Contact us
Whether it is part selection, a sample request or a discussion about your design, our engineers will get back to you shortly.
Online enquiry
Fill in the form below and we will get back to you by phone or email within one working day. Fields marked with * are required.
Office locations
We work from two sites, Taizhou and Suzhou. You are welcome to visit — please arrange a time with your contact beforehand.
Taizhou
Registered address and administrative base; application and solution development center.
Suzhou
Chip design, verification and system application R&D center; delivery and support center.
Frequently asked questions
How do I request samples?
Send your request through the form on this page or by email, stating the target part number, estimated volume and project stage. We will arrange samples and evaluation boards according to the product stage.
Where can I download product documents?
Non-confidential datasheets can be downloaded from the "Documents" section on each product page. Documents marked confidential require a separate request; we will verify your project before releasing them.
How do I request confidential documents?
Click "Request access" on the product page or use the form here, stating the target part number, application and project stage. We will reply within one working day and start the documentation process.
Do you offer pin-to-pin replacements?
Several families are already pin-compatible (current sensors, speed sensors and LDOs). Tell us the part you use today and we will advise on the replacement path.
Do you support custom development?
Yes. RJMICRO can customize products around application requirements, optimizing performance and feature configuration for specific scenarios.