Pyramid Semiconductor Corporation is a fabless manufacturer of semiconductor integrated circuits, including MIL-STD-1750A Processors, Static RAMs, EEPROMs, and FCT/FCT-T Logic. Although they do not fabricate their own wafers, they partner with external wafer foundries in the USA and Taiwan. Their proprietary high-performance semiconductor designs are available in a variety of plastic and hermetic ceramic packages.
Supporting over 100 Standard Military Drawings (SMDs), Pyramid Semiconductor is well-suited for high longevity military applications. The company operates from a 10,000-square-foot facility where it conducts die design, wafer testing, product assembly, environmental testing, electrical testing, burn-in, marking, and quality assurance before delivering products to military, industrial, and commercial customers worldwide. This facility also enables them to develop custom solutions with short lead times.
Headquartered in Sunnyvale, California, Pyramid Semiconductor was established in January 2003 following the acquisition of all product lines from Performance Semiconductor. They continue to support all products previously handled by Performance Semiconductor, maintaining the same part numbering scheme.
On March 8, 2021, HEICO Corporation’s Electronic Technologies Group acquired Pyramid Semiconductor LLC. The company now operates as part of HEICO/3D PLUS USA, located in the Silicon Valley area. This partnership aims to leverage their combined expertise to offer customers an expanded range of products and capabilities.
Pyramid Semiconductor is a leading supplier of high-quality components tailored for aviation, defense, medical, and railway transportation industries. Their aviation offerings include robust semiconductor solutions ensuring reliable performance in aircraft systems. For defense applications, Pyramid Semiconductor provides military-grade components meeting stringent standards for durability and security. In the medical sector, their advanced semiconductor devices support precision and reliability in medical equipment crucial for patient care. Additionally, Pyramid Semiconductor offers innovative solutions for railway transportation, enhancing safety and efficiency in rail systems. With a commitment to quality and innovation, Pyramid Semiconductor provides dependable components essential for critical applications across these industries.
Pyramid Semiconductor serves the defense market with high-reliability semiconductor solutions designed for demanding military and aerospace applications. With support for more than 100 Standard Military Drawings (SMDs), the company provides trusted processors, memory devices, and logic products engineered for long operational life, performance, and reliability in mission-critical environments.



The P4C422 is a 1,024-bit high-speed (10ns) Static RAM with a 256 x 4 organization. The memory requires no clocks or refreshing and has equal access and cycle times. Inputs and outputs are fully TTL compatible. Operation is from a single 5 Volt supply. Easy memory expansion is provided by an active LOW chip select one (CS1) and active HIGH chip select two (CS2) as well as 3-state outputs.

The P4C167/L are 16,384-bit high speed static RAMs organized as 16Kx1. The CMOS memories require no clocks or refreshing and have equal access and cycle times. The RAMs operate from a single 5V ± 10% tolerance power supply. Data integrity is maintained for supply voltages down to 2.0V, typically drawing 10μA.

The PYA28C64B is a 5 Volt 8Kx8 EEPROM. The device supports 64-byte page write operation. The PYA28C64B features DATA and Toggle Bit Polling to indicate early completion of a Write Cycle. The device also includes user-optional software data protection. Data Retention is 10 Years. The device is available in a 28-Pin 600 mil wide Ceramic DIP and 32-Pin LCC.

The P4C163 and P4C163L are 73,728-bit ultra high-speed static RAMs organized as 8Kx9. The CMOS memories require no clocks or refreshing and have equal access and cycle times. Inputs are fully TTL-compatible. The RAMs operate from a single 5V±10% tolerance power supply. With battery backup, data integrity is maintained for supply voltages down to 2.0V. Current drain is 10 μA from a 2.0V supply.

It often happens that components are replaced by new versions or generations over time, and the old components are no longer manufactured. In this case, companies usually have the opportunity to stock up on the used components again shortly before production is stopped or the new generation begins so that they can continue to offer their devices on the market and to their customers.

Pyramid Semiconductor Corp. today announced it received a Gold Tier Award from BAE Systems’ Partner 2 Win program. The award recognizes Pyramid Semiconductor’s exceptional performance and contributions to the BAE Systems’ Electronic Systems sector supply chain in 2025

Pyramid Semiconductor Corp. today announced the expansion of its partnership with Ineltek GmbH, appointing the company as an additional authorized distributor for North America, including the United States, Canada, and Mexico.