Hirose Launches Hybrid FPC-to-Board Connector with Fully Shielded Structure for Superior EMI Prevention
5 August 2026 
Hirose has announced it has launched a hybrid FPC-to-board connector with a fully shielded design that blocks both radiation and incident magnetic fields for clear and reliable signal transmission. The compact BK35 series supports high-speed data transmission up to 40 Gbps and superior RF signal transmission up to 40 Ghz.
Featuring a 0.35mm pitch, 2.2mm depth, and 0.6mm stacking height, the BK35 Series is designed for space-constrained environments that are radiation and/or EMI-sensitive, including smartphones, tablets and notebook PCs, wearable devices, and other compact electronic systems.
Simplifying system design, the BK35 Series features a hybrid design that combines power and signal contacts, reducing the number of connectors required on a printed circuit board and offering additional space and cost savings. With four power contacts rated at 2.5A each, the BK35 Series delivers reliable power.
In addition, the BK35 Series has a robust, fully armoured design for enhanced reliability and durability in demanding environments. The armour also protects against housing damage from misalignment during mating.
The FPC-to-board connector can deliver excellent high-frequency performance up to 40GHz and has low voltage standing wave ratios (VSWR) of:
- 0-5 GHz: 1.3 Max.
- 5-10 GHz: 1.4 Max.
- 10-20 GHz: 1.5 Max.
- 20-40 GHz: 1.8 Max.
The company says engineering teams developing compact, high-frequency, EMI-sensitive systems need connectors that deliver both electrical performance and mechanical resilience in a miniature form factor. The hybrid BK35 series addresses these needs with a fully shielded design and robust construction, enabling reliable signal integrity in space-constrained applications.
Key Features:
- High power supply capacity and space-saving design
- Excellent EMI prevention with fully shielded design
- Supports high speed transmission (up to 40Gbps)
- Superior RF signal transmission up to 40GHz
- Robust and durable fully armored design
For more information about the BK35 Series, visit: https://www.hirose.com/en/product/series/BK35
For more information about Hirose, visit www.hirose.com/us