
This product group supports high-speed transmission while retaining the superior features of previous models, such as Floating Connector and Auto I-Lock structure ™ structure. Even with terminals with complex structures, a stable impedance profile enables high-level high-speed transmission.
The recent trend toward more sophisticated equipment and increased data volumes is spurring demand for high-speed transmission in connecting components. Furthermore, the increase in high-frequency components in signals has led to situations where attention must be paid to even minute details that previously did not pose a problem. High-speed transmission compatible products are optimally designed by organically combining numerous on-site evaluations and simulations.
The 10143 series supports various transmission standards including PCIe Gen 4, achieving high-speed transmission of up to 25Gbps*.
Another major feature is that it combines IRISO' Floating structure technology with high-speed transmission, making it highly reliable and easy to use.
*When measured according to the "OIF CEI-28G-SR" standard

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By locating the power terminals on both ends of the product, there is no need to allocate terminals for power supply, which contributes to miniaturizing the connector.
This power terminal also serves as a fixing bracket, making it possible to miniaturize the entire connector, thereby reducing the area that the connector occupies on the board.

Due to the increase in heat generated around the engine in automotive equipment and due to the increasing functionality of devices, connector products are also required to have high heat resistance.
Our highly heat-resistant products, realized through the full use of materials and design technology, can be used safely even in harsh high-temperature environments up to 125°C.

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| 10143B | 10143S | 10144B | 10143S | |
|---|---|---|---|---|
| Product images | ![]() |
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| Connector Orientation | Vertical | Right Angle | Vertical | |
| Pin Counts (Pin) | 20~160 | 20~160 | ||
| Mating Height (mm) | 10.0~30.0 | – | ||
| Board mounting method | SMT | |||
| Pitch | 0.5mm | |||
| Transmission speed | 25 Gbps | |||
| Rated voltage | 50 V(AC,DC) | |||
| Rated current (signal) | 0.5A | |||
| Rated current (power supply) | 3.0 A | |||
| Operating temperature limit | -40~+125℃ | |||
| Array | Dual Row | |||
| Connection method (contact) | 1 point | |||
| Floating structure | X: ±0.8 Y: ±0.8 | |||
Other detailed specifications, please check the product search.
The contents and specifications are subject to change.
We can introduce you to the most suitable product depending on your application, so please contact us if you are considering it.


| Pin Counts | Product Number | A | B | C. |
|---|---|---|---|---|
| 20 | IMSA-10143B-20A/B-GFN4 | 7.40 | 15.5 | 6.6 |
| 40 | IMSA-10143B-40A/B-GFN4 | 7.40 | 20.5 | 6.6 |
| 60 | IMSA-10143B-60A/B-GFN4 | 7.40 | 25.5 | 6.6 |
| 80 | IMSA-10143B-80A/B-GFN4 | 7.40 | 30.5 | 6.6 |
| 100 | IMSA-10143B-100A/B-GFN4 | 7.40 | 35.5 | 6.6 |
| 120 | IMSA-10143B-120A/B-GFN4 | 7.40 | 40.5 | 6.6 |
| 140 | IMSA-10143B-140A/B-GFN4 | 7.40 | 45.5 | 6.6 |
| 160 | IMSA-10143B-160A/B-GFN4 | 7.40 | 50.5 | 6.6 |


| Pin Counts | Product Number | A | B | C. |
|---|---|---|---|---|
| 20 | IMSA-10143S-20C/D-GFN4 | 9.1 | 17.2 | 7.3 |
| 40 | IMSA-10143S-40C/D-GFN4 | 9.1 | 22.2 | 7.3 |
| 60 | IMSA-10143S-60C/D-GFN4 | 9.1 | 27.2 | 7.3 |
| 80 | IMSA-10143S-80C/D-GFN4 | 9.1 | 32.2 | 7.3 |
| 100 | IMSA-10143S-100C/D-GFN4 | 9.1 | 37.2 | 7.3 |
| 120 | IMSA-10143S-120C/D-GFN4 | 9.1 | 42.2 | 7.3 |
| 140 | IMSA-10143S-140C/D-GFN4 | 9.1 | 47.2 | 7.3 |
| 160 | IMSA-10143S-160C/D-GFN4 | 9.1 | 52.2 | 7.3 |
A wide variety of variations are available, with board-to-board heights of 10 to 30 mm and Pin Counts ranging from 20 to 160.

As global environmental issues become more serious, the global trend toward decarbonization is driving a shift to electric vehicles (EVs). IRISO Electronics is strengthening its development of connectors suitable for EV ECU devices and is working to realize a carbon-neutral society.
We have developed a Board to Board Connector connector suitable for in-vehicle environments that contributes to the miniaturization and weight reduction of devices.

It shows good data for various S-parameter thresholds, and the characteristic impedance is adjusted to comply with various transmission standards.






It has also been adopted and used for high-speed transmission applications of 25Gbps* for board-to-board connections within 5G wireless base stations.
*When measured according to the "OIF CEI-28G-SR" standard

※Resource: OIF Forum CEI-28G-VSR




Assuming misalignment within the allowable Floating structure range, we intentionally apply stress at maximum Floating structure to verify the occurrence of soldering cracks. We also observe cross sections and resistance fluctuations during the test to confirm the condition of soldering parts.




*Content may be changed without notice due to improvements, etc.
We can introduce you to the most suitable product depending on your application, so please contact us if you are considering it.