Environmental Change Indicators
  • Remote-based Systems
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 9,291,543
Patent
9,291,543
PC board mount corrosion sensitive sensor
The present invention relates to surface mount structures including a capacitive element or a resistive element, where the element has a property that is responsive to an environmental condition. In particular examples, the structure can be optionally coupled to a printed circuit board. Other apparatuses, surface mountable structures, and methods of use are described herein.
Sandia National Laboratories 03/22/2016
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
SD #11831Development - Sandia estimates this technology to have a technology readiness level of 6-7. Key elements of this technology have been demonstrated in representative configurations in high fidelity laboratory controlled environments.Available10/14/201310/14/2013

Contact SNL About This Technology

To: Technology Inquiries<ip@sandia.gov>