MMBD2004S-7-F KA9 KAE SMD Switching Diode SOT-23 Whatsminer Control Board

Name: MMBD2004S-7-F KA9 KAE SMD Switching Diode SOT-23 Whatsminer Control Board
Brand: LYS Shenzhen
Price: 0.1 USD
Availability: InStock

$0.10 USD

Sale Sold out

Shipping calculated at checkout.

🇺🇸🇪🇺 USA & European Union: DDP shipping — all import duties & taxes included, no hidden fees.

🌍 Rest of world: Ships from China — local customs fees may apply on delivery.

Get Business Pricing

Product variants

Quantity

Secure checkout

SSL encryption & invoicing options

Worldwide shipping

Export-ready customs documentation

QC-tested spare parts

Specialized in ASIC miner hardware

Technical support

Assistance from mining engineers

Have questions about this product? Our team is here to help — just reach out on WhatsApp.

💬 Contact Us on WhatsApp

About the Product

MMBD2004S KA9/KAE SMD Switching Diode – Whatsminer Control Board Repair

The MMBD2004S-7-F (marking KA9 or KAE) is a fast-switching SMD diode in a SOT-23 package, used on Whatsminer control boards for signal routing and protection functions. Its fast switching speed and compact form factor make it suitable for automated assembly and board-level repair. New original component.

When to Replace

A failed switching diode on the control board can cause signal path issues — the miner may fail to communicate with hashboards, produce intermittent errors or refuse to boot. The SOT-23 package is small and easily damaged during adjacent component rework. Verify failure with a multimeter in diode mode before replacing.

Replacement Procedure

Locate the failed MMBD2004S on the control board — marked KA9 or KAE in SOT-23 format. Desolder with a fine-tip iron or hot air at 280–310°C, clean pads, place the new device observing polarity and reflow. Verify normal board operation after reinstallation.

MMBD2004S Diode Specifications

Parameter	Value
Part Number	MMBD2004S-7-F
Marking	KA9 / KAE
Type	Fast switching diode
Package	SOT-23
Compatibility	Whatsminer control boards
Condition	New

Related Whatsminer Control Board Components

Repairing Whatsminer control boards? Contact us at contact@lys-sz.com for diodes, ICs and all board-level components.

Worldwide shipping from our Shenzhen warehouse.

Shipping & Customs

🇺🇸🇪🇺 USA & European Union (DDP):
Orders are delivered DDP (Delivered Duty Paid). All customs duties, import taxes, and fees are included — no additional charges on delivery.

🌍 Rest of world:
Orders ship from China. Depending on your country, local customs authorities may apply import duties or taxes. Any such fees are set by your local authorities and are not included in the product price.

View Product Details

ASIC TEST FIXTURE

K9 Multifunctional Hashboard & Power Supply Tester

Save up to 25% with the current price

Shop now

LYS-SZ.com provides shipping services from China to worldwide through our agents and offices

WORLDWIDE EXPRESS SHIPPING

LYS-SZ.com offers reliable shipping and logistics solutions worldwide. We have strong partnerships with leading carriers like DHL, FedEx, and UPS, ensuring timely, efficient and tracked transportation of your goods.