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Sipeed Tang Mega 138K Pro Dock GOWIN GW5AST RISC-V FPGA Development Board

Vendor: sipeed
SKU: SPDP138K0002
Availability: In stock
$1,873.00
MODEL: 138K Basic Package

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Sipeed Tang Mega 138K Pro Dock GOWIN GW5AST RISC-V FPGA Development Board
Regular price HK$1,873.00 HKD
Regular price HK$0.00 HKD Sale price HK$1,873.00 HKD (-0%)
MODEL: 138K Basic Package
Sipeed Tang Mega 138K Pro Dock GOWIN GW5AST RISC-V FPGA Development Board
Sipeed Tang Mega 138K Pro Dock GOWIN GW5AST RISC-V FPGA Development Board
$1,873.00

Overview

The Tang Mega 138K Pro is a high-density FPGA development system built around the Gowin GW5AST-LV138FPG676A chip. Designed for demanding applications in high-speed communication and edge computing, this board combines massive logic resources (138K LUTs) with nearly 300 DSP units and eight high-speed transceivers supporting up to 12.5Gbps. The integrated RISC-V AE350 hard core and dedicated PCIe hardware ensure efficient processing and seamless host connectivity. Ideal for researchers, engineers, and hobbyists tackling complex signal processing and AI inference tasks.

Key Features

  • Massive Logic Capacity: With 138,240 Look-Up Tables (LUTs) and 298 multipliers, handle complex algorithms and large-scale state machines with ease.
  • High-Speed Connectivity: Features 8 transceivers (270Mbps–12.5Gbps) and a native PCIe 3.0 hard core (x1/x2/x4/x8), enabling fiber optic transmission and high-bandwidth data exchange.
  • Embedded SoC Architecture: Includes a hard-core RISC-V AE350 processor, allowing for hybrid CPU+FPGA designs without consuming soft logic resources.
  • Rich I/O Ecosystem: The carrier dock board provides dual SFP+ cages, Gigabit Ethernet, MIPI CSI/D-PHY interfaces, and DVI TX/RX for versatile multimedia and networking applications.
  • Generous Memory: Onboard 1GB DDR3 (configured as 512MB x 2) and 256Mbits Flash ensure ample space for data buffering and configuration storage.
  • Developer Friendly: Comes with an onboard USB JTAG debugger and UART interface, eliminating the need for external programmers. Supports Gowin IDE v1.9.9+ (Commercial License required).

Technical Specifications

  • FPGA Chip: GW5AST-LV138FPG676A (22nm)
  • Logic Resources: 138,240 LUT4, 138,240 Flip-Flops
  • Memory: 1GB DDR3 (1,333 Mbps), 256Mbits SPI Flash
  • High-Speed I/O: 8x Transceivers (up to 12.5Gbps), PCIe 3.0 Hard Core
  • Interfaces: 2x SFP+, 1x Gigabit Ethernet, 2x MIPI CSI (3-Lane), 2x DVI (TX/RX shared), 3x PMOD
  • Processor: Hard-core RISC-V AE350 SoC
  • Debug Interface: USB JTAG & UART (FTDI based)
  • Power Input: 12V DC
  • Dimensions: SOM: 50mm x 70mm (Dock board size not specified)
  • IDE Support: Gowin IDE v1.9.9 or newer (Commercial License)

Ideal Applications

  • High-speed protocol conversion (PCIe, Fiber, Ethernet)
  • Real-time image processing and computer vision (MIPI support)
  • Software Defined Radio (SDR) and communication basebands
  • Hardware acceleration for AI/ML inference
  • Industrial control and edge computing gateways

Package Contents

  • 1x Tang Mega 138K Pro SOM Board
  • 1x Dock Board (with peripherals)
  • Standard packaging (check with vendor for specific cable/accessory inclusion)

General Shipping Info

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For any immediate assistance, reach us at shop@youyeetoo.com.


Order Changes & Cancellations

Cancelling or Changing an Order

  • You may cancel your order or change the delivery address within 24 hours of placing it.
  • Because most orders enter processing within 12 hours, we recommend contacting us as soon as possible. Once the status changes to “Processing”, the order can no longer be cancelled or altered.
  • To request a change or cancellation, email shop@youyeetoo.com with your order number and details.

Refunds for Cancellations

  • Cancelled before shipment: Full refund processed within 3 business days to your original payment method.
  • Already shipped / rejected at delivery: The order cannot be cancelled. If you reject the parcel, we will refund the order total minus the original shipping fee after the returned package is received back at our warehouse.

Payment

Please visit our Payment Method page for available options.
If your order status shows “Pending / Waiting for T/T”, your payment has not yet cleared. Sending us a payment receipt can speed up the process.

Shipping Address

  • Enter your shipping address in English, without special symbols. This helps the courier system recognise your address correctly.
  • We ship to the exact address you provide. If you need to change it, notify us before the order enters “Processing” status.
  • Tip: Save your frequently used address in your account for faster checkout.

Shipping Methods, Time & Costs

Dispatch Time

Most in‑stock products ship from Shenzhen, China within 1–3 business days.

Carriers & Transit Times

Service Carrier Estimated Delivery
Premium Express FedEx / UPS / DHL 5–7 business days
Standard Express YunExpress / EMS / 4PX / SF Express 10–15 business days

Tracking

Once your order is marked as “Shipped”, you will receive a confirmation email with a tracking number.
Track your order: Order Tracking Page (please ensure this link points to your live tracking tool).

