Suntsu’s FPGA (field programmable gate array) catalog covers a broad range of programmable gate array devices for industrial, communications, defense, and embedded computing applications. Source standard and hard-to-find FPGA chips from leading manufacturers with confidence. Browse our in-stock catalog or contact our team to discuss your requirements.
Field Programmable Gate Array (FPGA)
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About Field Programmable Gate Arrays (FPGA)
A field programmable gate array is a reconfigurable integrated circuit that allows engineers to implement custom digital logic without the cost or lead time of an application-specific IC (ASIC). Unlike fixed-function logic devices, FPGAs can be programmed and reprogrammed after manufacturing, making them well-suited for designs with evolving requirements, rapid prototyping cycles, and low-to-mid volume production runs. FPGA programming starts with a hardware description language (HDL) such as VHDL or Verilog. FPGA development software then synthesizes the design into a bitstream that you load into the device.
FPGAs process data through an array of configurable logic blocks (CLBs) connected by a programmable routing fabric. Each logic block combines look-up tables (LUTs) and flip-flops, and the routing fabric links those blocks to the I/O pins. This architecture enables parallel processing of high-speed data streams, making FPGAs the preferred solution in digital signal processing, machine vision, radar systems, telecommunications infrastructure, and real-time control applications. They are widely deployed across industrial automation, aerospace and defense, medical imaging, and high-performance computing. In edge AI designs, an FPGA can run inference with deterministic latency, which matters when the system must respond within a guaranteed time window.
Suntsu carries FPGA chips alongside a full range of integrated circuits, including complementary devices such as clock and timing ICs and memory that are commonly designed alongside FPGAs in complex digital systems.
Types of Field Programmable Gate Arrays We Offer
Low-Density FPGAs
Low-density FPGAs offer a cost-effective entry point for designs requiring moderate logic capacity, basic I/O expansion, or glue logic replacement. These devices are commonly used in industrial control, consumer electronics, and embedded systems where a microcontroller alone cannot meet the parallel processing or I/O demands of the application. Their flexibility allows for rapid prototyping in design to meet evolving requirements.
High-Density FPGAs
High-density FPGAs provide large logic cell counts, embedded DSP blocks, high-speed transceivers, and on-chip memory resources accelerate compute-intensive applications. These are specified in communications infrastructure, defense electronics, and AI inference platforms where throughput and low latency are critical. They frequently work alongside interface ICs and drivers and transceivers in high-speed data path designs.
Industrial-Grade FPGAs
Industrial FPGA devices are rated for extended temperature ranges and long product lifecycles, making them appropriate for automation, energy management, and ruggedized equipment. These parts prioritize supply continuity and environmental reliability over peak performance density.
Hard-to-Find and Obsolete FPGAs
Suntsu specializes in sourcing discontinued and allocation-constrained FPGA components for legacy system maintenance and last-time-buy scenarios. Search by part number or manufacturer to check availability across our inventory database. Obsolete parts carry a higher counterfeit risk, so learn how to spot counterfeit electronic components before you buy, and see what to do when you get a sudden EOL notice.
FPGA vs. CPLD, Microcontroller, and ASIC
Not every design needs an FPGA. Use this comparison to confirm the right device class before you pick a part.
Device Best for Trade-offs FPGA Parallel processing, custom interfaces, and logic you can update after deployment Needs HDL skills and tool-flow time, usually costs more than a microcontroller, and needs several power rails CPLD Simple glue logic and control functions at low logic density Much less logic capacity and fewer I/O than an FPGA Microcontroller (MCU) Software-based control with lower cost and simpler deployment Runs instructions in sequence, so parallelism and timing flexibility are limited ASIC Highest efficiency for fixed, high-volume designs Fixed after manufacturing, with high up-front cost and long lead time
How to Choose the Right Field Programmable Gate Array
Selecting the correct FPGA requires evaluating both the logic architecture and the broader system context:
Logic capacity and resource requirements: Estimate the number of logic cells, DSP slices, block RAM, and I/O pins your design requires. Undersizing leads to routing congestion; oversizing increases cost and power draw unnecessarily.
I/O standard and interface compatibility: Confirm that the FPGA supports the required I/O voltage standards and high-speed serial protocols (PCIe, LVDS, SERDES) for your system interfaces, plus the memory and peripheral interfaces your board needs. Pair with appropriate logic ICs or specialized ICs where signal conditioning is needed.
Power supply and management: FPGAs typically require multiple supply rails for core, I/O, and auxiliary logic. Ensure your power architecture can meet the sequencing and regulation requirements of the selected device. Pair the FPGA with the right power management ICs and plan rail order early.
Operating temperature and reliability grade: Industrial and defense applications require devices rated beyond the commercial 0°C to 85°C range. Verify the temperature grade and qualification level against your deployment environment.
Toolchain and vendor ecosystem: FPGA selection is closely tied to the development toolchain. Factor in familiarity with the vendor’s tool suite for synthesis and place-and-route, IP core availability, and long-term product roadmap support before committing to a device family.
FPGA FAQs
What is an FPGA used for?
FPGAs handle workloads that need parallel processing, low latency, or logic you can update after deployment. Common uses include signal processing, machine vision, networking and communications infrastructure, industrial control, aerospace and defense electronics, and edge inference.
What is the difference between an FPGA and a microcontroller?
A microcontroller runs software on a fixed processor, one instruction at a time. An FPGA implements your logic as circuitry, so many operations run in parallel with predictable timing. Microcontrollers usually cost less and are simpler to program. FPGAs fit designs that need more I/O, tighter timing, or custom interfaces. See how microcontrollers work and how to choose one.
How is an FPGA programmed?
You describe the design in a hardware description language such as VHDL or Verilog. The vendor’s software synthesizes it into a bitstream, and you load that bitstream into the device.
Does an FPGA need external configuration memory?
It depends on the architecture. SRAM-based FPGAs lose their configuration when power is removed, so they reload a bitstream at start-up, often from external NOR flash. Flash-based FPGAs keep their configuration on-chip. Check the datasheet for the device you are considering.
Can I buy obsolete or end-of-life FPGAs?
Yes. Suntsu sources discontinued, legacy, and allocation-constrained FPGAs for legacy system maintenance and last-time buys. Search by part number or request a quote.
Are FPGAs a good fit for AI applications?
Often, at the edge. An FPGA can run neural network inference with low, predictable latency and, for some workloads, better performance per watt than a GPU. Large-scale training usually runs on GPUs. Match the device to your workload, latency target, and power budget. See edge AI in your product designs.
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