Frequently Asked QuestionsFAQ

BOM assembly helps you quickly match and quote your component purchasing list:

• Upload your Excel or CSV BOM file on the 'Upload BOM' page
• The system will automatically recognize component part numbers, brands and packages
• It matches inventory and pricing from the EZKEY database to generate a complete assembly plan
• You can adjust quantities and choose alternative parts based on recommendations, then generate an inquiry order with one click

There is no format restriction on uploaded BOM files — the system parses them intelligently.

EZKEY's BOM assembly service supports the following file formats:

• Excel: .xlsx, .xls
• CSV: .csv (UTF-8 encoding)
• Text: .txt (one part number per line)

The system automatically recognizes columns for part number, brand, package and quantity — there is no strict template requirement. We recommend including a header row with column names for more accurate parsing.

Accepted categories: IC chips, MCUs, MOSFETs, diodes, transistors, capacitors, resistors, inductors, connectors, sensors, modules and all other electronic component categories.

You can contact us through the following channels:
Phone: +86-0755-8393 2009
Email: rfq@e-z-key.com

EZKEY has a global logistics network with the following delivery times:

• Mainland China: 1-3 business days (SF/JD Express)
• Hong Kong/Macau/Taiwan: 2-4 business days
• Southeast Asia: 3-5 business days
• Europe/Americas: 5-8 business days

We support shipping to 200+ countries and regions. Actual freight and delivery time can be viewed at checkout.

You can check your shipment by:

• Logging into your EZKEY account and going to the 'My Orders' page
• Finding the relevant order and clicking 'View Details'
• Checking the tracking number and link on the order detail page
• The link will redirect you to the courier's official tracking site

If you encounter any delivery issue, please contact our support team for assistance.

EZKEY supports smart alternative part recommendations — the system suggests compatible replacements based on package, parameters and electrical characteristics. BOM assembly supports .xlsx, .xls, .csv and .txt formats, automatically recognizing part number, brand, package and quantity columns with no strict template requirement. Both single and bulk uploads are supported.

On the component search page, use the left-side filters to narrow down by brand, package type, operating voltage, output current and other parameters. You can also combine keywords, such as 'STM32 48Pin LQFP', to search directly — the system will return a matched product list with detailed specifications.

Go to the 'Brand Showcase' section from the top navigation bar, select the manufacturer you need (e.g. ST, TI, ADI, ON Semiconductor), and view all product part numbers, specifications, stock status and pricing for that brand. Each brand page offers quick search and parameter filtering.

EZKEY guarantees that 100% of all components are genuine original parts, each fully traceable. We are an ISO 9001 / ISO 14001 dual-certified company and an official member of D-U-N-S and ERAI, providing complete authentic sourcing documentation and test reports. If a non-genuine product is found, we offer a no-questions-asked replacement or refund.

Yes, EZKEY has a professional technical support team covering major component domains including MCUs, power management, sensors and RF. You can click 'Request a Quote' on any product detail page to communicate directly with our engineers, or describe your application scenario in the inquiry form and we will provide selection advice and alternative solutions.

Our support team is always ready to help. You can reach us by phone at +86-0755-8393 2009 or by email at rfq@e-z-key.com. Alternatively, submit your inquiry online during business hours (Monday to Friday, 9:00-18:00) and we will respond within 30 minutes.