Shipping Costs

Shipping fees are calculated automatically at checkout, based on your destination and package weight.

Local Delivery via Amazon

To help you avoid customs clearance hassles, we offer local shipping through Amazon in the USA and Europe. We are working to extend this to more regions.

International Shipping & Customs

We ship to the USA, all European countries, and many other destinations. If your country does not appear during checkout, contact shop@youyeetoo.com.

  • International orders may be subject to customs duties, taxes, or import fees levied by the destination country.
  • These fees are not included in your order or shipping total, and are the sole responsibility of the parcel recipient.
  • We cannot predict or pre‑collect these charges; they are determined by local customs based on product value.

Order Status

  • Pending / Waiting for Payment – Your payment has not cleared yet. Share your payment receipt to help us verify it quickly.
  • Preorder – Contains items with a future release date. The entire order will ship together once all pre‑order items are available. Estimated ship dates are shown on the product page (subject to change with notice).
  • Processing (Backordered) – Some items are temporarily out of stock. We are sourcing them. To receive available items first, please contact our support team.
  • Shipped – Your package is on its way. A tracking number has been emailed to you.

Receiving Your Package

Inspect Before You Sign

Please check the contents of your parcel before signing the delivery receipt. If you sign without inspection, we cannot be held responsible for damage that occurred during transit.

“Delivered” but Not Received

Occasionally courier tracking (especially EMS) shows “delivered” a little early. Your package usually arrives within 1–3 days. In the meantime, we suggest:

  • Checking with neighbours or your building reception.
  • Contacting your local post office with the tracking number.

Missing or Lost Package

If a package is truly lost, email us at shop@youyeetoo.com with your order number and tracking number. We will file a claim with the carrier and work with you on a resolution.

Returns & Exchanges

Return Policy at a Glance

Reason for Return Who Pays Return Shipping? Your Refund
Personal reason (30‑day no‑reason return) Buyer pays return shipping Product price minus original outbound shipping
Our error (defective, wrong item, transit damage) We cover return shipping (label provided) Full refund (including original shipping)

30‑Day No‑Reason Return

If you change your mind, you have 30 days from the shipment date to return an item.

  • Items must be unused, undamaged, and in their original packaging with all labels intact.
  • Refunds are processed within 3 business days of us receiving the return, to your original payment method.

How to Start a Return

Email shop@youyeetoo.com with:

  1. Your order number
  2. Reason for return
  3. Clear photos or videos showing the product and any issues

Once approved, we will provide the return address. Please share the return tracking number once shipped.

Specific Return Scenarios

Defective Item
Contact us before returning. We will, upon verification, replace the item or issue a full refund.

Wrong Item Received
Mistakes occasionally happen. You may keep the incorrect item with a partial refund, or request the correct item. If we made the error, we will provide a free return shipping label to send the wrong item back.

Damaged During Transit
Please reject the delivery immediately if the package appears damaged. Then contact us with photos/videos. We will work with the carrier to expedite a replacement or full refund.

Missing or Lost Item
See the Receiving Your Package section above.

Warranty & Repairs

Standard Warranty

  • Most boards come with a 12‑month limited warranty from the date of shipment.
  • Covered: Manufacturing defects and hardware failures under normal use. We will repair or replace defective components free of charge, covering one‑way shipping back to you.
  • Not covered (out‑of‑warranty repairs or excluded causes): Repairs will be charged. All costs (repair, shipping, handling) are the customer’s responsibility.

Important Note on Chip Damage

Damage to main chips/MCUs caused by misuse—such as overvoltage, reverse polarity, short circuits, liquid ingress, or improper firmware flashing—is not covered under free warranty. In these cases we will provide a paid repair quote based on the chip value.

Warranty Exceptions

This warranty does not cover damage resulting from:

  • Operating environment not meeting national standards (overvoltage, overcurrent, lightning, high temperature, extreme humidity, vibration, etc.)
  • External events (earthquake, fire, etc.)
  • Human factors (liquid contact, abuse, oxidation, rust, dropping)
  • Failure to follow official installation, usage, maintenance, or storage instructions
  • Unauthorised modification, disassembly, or re‑assembly
  • Natural wear and tear, cosmetic degradation, or breakage during use
  • Any other issue not directly caused by design, technical, or manufacturing defects

Warranty Claim Process

To avoid delays, please email shop@youyeetoo.com with:

  1. Detailed description of the problem (What happened? When? How?) and your full order number.
  2. Steps you’ve already taken to resolve the issue.
  3. The item code printed on the outer packaging.
  4. Clear photos/videos showing the defect, taken under good lighting.

Technical Support

  • We offer lifetime technical support to all customers.
  • Search the youyeetoo Forum first—many common questions are already answered there.
  • You can also contact us directly or post a question on the Forum for help with specifications, debugging, or setup.

Buyer Protection

Buyer Protection is a set of guarantees that lets you shop with confidence. You are protected when:

  • The item does not arrive within the promised time.
  • The item received is significantly different from the description.
  • An item guaranteed as genuine turns out to be counterfeit.

Contact
For all the above matters, our support mailbox is:
shop@youyeetoo.com

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