At its Works With Summit event in Austin, Texas, Silicon Labs declared that the Series 3 platform: the SiMG301 and SiBG301 SoCs, would be made generally available. Silicon Labs and approved distribution partners around the world are currently shipping the devices, which are the first in the SixG301 series.
By enhancing the company’s well-established Series 2 platform and offering generational gains in computation, networking, integration, and security, Series 3 further solidifies Silicon Labs’ leadership at the intelligent edge.
Without altering ecosystems, tools, or support models, device manufacturers can continue to expand on the range and maturity of Series 2 for ultra-low-power endpoints and switch to Series 3 for more demanding and feature-rich designs.
What’s new in Series 3 and the SixG301 family
Built on an advanced 22 nm process, Series 3 introduces a multi-core architecture that separates application, wireless, and security workloads, providing headroom for growing protocol stacks and emerging compute-intensive use cases at the edge.
The SixG301 Family Consists of:
- SiMG301 (Multiprotocol): Concurrent Zigbee®, Bluetooth® LE, and Matter over Thread; ideal for smart lighting, and other Matter-focused switches, sensors, and controllers. An integrated LED pre-driver reduces external components, BOM cost, and board space in line-powered designs.
- SiBG301 (Bluetooth-Optimized): Tailored for Bluetooth LE applications that benefit from Series 3 compute and security, with an easy migration path from Series 2 Bluetooth designs.
Both devices offer developers generous Flash/RAM headroom with up to 4 MB Flash and 512 kB RAM.
They both include Silicon Labs’ PIXELRZ single wire communication interface for LED controller ICs as well as a LED pre-driver that enables low level and consistent dimming, which together simplify designs, reduce costs, and provide efficient power for smart home lighting, smart building lighting, and other lighting applications.
Silicon Labs Quickens Time to Market for Matter Devices
The SiMG301 is among the first devices included in the Connectivity Standards Alliance’s new Matter Compliant Platform Certification program. A Matter Compliant Platform is a tested combination of SDK and designated hardware that has been certified by the Alliance for core Matter functionality.
By building on a certified platform, device makers can inherit pre-tested commissioning, networking, and message security, significantly reducing the number of tests required for end-product certification.
Teams can also take advantage of the Alliance’s Fast Track and Rapid Recertification programs when the underlying platform remains unchanged, shortening development cycles and lowering costs. Products built this way are referred to as Derived Matter Products (DMPs).
Silicon Labs’ Series 2 MG24 and MG26 SoCs will also be included in the Matter Compliant Platform Certification program.
Security that Leads the Industry: World’s First PSA Level 4 Certification
Security is foundational to Series 3. Series 3 Secure Vault, debuting with the SixG301 family, has achieved the world’s first PSA Level 4 certification, the highest level recognized by PSA Certified and addresses advanced physical attacks.
This certification validates Silicon Labs SoCs equipped with Series 3 Secure Vault, like the SiMG301 and SiBG301, for resilience against laser fault injection, side-channel analysis, micro-probing, and voltage manipulation. This raises the bar for edge protection and supports alignment with tightening global regulations. The certification followed independent lab evaluation.
Built on Silicon Labs’ Series 2 security legacy, Series 3 Secure Vault includes a hardened root of trust, lifecycle controls, and secure OTA update support for products expected to live in the field for years. Silicon Labs’ Secure Vault’s features help developers reach compliance with emerging regulations including the EU’s RED and CRA and the U.S. Cyber Trust Mark, among others.
Availability and developer enablement
SiMG301 and SiBG301 are available today from Silicon Labs and authorized distributors. Developers can access evaluation kits, reference applications, and a guided Matter Developer Journey—including certification checklists and lab-ready test projects—to accelerate product development and certification.
Leadership Comments
“SiMG301 and SiBG301 bring Series 3’s compute and integration with the world’s first PSA Level 4 security, giving customers a stronger foundation for long-lived, secure IoT,” said Ross Sabolcik, Senior Vice President of IoT Products at Silicon Labs. “With SiMG301 among the first in the Alliance’s Matter Compliant Platform Certification program, teams can deliver feature-rich, Matter-certified products faster with pre-tested core functionality and a clearer certification path.”
“Since Matter’s inception, Silicon Labs has been a leading contributor and reliable partner to the Alliance, helping drive robust implementations, real-world interoperability, and taking a central role in creating the Matter Compliant Platform Certification program” said Jon Harros, Global Head of Certification at the Connectivity Standards Alliance. “Having SiMG301 among the first in the program underscores that leadership and gives device makers a proven foundation to ship secure, feature-rich Matter products faster.”
