KYOCERA 5908 Series | Advancing High-Speed Connectivity
Innovative Shielded Board-to-Board Connectors for Reliable EMI Protection
Kyocera Corporation (President: Hideo Tanimoto, “Kyocera”) has developed the 0.4 mm pitch board-to-board connector, the 5908 Series, the first in its lineup to feature a fully shielded structure*1. Sales of this product, which enhances EMI characteristics*2 by suppressing electromagnetic interference and supports high-speed transmission, has begun on Thursday, July 31.
5908 Series Connector
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Main Features:
- Fully shielded structure provides excellent EMI characteristics, supporting high-speed data transmission
- A unique locking mechanism increases robustness and improves retention force by 30%
In recent years, as communication and information processing technologies advance, devices such as smartphones and smartwatches require increasingly sophisticated connectors. Enhancing EMI characteristics during high-speed transmission has become a significant challenge for these applications.
To address this, Kyocera has introduced a fully shielded structure in the 0.4 mm pitch board-to-board connector “5908 Series”, which offers excellent EMI characteristics by effectively suppressing noise intrusion and leakage.
1. Fully shielded structure provides excellent EMI characteristics, supporting high-speed transmission
A fully shielded structure has been adopted, in which the outer circumference of both the plug side
and the receptacle side is covered with a conductive metal (Figure 1). Since the fully shielded structure covers the main body and mating area of the connector with a metal shell, it can maximally suppress the intrusion and leakage of noise, thereby improving EMI characteristics. When mated, this product forms a double-shielded structure, allowing the electrical signal circuits to pass through the shield, which suppresses noise generation (Figure 2).
Supports high-speed transmission standards | PCI Express*3 Gen.3 (8Gbps) and USB*4 3.2 Gen.2 (10Gbps), etc.
Figure１：Shielded Structure
The plug side and the receptacle side shown in the upper diagram are mated, the shield section becomes double
Figure2:
Flow of electric signals (red line) in the shield structure
Figure3： Difference in noise generated during current flow between a non-shielded structure and a fully shielded structure (5908 series) (analysis results)
2. Unique locking mechanism increases robustness and improves retention force by 30%
The plug features a convex shape and the receptacle a concave shape, creating a locking structure that ensures secure mating and increases retention force by 30% compared to our previous products. Both components also feature an R-shaped design to facilitate assembly and enhance workability.
Figure４：Locking Mechanism
PRODUCT OVERVIEW | 5908 Series
| Product Name | 5908 Series |
|---|---|
| Pitch | 0.4mm |
| Size | Width: 4.2mm Stacking Height: 2.0mm |
| No. of Positions | 20 to 50 |
| Operating Temperature Range | -40℃ to +125℃ |
- *1 – A structure in which both the outer circumference of the connector’s plug side and receptacle side are covered with conductive metal.
- *2 – Electromagnetic Interference: Characteristics regarding the amount of electromagnetic interference generated and the resistance to such interference.
- *3 – PCI Express (PCIe): A high-speed serial bus standard for connecting internal expansion cards (such as graphics boards and SSDs) to the motherboard of a personal computer.
- *4 – USB: A general-purpose interface for connecting personal computers and peripheral devices (such as mice, keyboards, and storage devices).
ABOUT KYOCERA
Kyocera Corporation (TOKYO:6971, the parent and global headquarters of the Kyocera Group, was founded in 1959 as a producer of fine ceramics (also known as “advanced ceramics”). By combining these engineered materials with metals and integrating them with other technologies, Kyocera has become a leading supplier of industrial and automotive components, semiconductor packages, electronic devices, smart energy systems, printers, copiers, and mobile phones. During the year ended March 31, 2025, the company’s consolidated sales revenue totaled 2 trillion yen. Kyocera is ranked #1,123 on Forbes magazine’s 2025 “Global 2000” list of the world’s largest publicly traded companies, and has been named among “The World’s 100 Most Sustainably Managed Companies” by The Wall Street Journal
CONTACT
KYOCERA Corporation (Japan) Corporate Communications
Head Office TEL: +81-(0)75-604-3416 E-mail: webmaster.pressgl@kyocera.jp