This article covers Raspberry PI 3マザーボードモデルA +.

Overview

The Raspberry Pi RP3A+ is a single-board computer that offers a compact form factor while maintaining software compatibility with the Raspberry Pi 3 Model B+. Powered by a Broadcom BCM2837A single processor clocked at 1.4 GHz, the RP3A+ includes 512MB of LPDDR3 memory and relies on a microSD slot for storage. It ships with built-in Wi-Fi and Bluetooth 4.2, making it a cost-effective choice for headless servers, IoT projects, and low-power desktop tasks.
Despite its small footprint, the board packs a 40-pin GPIO header that is fully compatible with the original Raspberry Pi HAT standard. This means existing add-on boards, cases, and tutorials continue to work without modification. Power is supplied through a Micro-USB connector supporting 2.5A input.

Connectivity & Compatibility

The RP3A provides one full-size HDMI 2.0 output, two USB 2.0 Type-A ports, a CSI camera connector, and a microSD slot. It does not have an Ethernet port or a built-in onboard ethernet component; wired networking requires a USB-to-Ethernet adapter. The 802.11n Wi-Fi and Bluetooth 4.2 wireless modules are standard coverage.

Product Info

Released around 2019, the RP3A+ was positioned as an entry-level single-board computer. The original MSRP was around $25 for the basic model without additional accessories. Warranty covers a 1 year period from the date of purchase. The RP3A+ remains available through official resellers and online retailers. It is best suited for low-power IoT gateways, traffic monitoring, and educational projects where cost is a key factor.

Best Use Cases

IoT and Embedded Systems — The low power draw and GPIO direct connection make it ideal for sensor networks and automation. The 512 MB memory limit means it should not be used for high-demand desktop tasks.
Education and Prototyping — With the full Raspberry Pi OS support and the educational Pi HAT ecosystem, beginners can jump into projects right away. It is not the right choice for heavy multitasking or GUI desktop use.
Portable Linux Device — Since it can be powered off USB, the RP3A+ is great for small-scale servers or monitoring gadgets. However, storage is limited to SD card, so consider using a USB SSD for reliability.

Product Disclosure (Amazon)

  • Manufacturer: Raspberry Pi
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B07KKBCXLY
  • Note: This article covers a manufacturer-made product based on Amazon listing details.