Tamper-proof electronic packages with two-phase dielectric fluid

A tamper-proof electronic package comprising:

• at least one electronic component;
• an enclosure enclosing, at least in part, the at least one electronic component within a secure volume;
• a two-phase dielectric fluid within the secure volume, the two-phase dielectric fluid comprising liquid dielectric fluid and vapor dielectric fluid within the secure volume, and the two-phase dielectric fluid being at an established saturation line of the two-phase dielectric fluid within the secure volume;
• and
• a tamper-respondent detector to monitor, at least in part, temperature and pressure of the two-phase dielectric fluid and determine therefrom a current pressure temperature relationship, wherein in operation, the current pressure temperature relationship of the two-phase dielectric fluid deviates from the established saturation line of the two-phase dielectric fluid within the secure volume with an intrusion event into the secure volume, and the tamper-respondent detector detects, from the monitoring of the temperature and pressure of the two-phase dielectric fluid and the determining of the current pressure temperature relationship, deviation from the established saturation line, and thereby the intrusion event.

A method of fabricating a tamper-proof electronic package, the method comprising:

• providing an enclosure enclosing, at least in part, at least one electronic component within a secure volume;
• providing a two-phase dielectric fluid within the secure volume, the two-phase dielectric fluid comprising liquid dielectric fluid and vapor dielectric fluid within the secure volume, and the two-phase dielectric fluid being at an established saturation line of the two-phase dielectric fluid within the secure volume;
• and
• providing a tamper-respondent detector to monitor, at least in part, temperature and pressure of the two-phase dielectric fluid and determine therefrom a current pressure temperature relationship, wherein in operation, the current pressure temperature relationship of the two-phase dielectric fluid deviates from the established saturation line of the two-phase dielectric fluid within the secure volume with an intrusion event into the secure volume, and the tamper-respondent detector detects, from the monitoring of the temperature and pressure of the two-phase dielectric fluid and the determining of the current pressure temperature relationship, deviation from the established saturation line, and thereby the intrusion event.