US 12,543,261 B2 · Solder mask fault fiber optics sensor

Abstract

Aspects of the present disclosure configure a processor to detect faults in a printed circuit board (PCB) solder mask using an optical waveguide. The processor directs an optical beam to an input of one or more optical waveguides embedded in a protective coating layer of a PCB, the protective coating layer being adjacent to one or more traces of the PCB. The processor measures a beam characteristic of the optical beam that is output by the one or more optical waveguides. The processor detects a disruption of the optical beam that is output by the one or more optical waveguides based on the beam characteristic. The processor detects a fault in the protective coating layer of the PCB based on detecting the disruption of the optical beam that is output by the one or more optical waveguides.

Claims14

Dependent claims

A system comprising:

a printed circuit board (PCB) comprising a plurality of layers;
a plurality of traces comprising a first layer of the plurality of layers, the plurality of traces coupling one or more physical components comprising a set of memory components of a memory sub-system to a processing device;
a protective coating comprising a second layer of the plurality of layers, the protective coating being adjacent to the plurality of traces;
one or more optical waveguides embedded in the protective coating, the one or more optical waveguides being configured to enable detection of a fault associated with the protective coating based on disruption of an optical beam passing through the one or more optical waveguides;
and an additional set of optical waveguides embedded in an additional protective coating comprising a third layer of the plurality of layers, wherein the plurality of traces is physically between the second layer and the third layer.

2 more elements

Dependencies are inferred from the claim text.

Solder mask fault fiber optics sensor

Life of this patent

Solder mask fault fiber optics sensor

Life of this patent

Abstract

Claims14