Sensitron Unveils 450kW Shield for Critical Aerospace Electronics

HAUPPAUGE, NY – April 21, 2026 – By Christine Carter

Sensitron Semiconductor, a veteran in high-reliability electronics, today announced the launch of a powerful new defense for the sensitive digital nervous systems of modern aircraft and military vehicles. The SCP-5282-300-450-3, a compact transient voltage suppression (TVS) module, is engineered to absorb a massive 450-kilowatt electrical surge, providing a robust shield for the three-phase 115VAC systems that power mission-critical equipment.

This introduction comes at a time when the need for such protection has never been more acute. In an era of advanced avionics and fly-by-wire controls, an unexpected voltage spike from a lightning strike or power system fault is not merely an inconvenience—it's a potential catastrophe. Sensitron's new module is designed to be the silent sentinel that prevents such events, safeguarding everything from next-generation fighter jets to commercial airliners.

The Growing Electrical Threat in Modern Skies

The skies are becoming a more electrically hostile environment for aircraft. The industry's shift toward lighter, more fuel-efficient airframes made from carbon composites has introduced a new vulnerability. Unlike traditional all-metal aircraft that create a natural Faraday cage effect to dissipate the energy of a lightning strike around the exterior, composite materials offer less inherent shielding. This leaves the increasingly sophisticated and sensitive electronics inside more exposed to powerful, lightning-induced transients.

This challenge is compounded by the trend toward the "More-Electric Aircraft" (MEA), where hydraulic and pneumatic systems are replaced with lighter, more efficient electrical ones. While this shift brings numerous benefits, it also places immense strain on the aircraft's power grid, increasing the demand for flawless power quality and fault-tolerant architectures. A single aircraft is estimated to be struck by lightning at least once per 1,000 flight hours, and each event unleashes a torrent of energy that must be managed to prevent damage to vital systems.

"Voltage transients on a vehicle can easily cause a catastrophic failure or worse yet, cause today's low voltage state-of-the-art electronics behave erratically," said Joseph Castaldo, Sensitron's Vice President of Sales and Marketing, in the company's announcement. The new module directly addresses this by clamping these dangerous surges to safe levels, with line-to-line voltages kept below 421V peak and line-to-neutral voltages below 253V peak.

Raising the Bar for Surge Protection

Sensitron's SCP-5282-300-450-3 enters the market with a key specification that sets it apart: a 450kW peak pulse power handling capability. This substantial rating appears to significantly exceed the capacity of many discrete TVS components offered by competitors, which often fall in the 15kW to 30kW range. By designing a module capable of absorbing such immense energy, the company provides a single-component solution for applications that might otherwise require complex, multi-component protection schemes.

The bi-directional module ensures comprehensive defense against a wide array of electrical threats, from direct lightning-induced surges to voltage spikes generated by switching large electrical loads within the vehicle itself. This ability to manage high-energy pulses and repeated surge events is critical for maintaining system reliability over the long term, a non-negotiable requirement in military and aerospace applications.

Furthermore, the company emphasizes the product's industry-leading weight-to-protection ratio. In aerospace design, every gram is critical. The module’s low-profile, flange-mounted package is engineered for minimal size and weight, allowing it to be mounted directly to an interior surface without imposing significant penalties on the aircraft's overall design—a crucial factor in optimizing Size, Weight, and Power (SWaP).

Navigating a Maze of Stringent Standards

For defense and aerospace contractors, a product's true value is measured by its compliance with a litany of exacting standards. Sensitron highlights that the new TVS module is compliant with MIL-STD-704, MIL-STD-1399, and, most notably, DO-160 Level 5. These designations are far more than just acronyms; they represent the highest benchmarks for reliability and safety in extreme operational environments.

• MIL-STD-704 defines the required power quality characteristics for aircraft electrical systems, ensuring that any component can operate reliably under normal, abnormal, and emergency power conditions.
• MIL-STD-1399 sets the interface standard for shipboard systems, guaranteeing compatibility and resilience for equipment used on naval vessels, another environment prone to severe power fluctuations.
• DO-160, Section 22, Level 5 is the pinnacle of lightning protection standards for airborne equipment. Achieving Level 5 signifies that the equipment can withstand the most severe indirect lightning strike scenarios defined. This standard has become increasingly difficult to meet as composite fuselages reduce natural shielding, making a component's certified compliance a powerful assurance of its protective capabilities.

By engineering the SCP-5282-300-450-3 to meet these stringent requirements, Sensitron has effectively pre-qualified the component for use in the world's most demanding applications, streamlining the design and certification process for its customers.

A Legacy of High-Reliability Engineering

This new product launch is built upon Sensitron's more than 50-year history of supplying high-reliability power electronics to the defense, aerospace, space, and medical markets. The company's manufacturing facilities are certified to the highest industry standards, including AS9100 for aerospace quality management and MIL-PRF-38534 Class K, the benchmark for space-grade microelectronics.

This deep well of engineering expertise and certified manufacturing capability provides the foundation of trust necessary for components destined for mission-critical systems. The SCP-5282-300-450-3 is not just a product of innovative design but also of a rigorous, proven production process that ensures reliability from the silicon wafer to the final packaged module. With the new TVS module now available for sampling, Sensitron is providing engineers with a powerful new tool to enhance the resilience and safety of the next generation of aircraft and defense platforms.