About Us

At SIPU RF, we provide reliable RF and microwave connectivity solutions for engineers, system integrators, and technical teams working in demanding environments.

Our brand is exclusively operated by JNP Supplies LLC, a Seattle-based company founded in 2020. JNP Supplies serves as the North American representative of SIPU, bridging global manufacturing capabilities with local responsiveness. Whether you're sourcing critical components for test labs, communication systems, or industrial devices, we’re here to support your success with dependable RF hardware and responsive service.

What We Do

With more than two decades of design and manufacturing experience, SIPU focuses on high-quality RF products including:

Coaxial connectors (SMA, SMP, TNC, SSMA, etc.)

RF adapters and precision cable assemblies

Custom microwave components and accessories

Our products are designed to perform in a wide range of applications—from R&D labs and wireless infrastructure to industrial automation, IoT devices, satellite communication, and precision test systems. Every item we ship is rigorously tested to ensure excellent electrical performance and long-term reliability.

Why Choose SIPU RF?

Local support through JNP Supplies in Seattle

Fast fulfillment for stocked items and small-batch orders

ISO9001, RoHS, CE certified quality systems

Over 20 years of RF component manufacturing expertise

OEM/ODM support available for custom designs

Trusted by engineers in communications, metrology, and embedded system development

We understand the importance of signal integrity, mechanical precision, and product consistency. That’s why SIPU products are designed for stability under real-world operating conditions.

Let’s Work Together

From standard parts to customized solutions, we’re here to help you find the right fit.